Archives August 2022

Technical Data Sheet

Isohexane. CAS Number. 107-83-5. Molecular Weight. 86.175. Density. 0.7±0.1 g/cm3. Boiling Point. 59.6±3.0 °C at 760 mmHg.
Name: 2-methylpentane
Signal Word: Danger
Symbol: GHS02, GHS07, GHS08, GHS09

Technical Data Sheet

Product: Isohexane Lot No.: LX07292238 Storage Tank No.: V308
Standard: Q/LYF-2010
Item Specification Test result Test Method
Appearance Clear and colorless passed Visual inspect
Isohexane %   ≥ 99 99.34 GB17608
Distillation Rang(5-95%)℃ 54-64 59-63 GB/T6536
Total sulfur  ppm <1 <1 SH/T 0253
Benzene    ppm <100 3 GC
Water  content  p p m <100 31 UOP 744-86
Density g/m3  20℃   0.655-0.686 0.657 GB/T1884
Bromine index mgBr/100g <50 <10 GB/T 11135
Non-volatile matter g/100ml <1 0.01 GB17602
2-methylpentane  % 60-80 71.41 GC
3-methylpentane  % 10-30 16.63 GC
2,3-dimethylbutane % 1-20 11.2 GC

Physical Properties

Chemical Formula:
  • C6H12
Flash Point: data unavailable
Lower Explosive Limit (LEL): data unavailable
Upper Explosive Limit (UEL): data unavailable
Autoignition Temperature: data unavailable
Melting Point: data unavailable
Vapor Pressure: data unavailable
Vapor Density (Relative to Air): data unavailable
Specific Gravity: data unavailable
Boiling Point: data unavailable
Molecular Weight: data unavailable
Water Solubility: data unavailable
Ionization Energy/Potential: data unavailable
IDLH: data unavailable

Chemical Identifiers

CAS Number UN/NA Number DOT Hazard Label USCG CHRIS Code
  • 27236-46-0
  • 2288
  • Flammable Liquid
none
NIOSH Pocket Guide International Chem Safety Card
none none
NFPA 704
data unavailable
General Description
A colorless liquid. Insoluble in water and less dense than water. Vapors heavier than air. Used as a solvent.

Pentane Blends

Expansion of Expandable Polystyrene (EPS)
Expansion Basics • Heat Is Applied • Beads Expand • Beads Cool • Beads Age
Expansion – Behind the Scenes • Heat Is Applied • Blowing agent(s) vaporizes (28oC iso-pentane, 35oC normal-pentane, 49oC cyclo-pentane) • Blowing agent(s) permeate through the polymer (n-pentane<i-pentane<c-pentane)
Expansion – Behind the Scenes • Beads Expand • Polymer/blowing agent matrix reaches it’s glass transition temperature (Tg) (about 85oC, varies according to Mw & BA type) • Polymer chains become fluid • Internal pressure created by blowing agent vaporization push apart [unfold] polymer chains, creating cells
Expansion – Behind the Scenes
Expansion – Behind the Scenes • Beads Expand (cont.) • Air & steam permeate into the beads • As expansion continues, cell walls become thin and subjection to high heat can cause them to break and rupture
Expansion – Behind the Scenes • Beads Expand (cont.) • Throughout expansion, blowing agent(s) continue(s) to permeate out of the bead at an increasing rate [depending on temperature and thickness of cell walls] (When permeation rate =/> vaporization rate, expansion ceases)
Blowing agents begin to vaporize Polymer/blowing agent matrix reaches its Tg Cell walls begin to rupture Expansion begins after reaching Tg and proceeds rapidly Loss of blowing agent becomes more rapid as temperature increases
Primary Expansion Controls • Temperature • Time
Temperature Affects • Greater the temperature • Softer the polymer • Increased expansion rate • May result in uneven expansion due to inconsistent • pentane content • bead size • cell structure • raw material “carry over” [extreme cases] • Increased permeation rate of blowing agent
Expansion verses Temperature • <100oC • Expansion can be sluggish due to stiff polymer • >120oC • Polymer is too soft, blowing agent loss is too rapid • 110-120oC • Most efficient use of blowing agent, but beads become sensitive to shrinkage and heat • 100-110oC • Best compromise
Steam Quality • Key to Expansion • Consistent utilities are crucial to achieve consistent densities with consistent volatile content
Secondary Expansion Controls • Volume of Expander • Molecular Weight • Blowing Agent • Bead Size
Expander Volume Affects the total heat available to each bead • Things that can change it • Drop/charge weight • Lumps in expander that don’t discharge • Build up on walls or stir blades
Molecular Weight • The lower the molecular weight, • Increased expandability • Increased heat sensitivity • Increased permeation rate of blowing agent • Increased shrinkage • Increased collapse • Structural strength
Blowing Agent • Amount • Higher percentages give greater expandability (to a point) • Too high a percentage causes rapid permeation thus shrinkage, collapse and heat sensitivity
Blowing Agent • Type • The longer the blowing agent stays in the bead, • Increased expandability • Reduced shrinkage rate • Increased prepuff life (from expansion to mold) • Relative retention n-pentane < i-pentane < c-pentane

Blowing Agent • Degree of Distribution (has a direct affect on cell size) • Expandability • Heat sensitivity • Structural strength • R-Factor (insulation properties) • Permeation rate
Poor Distribution of Blowing Agent Blowing Agent Good Distribution of Blowing Agent
Bead Size • The larger the bead, the easier it is to achieve low densities • Less surface area for blowing agent to permeate out of
Expander Equipment • Continuous • Batch • Wet • Dry
Continuous Expanders • Description • Material is fed into the bottom of the expansion chamber where it is subjected to steam under agitation, material expands and as density decreases, material rises to the top and out the exit chute. • Rely on Time & Temperature
Continuous Expanders • Main Controls • Feed rate • Steam pressure (temperature) • Agitation rate • Outlet height • Fresh air introduction (temperature)
Batch Expanders • Description • A pre-weighed quantity of material is dropped (or charged) into the expansion chamber where either the expander walls are jacketed with steam (dry) &/or steam is injected into the chamber (wet). An agitator keeps material moving. Vacuum, purge or water inject may be used to stop the expansion. • Rely on time, temperature &/or volume
Batch Expanders • Main Controls • Steam pressure (temperature) • Volume or height • Time • Charge weight • Vacuum or purge time • Water inject
Density Check • Consistency is the Key • Procedure • Prepuff is overfilled into a known volume (pre-tared) container. The container is vibrated or tapped (vibration is more consistent). A straight edge is used to strike the top level with the canister. The canister is reweighed and the density calculated.
Expansion – Behind the Scenes • Beads Age, a.k.a. Maturing or Stabilizing • Internal moisture [from condensed steam] permeates out of the bead • Air permeates into the bead until internal and external pressures equal • Blowing agent(s) continue(s) to permeate out of the bead (n-pentane>i-pentane>c-pentane)
Why Age Prepuff? • Foam becomes more resilient after it’s stabilized • Internal vacuum makes beads susceptible to deformation • Reduces blowing agent levels • Too high a blowing agent level leads to excessive cool times and heat sensitivity during molding • Dry prepuff • Improves ease of transportation
Volatile Content on Aging
Aging • Key • A consistent environment is important to provide prepuff to mold with a consistent volatile content
Aging Time Controls • Environment • Air flow Time • Temperature Time • Density Time • Bead Size Time • Blowing Agent Type(boiling point & molecular complexity) Time • Polymer Mw Time
Expansion – Troubleshooting • High Density • Insufficient steam pressure/temperature • check traps, valves, accumulator pressure • steam flow restricted Note: by monitoring both steam pressure and steam temperature, you’ll know your steam quality. • Insufficient steam times • Too high a throughput through expander (continuous) gives raw material carry-over • Wet material
Expansion – Troubleshooting • High Density (continued) • Collapsed or over expanded prepuff • Low blowing agent content in raw EPS • Additive problem (block and shape EPS grades) • Increased drop weight • Electric eye level too low
Expansion – Troubleshooting • Low Density • High steam pressure/temperature • Longer steam times • Reduced drop/charge weight • Wet material • Over dried material • High blowing agent content • Surface additives (block & shape grade EPS) • Electric eye level too high
Expansion – Troubleshooting • Density Fluctuations • Inconsistent steam pressure/temperature • Inconsistent steam time • Erratic drop/charge weights • Inconsistent measuring techniques • Inconsistent blowing agent content • High static (affects electric eye)
Expansion – Troubleshooting • Density Fluctuations (continued) • Purge valve sticking • Vacuum problems • Inconsistent water inject volume • Poor additive distribution (block & shape grade EPS)
Expansion – Troubleshooting • Wet Prepuff • Common on expander start up • Wet steam • Purge valve or vacuum not working • Poor air flow through fluid bed dryer • Too much material in the fluid bed dryer
Expansion – Troubleshooting • Bead Collapse • Over-expanded • Excessive steam pressure/temperature • Excessive steam time • Too high an expansion rate • Thermal shock after expansion • Blades too close to walls or bottom of expansion chamber • Wrong additive package (block and shape grade EPS)
Expansion – Troubleshooting • Lumping • Too much moisture (condensate) • Inadequate stirring • Excessive steam pressure/temperature • Anti-lumping agent level too low • Hot spots in expander • Excessive steam time
Expansion – Troubleshooting • Irregular Prepuff (size/appearance) • Poor or irregular steam flow • Hot spots in expander • Insufficient time in expander • Contamination of prepuff in raw EPS (double pass) • Irregular raw EPS

Pentane

Pentane is a colorless, flammable liquid (the first liquid member of the alkanes) that is lighter than water. It has a pleasant odor that can be detected at 900 ppm, and a moderate odor intensity is observed at 5000 ppm. It occurs as two other isomers, including isopentane [(CH3)2CHCH2CH3] and neopentane [C(CH3)4]. Isopentane (2-methylbutane) apparently has physical and physiological characteristics similar to straight-chain pentane. Neopentane (2,2-dimethylpropane) is similar to butane in physical and physiological characteristics. In air, one part per million of C5 pentane is equivalent to 3 mg m−3.

Modifying Processing Characteristics: Blowing Agents

It is expected that the trend towards use of carbon dioxide will continue but, where it is not possible to achieve the necessary properties, flammable organic compounds will be used. Expensive, partially fluorinated HFCs with their relatively high GWP will only be used where non-flammability is essential. Chlorine-containing compounds, however, must be replaced completely.

Pentane presents itself as a possible solution to finding an efficient blowing agent which also meets environmental regulations, and years of experience in using it have shown that processing can be safe, as long as safety devices are fully implemented. Bayer’s PU machinery subsidiary, Hennecke GmbH, has developed a state-of-the-art system that monitors all critical control points along the processing chain, to ensure safe production. Among the features are:


completely encapsulated machinery and units (including in-line blenders, work tank, and high-pressure reaction casting machine), also aerated and fitted with exhaust devices, pentane gas sensors, and other safety devices;


a metering and blending supervisory system (Pentament), also permanently vented to prevent gas build up;


an electronic security system controlling all safety features, which can shut down operations, if necessary;


pentane gas warning sensors monitoring all critical components; and


an independent decentralized control system, alerted to all trouble indicators from primary and secondary sensors and monitors.

The modifications were designed to add safety checks to all critical points, first pinpointing all potential hazards (such as ignition sources, leakage points, and static charging) and then developing integrated safeguards.

Bayer and Apache Products have discovered that, by extrusion mixing of high levels of fillers and/or diluents in a PU formulation, loadings of 10–50% filler by weight can be achieved while maintaining or improving key physical properties. The technology makes it possible to handle high-viscosity dispersions effectively, which may reduce production costs of rigid boardstock. Use of solid fillers, solid combustion modifiers, and hollow fillers was studied, suggesting that the higher cost of hollow fillers can be offset by density reduction in the foam board and increase in compressive strength.

Use of this more environmentally friendly alternative may be facilitated for manufacturers of domestic appliances following the introduction of new safety features in the CycloFlex and LinFlex systems for refrigerator cabinet production. Hennecke Machinery has developed a comprehensive safety system for pentane-based foam production, meeting many of the reservations of US manufacturers of PU board.

The principle of Pentane Blowing Agent Use

Pentane blowing agent use the principle of foaming agent and foaming agent differentiation physical foaming agent. Chemical foaming agent is break down to form gas at high temperature decomposition ( N2, CO2, NH3, etc. ) Organic and inorganic substances. This is usually a exothermic decomposition process and irreversible. Physical foaming agent can be liquid, also can be in normal circumstances have vaporized material. The physical foaming agent including aliphatic, hydrocarbons ( Pentane, hexane, decane, etc. ) 。 Chlorine hydrocarbon ( A the methane of cl, methylene chloride, etc. ) 。 Chlorine – Fluorocarbon compounds ( Cross-linked with methane, a fluorine dichlorodifluoromethane, etc. ) CO2, N2, rare gas and air. Regular physical foaming is refers to the the physical foaming agent and resin matrix mixing by changing the conditions in the process of operation; According to the principle of thermodynamic instability that changes the physical foaming agent.Then the process of generating bubbles.

Free first page
THERMOSETTING FOAMS

Non–fluorinated blowing agents.

n–Pentane has been used in European countries, e.g., Germany, as a blowing agent for rigid urethane foams. According to Heiling and co–workers’ test results, it has been concluded that there were no indications of higher risks in the case of a real fire. Specifically, the fear concerning explosive–gas mixtures of pentane and air was not confirmed. Explosion–proof dispensing machines have been developed by some companies. Cyclopentane can also be used as a physical blowing agent.

Recently n–pentane–based blowing agents of a blend type have been patented. This patent claims the use of a blend of liquid hydrocarbon and chlorinated hydrocarbon, e.g., a blend of n–pentane and methylene chloride. This method is a convenient way to produce various rigid foams, e.g., polyurethane foams, polyisocyanurate foams, and polyoxazolidone foams. Methylene chloride and pentane have nearly equal boiling points and their blends act like a single solvent. The use of methylene chloride alone results in foam collapse, but a blend of the two solvents does not result in such collapse. A blend of 80/20–90/10 wt % of methylene chloride/pentane is substantially non–combustible, and can be used as the blowing agent for polyisocyanurate–based foams. For rigid polyurethane foams, a blend of about 50/50 wt % is suitable. These blends could solve the disadvantages of 100% water–blown rigid foams mentioned above.

What will be the next generation of blowing agents? Decaire et al. list the requirements for alternative blowing agents as follows: zero ozone depletion potential (ODP), non–flammable or moderately flammable, 50°C boiling point upper limit, and molecular weight below 180. In addition, the cost ($/mole) of a blowing agent is another important industrial factor.

The use of some azeotropic mixtures as blowing agents for rigid urethane foams have been proposed by Doerge. These blowing agents include CFC–11/methyl formate (238), and HCFC–141b/2–methyl butane. Ashida et al disclosed halogen–free azeotropes.

2–Chloropropane as blowing agent for rigid urethane foams has been developed by Recticel.

Mixed gas/liquid blowing agents for rigid urethane foams have also been proposed. The patent claims the use of hydrocarbons having boiling points (a) less than 10°C or (b) 20–30°C, or (c) an inert organic liquid having a boiling point of 35–125°C. Another mixed blowing agent for rigid urethane foams was proposed by a patent which claims the use of a mixture of cycloalkanes, e.g., cyclopentane and cyclohexane, and, if necessary, water The non–fluorinated blowing agents described above can also be applied to polyisocyanurate foams, polyoxazolidone foams, polyurea foams, etc.

Methylene chloride has been used as an auxiliary blowing agent for a long period of time. In some countries, however, due to possible occupational and environmental problems, increased restrictions have been placed on the use of methylene chloride. Therefore, other types of auxiliary blowing agents have been proposed.

Liquefied carbon dioxide is proposed as an auxiliary blowing agent for water–blown flexible urethane foams. Hydrocarbons having a boiling point of 38–100°C are proposed for use in self–skin foam production. Blends of hydrocarbons having a boiling point above −50°C and below 100°C have been proposed as auxiliary blowing agents for water–blown flexible foams.

n-Heptane for Synthesis

n-Heptane for Synthesis

Normal Heptane , Heptyl hydride

Product Size 137kg/drum, 16MT/ISO Tank
Grade Extra Pure
Purity 99% CAS No. 142-82-5
Molecular Formula C7H16 Molecular Weight 100.21
H.S. Code 29011000 Shelf Life 60 months


Specifications

Minimum Assay 99.0%
Wt. per ml at 20°C 0.680-0.685g
Refractive Index 1.3880-1.3885

CERTIFICATE OF ANALYSIS
Name of the Sample : n – Heptane for Synthesis
Batch No. : 33989563
Date of Mfg : July 2022
Date of Exp : July 2025
Register No. : 2021-22
Qty of Sample : 500ml
Date of Analysis : July 2022
S. No Test Parameters, Observed Values, Standard Values
1. Description, Passes, A clear colorless liquid
2. Assay (GC area %), 99.35%, Min.99.0%
3. Wt. per ml at 20°C, 0.683gm, 0.680-0.685g
4. Refractive Index, 1.387, 1.387-1.388 (20°C; 589 nm)


Oil Production by Hexane Solvent Extraction

Oil Production by Hexane Solvent Extraction

Solvent extraction consists of a sequence of four operations:
(1) physical removal of oil from the seed in the extractor;
(2) desolventizing-toasting of the de-oiled seeds, often combined with drying and cooling of the meal;
(3) distillation to remove the solvent from the extracted oil;
(4) recovery of the solvent, for reuse in the extractor. The solvent is almost always hexane, which satisfies the technical, economical, and operational needs of all oil millers. Several other solvents have been studied but their disadvantages are such that they cannot compete with hexane, which has many compensatory advantages despite being flammable (Dijkstra and Segers 2007).

The industry generally makes a distinction between two types of extractor: percolation type and immersion type. The percolation process, also known as the continuous extraction process, is based upon the principle of uninterrupted passage of the solvent through the bed of oleaginous material; the oil is thus dissolved in the solvent and carried away. In the immersion process, the entire load of seeds is immersed in solvent. The system is static, so it needs to be stirred to balance the differences in the oil–solvent concentration. Stirring inevitably causes abrasion of the extraction material, so the mixture needs subsequently to be filtered out. This method is used when it is not easy to extract the oil from the matrix. Oil extractors can also be classified on the basis of other different criteria, such as basket or belt operation, rotary or straight, or other shapes, full or partial countercurrent operation, etc.; however, it must be underlined that today the systems available in the market are becoming more and more similar to each other (Fils 2000). The oil-saturated solvent obtained from the extraction process is referred as “miscella.” All commercial extractors are today based on the principle of countercurrent extraction. Fresh solvent encounters previously extracted material, whereas new seeds, flakes, or collet encounter solvent already containing some oil. This method is able to remove a high level of oil using a little solvent quantity (Anderson 2011). Temperature is one of the key variables to keep under control and to optimize the extraction process. The boiling point of hexane is about 69°C near ambient pressure. However, it becomes an azeotrope in the presence of water or steam, with a boiling temperature of 61.6°C. It would be desirable to operate close to the temperature point of this azeotrope; it is the hottest temperature reachable before hexane evaporation, thus it would allow to obtain the lowest viscosity of both solvent and oil and consequently to promote a rapid oil solubilization (Anderson 2011). The length of the extraction process is determined by several factors that affect the contact time between the solvent and the oleaginous material, required for a best extraction yield. Among these factors, the oil concentration, the viscosity of solvent and oil, the shape and size of solid particles and their resulting specific internal structure after pretreatment, are essential to calculate the residence time of the solvent in the extractor. Simulations reported that the greatest amount of oil is extracted during the first minutes, being the oil less accessible to the solvent in the last phase due to equilibrium phenomena (Anderson 2011).

After oil extraction, the meal contains 25%–35% of solvent, which must be evaporated and recovered for reuse (Nagaraj 2009). On the other hand, the de-oiled meal is toasted to reduce anti-nutritional factors such as glucosinolates or trypsin inhibitors, which act as antigrowth factors in monogastric animals if the meal is incorporated into animal feed. Moreover, the meal should be dried to minimize the risk of biological contamination and cooled close to room temperature to remain flowable during storage and transport. The process known as desolventizing, toasting, drying and cooling process (DTDC), invented by Schumacher (1985), combine all these operations in a single piece of equipment (Kemper 2011). The most widely used equipment today is the vertical stack consisting of a number of chambers separated by trays. The meal enters at the top and is conveyed downward while being mixed by agitating sweeps anchored to a central rotating shaft. The heat needed for increasing meal temperature and evaporating the solvent is supplied by steam, which is directly and indirectly introduced into the meal via the trays. When indirectly heated using a steam jacket, hexane will evaporate and the temperature will not rise above the boiling point of hexane. Moreover, in this way, live steam will not condense on the flakes, thus allowing a control of the moisture level during the next steps. The reduced moisture, however, provides less protection against overheating, which may lead to a significant decline of the nutritional value during toasting. Subsequently, the material is heated with live steam, which will condense and raise the temperature above the boiling point of hexane that will be completely vaporized. Additionally, the condensed steam humidifies the meal to a point where a good toasting is possible. In the next chamber, the desolventized meal is cooled and dried by air. Heated air is passed over the material to dry it, at the same time, outside air is blown through the material to cool it. Furthermore, the hot air, while drying, also cools the material and the cold air, while cooling, also dries the material (Kemper 2011).

The miscella leaves the extractor with a 25%–30% oil content, which is separated from the solvent by evaporation of the latter. The miscella evaporator, also referred to as economizer, utilizes the latent heat contained in the vapors leaving the desolventizer to evaporate the solvent till an oil concentration of 65%–75%. The concentrated miscella may then undergo to a second step of solvent evaporation, which utilizes the sensible heat of the condensate steam coming from the DTDC. The residual hexane is then removed by vacuum stripping. The evaporated solvent must be cooled in a condenser and cleaned into a mineral absorption system before being reused in the extractor (Dijkstra and Segers 2007).

Buying Heptane? Here’s What You Need to Know

What is the Difference Between Heptane and Normal Heptane? What you need to know when buying Normal Heptane and Heptane?

The key difference between Heptane and Normal Heptane is that Heptane is an organic compound having seven carbon atoms arranged in either branched or non-branched structures, whereas Normal Heptane is the non-branched structure of the Heptane molecule.

The chemical formula of Heptane is C7H16. It is mainly useful as a nonpolar solvent. Heptane can dissolve many organic compounds, and it can also act as an extracting solvent.

Also known as normal Heptane, Normal Heptane is a pure form of Heptane and the unbranched structure of the Heptane molecule. It’s a colorless, flammable liquid with a 98.4 degrees boiling point. It’s almost insoluble in water but slightly soluble in alcohol, ether, and chloroform. Normal Heptane is the purest form of Heptane.

What is Heptane?

Heptane compound containing seven carbon atoms bound to each other, forming an alkane. It also contains 16 hydrogen atoms. All these atoms form C-H bonds with carbon atoms. Hence, there are C-C bonds and C-H bonds in this compound.

The chemical formula of Heptane is C7H16. The molar mass of this substance is 100.2 g/mol. It appears as a colourless liquid at room temperature and pressure. Moreover, Heptane has a petrolic odour. It is mainly useful as a nonpolar solvent. Heptane can dissolve many organic compounds and can also act as an extracting solvent.

Heptane can exist in many isomeric forms. This solvent has a major application in distinguishing aqueous bromine from aqueous iodine through the extraction of aqueous bromine into Heptane. Usually, both bromine and iodine appear in a brown colour. But when dissolved in Heptane solvent, iodine gets a purple colour while bromine remains in brown colour.

On a commercial scale, Heptane is available as a mixture of isomers that is used in paints and coatings. It is useful in rubber cement productions such as “Bestine” production, “Power fuel” (an outdoor stove fuel), etc.

What is Normal Heptane?

Normal Heptane is the non-branched structure of the Heptane molecule. The following image shows the chemical structure of Normal Heptane.

There are many isomers and enantiomers of the Heptane molecule because there are seven carbon atoms in this molecule that can arrange in different forms making branched structures and chiral centers. For example, IsoHeptane, NeoHeptane, 3-Methylhexane, etc. What are enantiomers? Enantiomers are a pair of molecules that exist in two forms that are mirror images of one another but cannot be superimposed one upon the other. Enantiomers are in every other respect chemically identical. Enantiomers are in every other respect chemically identical. A pair of enantiomers is distinguished by the direction in which when dissolved in solution they rotate polarized light, either dextro (d or +) or levo (l or -) rotatory; hence the term optical isomers. When two enantiomers are present in equal proportions they are collectively referred to as a racemic mixture, a mixture that does not rotate polarized light because the optical activity of each enantiomer is cancelled by the other.

If you are looking for the right Heptane solvent for your needs, Junyuan Petroleum Group is here to help: info@junyuanpetroleumgroup.com.

What is the Relationship Between Heptane and Normal Heptane?

Generally, we use the term Heptane to refer to all the different isomers of 7-carbon alkane molecule. The chemical structure of the Heptane molecule can differ in various ways depending on the atomic connectivity and branches. If there is a straight chain of 7 carbon atoms without any substitution or any branches attached to the carbon chain (simply, a straight carbon chain of 7 carbon atoms, each carbon bonded to hydrogen atoms to form a saturated molecule), we call it Normal Heptane or Normal Heptane.

What is the Difference Between Heptane and Normal Heptane?

The chemical formula of Heptane is C7H16. It is mainly useful as a nonpolar solvent. Heptane can dissolve many organic compounds and can act as an extracting solvent. The key difference between Heptane and Normal Heptane is that Heptane is an organic compound having seven carbon atoms arranged in either branched or non-branched structures, whereas Normal Heptane is the non-branched structure of Heptane molecule. Moreover, the properties of Heptane can vary depending on the chemical structure, whereas Normal Heptane is a nonpolar, colourless liquid having a petrolic odour.

The following table summarizes the difference between Heptane and Normal Heptane.

Summary – Heptane vs Normal Heptane

The chemical formula of Heptane is C7H16. It is mainly useful as a nonpolar solvent. Heptane can dissolve many organic compounds, and also it can act as an extracting solvent. The key difference between Heptane and Normal Heptane is that Heptane is an organic compound having seven carbon atoms arranged in either branched or non-branched structures, whereas Normal Heptane is the non-branched structure of the Heptane molecule.

Need more information on the difference between Heptane and n-Heptane?

If you need more help understanding the difference between Heptane and n-Heptane, and which solvent is better for your needs or need a quote, contact Junyuan Petroleum Group here! Junyuan Petroleum Group is a trusted manufacturer of high quality, bulk chemicals and solvents, who will work with you to find the best solvent for your particular uses. Call Junyuan Petroleum Group today to learn more!

Reference:
1.”Heptane, Properties, Chemical Reactions.”Sciencealpha, 29 Oct. 2020.

Image Courtesy:
1.”Heptane 3D ball” By Jynto (talk) – Own work – Created with Discovery Studio Visualizer (CC0) via Commons Wikimedia
2. “HeptaneFull” By Walkerma – Own work (CC0) via Commons Wikimedia

Contact

Contact Us

  • Company Name:Dongying Liangxin Petrochemical Technology Development Limited Company
  • Contact person:Sales Team
  • Street Address:117 Guangqin Road, Guangrao County
  • City:Dongying
  • Province/State:Shandong
  • Country/Region:China (Mainland)
  • Zip:257345
  • Business type:Manufacturer
  • Tel:+86 178 1030 0898
  • Web:www.junyuanpetroleumgroup.com
  • Email:info@junyuanpetroleumgroup.com

Credibility

  • Time of verification:2006/1/2 09:00
  • Company Name:Dongying Liangxin Petrochemical Technology Development Limited Company
  • Country/Territory:China (Mainland)
  • Website:https://www.junyuanpetroleumgroup.com
  • Email:info@junyuanpetroleumgroup.com
  • Company Scale:101 – 500 People
  • Registered Capital:20000000
  • Year Established:2006
  • Business Type:Manufacturer
  • Business Scope:Isobutane, Normal Pentane, Isopentane, Normal Hexane, Isohexane, Normal Heptane, n-Octane, Pentane Blend, Blowing Agent, Cyclopentane, Sodium Methoxide Powder, Sodium Methoxide Solution
  • Main Markets:North America     South America     Southeast Asia     Africa     Oceania     Mid East     Eastern Asia     
  • Company Corporate Representative:YANG XIUWEN
  • Business License:
  • Tax Registration Certificate:
  • Organization Code Certificate:
  • Legal person’s id card:

Source : National enterprise credit information enterprise publicity system

https://sd.gsxt.gov.cn/%7BBE746B2CD655CAFE2562AC2FF48948B2F5A0CB1093C6BBF0EF6C96D184142265ABFE83C8D7543F0B2ED4E0C5AE600B88F4334B9C80BD36C9F48C53AC91A256E810BF10BF10AE56F946D36DC26DFE51C451FE6D69C6C65555FAFEFE23FEE5B475E5150FD4A96816D822F997049728BB91FACEEB80D514CFA11FE748E748E7-1660464475806%7D

President and CEO Mr. Miao Guangfa are presiding over the meeting

Chairman and CEO Mr. Guangfa Miao

Mr. Miao Guangfa

Chairman and CEO of Junyuan Petroleum Group

Junyuan Petroleum Group was founded in 2009 with a registered capital of 160million. It is a comprehensive group gradually developed and improved by relying on Dongying Junyuan Petroleum Technology Development Co., Ltd. After 15 years of continuous development and expansion, Junyuan Petroleum Group has five subsidiaries: Dongying Junyuan Petroleum Technology Development Co., Ltd., Dongying Liangxin Petroleum Technology Development Limited Company, Dongying Changyuan Petroleum Technology Development Co., Ltd., Dongying Junyuan Logistics Co., Ltd. and Xinjiang Liangxin Petroleum Technology Development Co., Ltd. in addition, Junyuan environmental protection new material technology development Co., Ltd. is under preparation, The six subsidiaries together constitute a complete oil refining industrial chain of Junyuan Petroleum Group, which includes high-quality and complete products, convenient and efficient logistics, dedicated and dedicated after-sales services. At present, the group’s total assets are 1.5 billion yuan, fixed assets are 1.2 billion yuan, covers an area of nearly 1000 mu, has more than 500 employees, and has an annual output of 500000 tons, with an annual value of more than 3 billion yuan.

The main business scope of Junyuan Petroleum Group covers seven series, including propane butane series, pentane series, hexane series, solvent oil series, aromatics series, environment-friendly D series solvent oil, hydrogenated naphtha series, including propane, isobutane, n-butane, and high clean liquefied gas; Isopentane, n-pentane, cyclopentane, pentane foaming agent; Isohexane and n-Hexane (content 60%, 70%, 80%, 90%, 95%, 99%); 6 solvent oil, 120 solvent oil, 140 solvent oil, 200 solvent oil; Petroleum benzene, toluene, xylene; More than 20 kinds of environmentally friendly solvent oils, such as d30, D40, D60, D80, have become the largest environmentally friendly solvent manufacturer in China, as well as the largest environmentally friendly hydrocarbon refrigerant and pentane foaming agent manufacturer in China, and the first enterprise in China to obtain the production qualification of vegetable oil extraction solvent as a food additive. Junyuan Petroleum Group’s environment-friendly hydrocarbon refrigerant and foaming agent are internationally recognized as the ultimate substitute for Freon. They are petrochemical projects encouraged by the national industrial policy. In 2013, they were listed as “supporting projects for the development of emerging industries and key industries” by Shandong Provincial Commission of economy and information technology.

In the process of development, Junyuan Petroleum Group attaches great importance to independent innovation, continuously increases scientific research investment, and uses new technologies to transform traditional industries, realizing the rapid development of the enterprise. Junyuan Petroleum Group’s products are widely recognized at home and abroad, and the domestic market radiates across the country: the solvent oil and hexane series enhanced products launched by the group use Sinopec and other large refinery raw materials, and the product indicators are stable. After multi-stage hydrofining, they reach the high-grade product indicators. After the launch of the product, it quickly radiated to the northeast, North China, northwest, South China and other regions, with high market recognition and won the unanimous praise of the majority of customers. With high-quality products and good reputation, Junyuan Petroleum Group has passed the national industrial product production license, safety production license, ISO9001 quality management system certification, ISO14001 environmental management system certification and ISO18001 occupational health and safety management system certification, and holds the sales network access license of Sinopec, PetroChina and CNOOC. The products are widely used in many fields such as petrochemicals, medicine, home appliances, rubber, building materials, etc. in the field of home appliances and industrial refrigeration, we have established cooperative relations with domestic refrigeration equipment enterprises such as Zhigao, Gree, Haier, etc. The new series of solvent oil products launched by the group have established cooperative relations with COFCO, Zhongfang, yihaijia and other domestic and foreign enterprises, and are sold at home and abroad. With import and export qualifications, the group has opened up markets in the Middle East, Europe and the United States, and central and South Asia. It has sincerely cooperated with friends at home and abroad to create brilliance, and will build the group into an international and global large-scale enterprise group with sustainable development.

In 2014, the group launched a series of solvent oil and hexane products, using Sinopec and other large refinery raw materials, and the output product indicators are stable and of good quality. The products have been hydrogenated twice to reach the index of superior products. After the launch of the product, it quickly radiated to the northeast, North China, northwest, South China and other regions, with high market recognition and won the unanimous praise of our customers.
In 2013, Junyuan Petroleum Group achieved a total output value of 2.0 million yuan and a warehousing tax of 56 million yuan.

Dongying Junyuan Petroleum Group and its other subsidiaries hold the sales network access certificates of Sinopec, PetroChina and CNOOC, and have established long-term cooperative relations with its subsidiaries such as Tianjin Dacheng, Daqing Dacheng, Dushanzi Petrochemical and Zhenhai Petrochemical. In terms of household appliances and industrial refrigeration, it has established cooperative relations with domestic refrigeration equipment enterprises such as Zhigao, Gree and Haier. The new series of solvent oil products launched by the group have established cooperative relations with COFCO, Zhongfang, yihaijia and other domestic and foreign enterprises, and are sold at home and abroad.

Isopentane Extra Pure

2-Methylbutane, 99%,
– High purity solvents and reagents with low level of impurities, conform to ISO, Pharma, ACS standard
– Suitable for laboratory and special analytical techniques

Synonym: Ethyldimethylmethane, Isoamylhydride, Isopentane, iso-Pentane, 1,1,2-Trimethylethane
Synonyms: iso-Pentane
Formula: CH₃CH₂CH(CH₃)₂
MW: 72.15 g/mol
Boiling Pt: 30 °C (760 mmHg)
Melting Pt: –160 °C
Density: 0.62 g/cm³
Flash Pt: –51 °C
Storage Temperature: Refrigerator
MDL Number: MFCD00009338
CAS Number: 78-78-4
EINECS: 201-142-8
UN: 1265
ADR: 3,I

Compliance & Certification
Our company is certified in several ISO Standards related to Quality, Environment, as well as Health & Safety.
These certifications are part of our commitment to excellence and continuous improvement in quality. They are the foundation for the value we deliver to our customers through every process, program, product and solution we offer. This ensures our management systems, manufacturing processes, services, and documented procedures meet all requirements for global standardization and quality assurance.

Please visit for a full list of all Quality Management System ISO certificates.

ISO 9001
ISO 9001 certification is based on quality management system principles which includes strong customer focus, involvement of top management, standardized approaches and a continual improvement process. This standard is the global standard for quality management systems, ensuring that customers consistently receive quality products and services.

ISO 45001
ISO 45001 specifies requirements for an occupational health and safety (OH&S) management system, and gives guidance for its use, to enable organizations to provide safe and healthy workplaces by preventing work-related injury and ill health, as well as by proactively improving its OH&S performance. Our sites in many countries use this standard as a backbone to support a safe and healthy work environment.

ISO 14001
ISO 14001 specifies the requirements for an environmental management system that an organization can use to enhance its environmental performance. ISO 14001 is intended for use by an organization seeking to manage its environmental responsibilities in a systematic manner that contributes to the environmental pillar of sustainability.

Our company has many initiatives around the world to manage its environmental responsibilities: Examples would be the reduction and recycling of waste or the reduction of water, fuel and energy consumption.

Specification Test Results

Appearance Clear colorless Liquid
Infrared spectrum Conforms
Refractive index 1.3520 to 1.3560 (20 °C, 589 nm)
GC ≥99.0 %
Residue after evaporation ≤10 ppm

Junyuan Petroleum Group donated money to help Heze fight epidemic

Junyuan Petroleum Group donated money to help Heze fight epidemic

The epidemic situation is merciless, but people are sentient and work together to tide over the difficulties. In August, the situation of epidemic prevention and control in Heze City was extremely severe. In order to help Heze City win the sniper battle of epidemic prevention and control, on August 2, Junyuan Petroleum Group, the parent company of Dongying Liangxin Petrochemical Technology Development Limited Company actively supported Heze City and donated 50,000 yuan to the Red Cross Society of Heze City for the prevention and control of COVID-19 epidemic in Caoxian county and Mudan District. It practiced the responsibilities and responsibilities of private enterprises with practical actions, and gathered the positive energy of working together to overcome difficulties.

In recent years, Junyuan Petroleum Group, the parent company of Dongying Liangxin Petrochemical Technology Development Limited Company, has made positive contributions to social welfare undertakings while achieving rapid development. Participated in the educational activities organized by Dongying Civil Affairs Bureau, and donated 100,000 yuan at one time; Participated in the targeted poverty alleviation and Charity Day donation activities in Dingzhuang Town, Guangrao County, and donated 130,000 yuan; In response to the targeted poverty alleviation activities of Guangrao County Charity Federation, donated 200,000 yuan; In the year of COVID-19, the company donated 500000 yuan to Dingzhuang sub district Charity Federation and donated prevention and control materials to surrounding villages and epidemic prevention and control points under the condition that its production and operation were seriously affected.

Next, Junyuan Petroleum Group, Dongying Liangxin Petrochemical Technology Development Limited Company’s parent company, will continue to practice the responsibilities and responsibilities of private enterprises and make positive contributions to social development.

Request a Quote

Request a Quote

for Pentanes, Hexanes, Heptanes, Butanes and more

I will be back soon

Request a Quote
If you would like to receive a quote to purchase a product or you would like more information, please message us on WhatsApp.