Archives April 2023

n–Pentane belongs to the fourth generation of hydrocarbon foaming agent, and is currently the best substitute product for chlorofluorocarbon foaming agent (141b). With the advantages of energy saving, environmental protection and high performance, it is widely used in cold storage insulation panels, Animal husbandry and fungus breeding plates, refrigerated vehicle insulation materials, pipeline insulation materials and other fields.

n-Pentane (n-Pentane) chemical formula C₅H₁₂, the fifth member of alkanes. There are 2 isomers of n-pentane: isopentane (boiling point 28°C) and neopentane (boiling point 10°C), the term “pentane” usually refers to n-pentane, its linear isomer.

Uses of n-Pentane: 1. Used as a low boiling point solvent, foaming agent in plastic industry, also used with 2-methylbutane as automobile and aircraft fuel, artificial ice, anesthetic, and synthesis of amyl alcohol and isopentane.

SINOPETROCHEM reported on April 19th that the EXW quotation for pentane foaming agents (with a total pentane content >99%) in the Chinese market is CNY 7,350/MT, and production and sales are normal.

April 19, 2023 USD TO CNY TODAY

Actual USD to CNY exchange rate equal to 6.8750 Chinese Yuans per 1 Dollar.

Pentane is colourless with a very low odour and high volatility thanks to its low, narrow boiling range – it is among the lowest boiling hydrocarbon liquids and so evaporates at a very high rate. It is used principally as a blowing agent in foam production, as a propellant in aerosols and as reaction media for polymerisation processes.

Isopentane, Cyclopentane and Normal Pantene Blend Market Growth and Share Research 2023 | by Industry Types [Pentane 85/15, Pentane 80/20], and Applications [EPS Blowing Agent, Electronic Cleaning ,Chemical Solvent], Global Cyclopentane, Isopentane and Normalpentane Blend key players include Shell, Phillips 66, Junyuan Petroleum Group, ExxonMobil Chemical, TOP Solvent, etc.

China is the largest market, with a share over 30Percent, followed by Europe and North America, both have a share about 50Percent.
In terms of product, Pentane 60/40 is the largest segment, with a share over 30Percent. And in terms of application, the largest application is EPS Blowing Agent
, followed by Chemical Solvent, Electronic Cleaning, etc.

Cyclo-isopentane polyurethane foam insulation meets EU ROHS directive for a green and safe environment. Optimized hydrocarbon refrigeration system. As a blowing agent, cyclo- pentane has been confirmed as a long-term alternative to. R11. The mixture of isopentane and pentane was also.

Junyuan Petroleum Group is one of the largest n-Pentane, Isopentane and Cyclopentane manufacturers in China and your partner for tailor-made n-Pentane, iso-Pentane, Cyclopentane and blends.

The recent price trend chart of food grade n-hexane in the Chinese market, in RMB yuan/ton. • 2023/04/19

Hexane is a solvent used extensively in the food industry for the extraction of various products such as vegetable oils, fats, flavours.

Food grade Hexane is mainly used as a solvent in various kinds of extraction operations. The formula for n- Hexane is CH3(CH2)4CH3. This Kenya Standard specifies requirements and methods of test for hexane, food grade, used as a solvent for extraction of oily /oleaginous materials.

Common Uses For Pharmaceutical Grade Hexane

Pharmaceutical grade hexane is a high purity grade of hexane also referred to as food-grade hexane that is available in purity levels as high as 99% with very minimal impurities.

FG Hexane is produced in the refineries from special cut Naphtha where the Hexane rich stream is extracted and purified to meet the required specification.

The price of n-Pentane in Chinese market today, CNY/MT, is for reference only, and the final transaction price shall prevail.

General description. Pentane, a linear aliphatic hydrocarbon, is one of the main constituents of light straight-run (LSR) gasoline fraction in crude oils. Its isomerization can improve the octane number of gasoline.

n-Pentane is a volatile, isomeric, organic compound consisting of an alkane with five carbon atoms. Available in various quantities, purities, and reagent grades, it is an evaporable, nonpolar solvent used in liquid chromatography and industrial applications.

However, the name Pentane can sometimes refer to the two branched-form isomers of C5H12, which are methylbutane (isopentane) and dimethylpropane (neopentane). Unsurprisingly, Pentane exhibits similar chemical properties to the neighboring alkanes.

Are you looking for Pentane manufacturers in China? Find where to buy Pentane products from suppliers in China, including: distributors, industrial manufacturers in China, bulk supplies and wholesalers of n-Pentane, Isopentane, Cyclopentane and Pentane Blends. Search for Pentane products or transportation services, visit our website.

Pentane | C5H12 | – structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more.

Pentane. CH3(CH2)3CH3. Synonyms: . CAS 109-66-0. Molecular Weight 72.15. Browse Pentane and related products at Junyuan Petroleum.

What are the different types of pentane?

Based on type, the market is classified into n-pentane, isopentane, and Cyclopentane. n-Pentane generated the maximum revenue in 2022, and is expected to remain dominant throughout the analysis period, as it is widely used in various personal care and industrial aerosol products as an aerosol propellant.

n-Pentane

SINOPETROCHEM reported on April 17: The price of isopentane (purity>95, water<20ppm, sulfur<1ppm, acid value<2ppm) is stable in the Chinese market, and it is mainly used in polyethylene plants and LNG fields.

Product Name: Cyclopentane, 95%

CAS: 287-92-3

IUPAC Name: cyclopentane

Molecular Formula:C5H10

InChI Key: RGSFGYAAUTVSQA-UHFFFAOYSA-N

SMILES:C1CCCC1

Molecular Weight (g/mol):70.14

Synonym: cyclopentane pentamethylene zyklopentan ciclopentano hsdb 62

Refractive Index: 1.4030-1.4090 @ 20C

Appearance (Color): Clear colorless

Form: Liquid

Assay (GC): ≥95.0%

Identification (FTIR): Conforms

Description

Cyclopentane is the lightest non-polar cycloalkane solvent used by the chemical industry. Its cyclical structure provides a higher solubility coefficient than branched or linear hydrocarbons, while its low molecular weight results in one of the lowest heat of vaporization values a among non-aromatic hydrocarbon solvents.

Features

• High solubility coefficient

• non polar

• low heat vaporization

Cyclopentane is used as green blowing agent and involved in the production of polyurethane insulating foam, which is used in refrigerators, freezers, water heaters, construction panels, insulated pipes and roofs. As a lubricant, it finds applications in computer hard drives and outer space equipment due to its low volatile nature. It is widely useful in the preparation of resin, adhesives and pharmaceutical intermediate. It is an additive in gasoline. Since it is a halogen free compound and has zero-ozone depletion potential, it replaces the conventionally used chloro fluoro carbon (CFC) in refrigeration and thermal insulation.

Applications

Cyclopentane is used as green blowing agent and involved in the production of polyurethane insulating foam, which is used in refrigerators, freezers, water heaters, construction panels, insulated pipes and roofs. As a lubricant, it finds applications in computer hard drives and outer space equipment due to its low volatile nature. It is widely useful in the preparation of resin, adhesives and pharmaceutical intermediate. It is an additive in gasoline. Since it is a halogen free compound and has zero-ozone depletion potential, it replaces the conventionally used chloro fluoro carbon (CFC) in refrigeration and thermal insulation.

Solubility

Miscible with ethanol, ether and acetone. Slightly miscible with water.

Notes

Avoid heat, direct sunlight, flames and sparks. Incompatible with strong oxidizing agents.

RUO – Research Use Only

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Isopentane for analysis
2-Methylbutane, Isopentane
Minimum assay (G.C.): 99.5%
CODE: JY2304160029
CAS: 78-78-4
MOLECULAR FORMULA: C5H12
MOLAR MASS: 72.15 g/mol
SPECIFICATIONS:
Minimum assay (G.C.): 99.5%
Identity: IR passes test
Density 20/4: 0.618-0.622
UN: 1265
CLASS/PG: 3/I
STORAGE: Room Temperature.
SIGNAL WORD: Danger
MASTER NAME: Isopentane
SYNONYMS LONG TEXT: 2-Methylbutane, Isopentane
EINECS: 201-142-8
HS CODE: 29011000
Uses: Isopentane is used in a closed loop in geothermal power production to drive turbines. Isopentane is used, in conjunction with dry ice or liquid nitrogen, to freeze tissues for cryosectioning in histology. Like all alkanes (paraffins, saturated hydrocarbons), iso-Pentane is a very good solvent for non-polar substances such as lubricating greases. Isopentane is a chemical compound that is a branched chain formed by saturated hydrocarbon. This branched chain of hydrocarbons contains an alkane group with five carbon atoms. Isopentane has been widely used in varied industries based on its chemical composition upper hand and the presence of the hydrocarbon group.
Isopentane is used as a blowing agent for polyurethane foam additive and also EPS additive during the manufacturing of plastics. Isopentane also acts as a bleeding agent which further opens the door for wide product offerings for its global existence. The swelling functional outlook of the isopentane shall open wide avenues in such business.

FAQs
Where to buy Isopentane?
Junyuan Petroleum Group offers pentane in a variety of purities and concentrations. Visit JunyuanPetroleumGroup.com and download the MSDS for more information on buying pentane in ISO tanks and steel drums from Junyuan Petroleum Group.
What is the CAS number of Isopentane?
The CAS number of Isopentane is 78-78-4. 2-methylbutane (aka methylbutane or isopentane) is a hydrophobic liquid with a boiling point at just 28°C.
CAS Isopentane?
The CAS number of Isopentane is 78-78-4.
CAS 78-78-4?
The CAS number 78-78-4 is assigned to Isopentane.

AI. Blah blah blah. You can’t turn on the news without hearing about it constantly. So I decided to see if it knew chemistry. With a few exceptions, it did very well. Even when I tried to trick it.

AI or Aluminum?

When it comes to chemistry, how does AI perform? The best way to find out is to ask questions, but I threw some doozies in there to see if it could handle odd or trick questions. Bottom line: It did very well, with some notable exceptions.

1. Basic Chemistry.

I expected it to do very well here, but it really bombed on one question. Let’s start with the easiest.

Q: What is the boiling point of toluene?

A: The boiling point of toluene is approximately 110.6 degrees Celsius or 231.1 degrees Fahrenheit at standard atmospheric pressure

Grade: A. It also knew that the boiling point is dependent upon atmospheric pressure.

Q: How many isomers have the chemical formula C₅H₁₂?

A: There are three structural isomers with the chemical formula C5H12… They are Pentane,  Isopentane, and Neopentane

Grade: A. Perfect

[Time for a trick]

Q: How many isomers are there with the formula C₄H₁₄

A: There are two structural isomers with the chemical formula C4H14. They are: Butane and isobutane.

Grade: F. Uh oh. There are no chemicals in the universe with that formula. ChatGPT’s answer is even worse when you consider that butane and isobutane both have the formula C₄H₁₀. I don’t know how it screwed this up. It should have been trivial.

Q: Which is more acidic? Acetic acid or benzoic acid?

A: The pKa values (a measure of acidity) for benzoic acid and acetic acid are 4.20 and 4.76, respectively. This means that at the same concentration, benzoic acid is more acidic than acetic acid.

Grade: A

[Time for another trick!]

Q: Which is more acidic, butyric acid or butanoic acid?

A: Butyric acid and butanoic acid are two names for the same compound.

Grade: Bravo! A. It didn’t bite.

Q: What is dimethylmercury?

A: Dimethylmercury is an extremely toxic and dangerous substance. It is a colorless liquid that can easily pass through latex gloves and skin, making it highly toxic even in small amounts. Due to its extreme toxicity, dimethylmercury is considered one of the most dangerous chemicals known to mankind

Grade: A (I think it quoted me, so let’s make that A+)

2. Somewhat off-beat chemistry

I wanted to test its ability to answer odd or stupid questions here.

Q: Should I eat potassium?

A: While potassium is an essential nutrient for the human body, it is not recommended to eat pure potassium metal. Potassium metal is highly reactive and can react violently with water or moisture, potentially causing burns or explosions.

Grade: A+. I wanted to see if it could distinguish between potassium metal and potassium salt since they are both called potassium. It did. I like the “it is not recommended” – a mastery of understatement. Potassium metal will blow your head off.

Q: How do you pronounce phenol?

A: The pronunciation of phenol is “fee-nawl” or “fee-nol,” with the stress on the first syllable.

Grade: C. I knew it! That is how doctors pronounce the word. Chemists, who know better (and discovered it), pronounce it with the accent on the second syllable. When a chemist uses the doctor’s pronunciation, it is socially acceptable to throw potassium at them.

More controversial stuff

I needed to ask it a few ACSH-like questions just to see.

Q: Is aspartame bad for you?

A: Aspartame is an artificial sweetener used in food and drinks since the 1980s. It is composed of two amino acids, phenylalanine and aspartic acid, and a small amount of methanol. The safety of aspartame has been studied extensively by regulatory agencies, and it is generally considered safe for human consumption in normal amounts.

Grade: A+. No nonsense from EWG, Joe Mercola, or Oz.

Q: Do vaccines cause autism?

A:There is no scientific evidence to support the claim that vaccines cause autism. The overwhelming majority of scientific studies conducted over the past two decades have found no evidence of a causal link between vaccines and autism…The idea that vaccines cause autism originated from a now-debunked study published in 1998 that has since been retracted due to serious flaws and ethical violations. Numerous subsequent studies have failed to find any evidence to support the claims made in the original study.

Grade: A+. Whew! I was a little worried there

Q: Is Andrew Wakefield a fraud?

A: Andrew Wakefield is a former British medical researcher who became infamous for publishing a fraudulent study in 1998 claiming a link between the measles, mumps, and rubella (MMR) vaccine and autism. The study has since been thoroughly discredited and retracted by the journal that initially published it. Wakefield has been stripped of his medical license due to ethical violations related to the study.

Grade: A+. Excellent. No conspiracy nonsense.

And finally…

Q: Is homeopathy real science?

A: The scientific community generally does not consider homeopathy a legitimate form of science…the principles of homeopathy are not supported by scientific evidence, and numerous studies have failed to demonstrate its efficacy beyond that of a placebo. Homeopathic remedies are often heavily diluted to the point where they contain little to no active ingredient and no plausible scientific mechanism by which they could work.

Grade: A+. I couldn’t have said it better.

Bottom line

My first experience with ChatGPT was much better than I expected. It answered straightforward science questions perfectly (except for that abomination about isomers of C4H14) and was also able to handle strange and tricky questions quite well. It did especially well with controversial questions, such as the vaccine-autism myth, and even opined that Andrew Wakefield, the perpetrator of the myth, was indeed a fraud. Likewise, it didn’t go down the rabbit hole and give wishy-washy answers about aspartame or homeopathy. This is what I found to be most impressive.

In the end, I couldn’t resist:

Q: Will I get a raise from the American Council on Science and Health?

A: As an AI language model, I don’t have access to information about your personal circumstances or any specific information about your job performance, so I cannot predict with certainty whether you will receive a raise from the American Council on Science and Health.

That’s odd. We can all predict that one.

By Josh Bloom

Director of Chemical and Pharmaceutical Science

Dr. Josh Bloom, the Director of Chemical and Pharmaceutical Science, comes from the world of drug discovery, where he did research for more than 20 years. He holds a Ph.D. in chemistry.

About Junyuan Petroleum Group
Junyuan Petroleum Group engages in the production of specialty hydrocarbon products. It operates through the following segments: Specialty Products, Chemical Products and Corporate. The Specialty Products segment produces Pentanes, Hexanes, Heptanes, Butanes and other products.

On March 29, Wang Gang, Secretary of the Party Branch of the Power Supply Center of the Yellow Triangle Rural High District of the State Grid, and his party visited Junyuan Petroleum Group of Companies for investigation and guidance. The group company chairman Miao Guangfa, general manager Qi Chunxiao, and general office manager Chen Huimin accompanied the investigation.

Many manufacturers will be using a new, more environmentally friendly insulation material, called cyclopentane, in the manufacture of select refrigerators and freezers. Cyclopentane is a blowing agent for the polyurethane foams that are used to insulate refrigerators and freezers. Unlike some other chemicals used to insulate refrigerators, cyclopentane does not contain hydro-fluorocarbons (HFCs). Using cyclopentane results in significant reductions in equivalent CO₂ emissions. The most common foam-blowing agents currently used in the U.S. are R134a and R245fa. These industry-standard insulations can have a global warming potential (GWP) as high as 1300 (134a) and 950 (245a). In contrast, the foam-blowing agent cyclopentane has a GWP of approximately 10. When it comes to GWPs, the lower the number is, the better it is for the environment, so cyclopentane is clearly the more environmentally friendly choice. Cyclopentane increases the efficiency of the insulation foam by approximately 4 percent over the R134a foam currently used in most refrigeration products. Cyclopentane has been very popular as a blowing agent in Europe since the early 1990s, but the cost of retrofitting existing production facilities and the lack of U.S. regulations restricting the use of HFCs has delayed implementation in the U.S. However, there are other manufacturers currently selling refrigerators in the U.S. that use cyclopentane. Compared to other insulating foams, cyclopentane is competitively priced and relatively easy to produce. Like many gases, in its pure form, cyclopentane is a highly evaporative and flammable material. However once foamed, the unit is no more hazardous than a unit foamed with other blowing agents. As with any of our manufacturing processes, we’ve integrated a wide variety of redundant engineering and operational safeguards. To learn more about cyclopentane, click here.

 Common questions about cyclopentane

Q: What is this new material being used in the foam insulation?
A: The new material is called cyclopentane, a highly evaporative gas that is used to apply the foam insulations in refrigeration units. 

Q: What is cyclopentane?
A: Cyclopentane is a blowing agent for the polyurethane foams that are used to insulate refrigerators and freezers. 

Q: What are the benefits of using cyclopentane instead of other materials?
A: From an environmental perspective, unlike some other chemicals used to insulate refrigerators, cyclopentane does not contain hydro-fluorocarbons (HFCs). Using cyclopentane results in significant reductions in equivalent CO₂ emissions. 

Q: What foam-blowing agents are most commonly used in the U.S.? How is cyclopentane different?
A: The most common foam-blowing agents in the U.S. right now are R134a and R245fa. These two industry-standard insulations can have a global warming potential (GWP) as high as 1300 (134a) and 950 (245a). Comparatively, the foam-blowing agent cyclopentane has a GWP of approximately 10. When it comes to GWPs, the lower the number is, the less adverse impact on the environment, so cyclopentane is clearly a better choice. 

Q: Are there significant insulating advantages, as well?
A: Yes, cyclopentane is approximately 4 percent more efficient than the R134a foam we currently use in most of our products. 

Q: Do other refrigerators available in the U.S. market use cyclopentane?
A: There are other manufacturers currently selling refrigerators in the U.S. that use cyclopentane. 

Q: Why hasn’t cyclopentane caught on in the United States?
A: It has been very popular as a blowing agent in Europe since the early 1990s, but the cost of retrofitting existing production facilities and the lack of U.S. regulations restricting the use of HFC’s has delayed implementation in the U.S. 

Q: Is it more expensive than other insulating materials?
A: It is competitively priced and relatively easy to produce. 

Q: Is it dangerous?
A: Like many gases, in its pure form, cyclopentane is a highly evaporative and flammable material. However once foamed, the unit is no more hazardous than a unit foamed with other blowing agents. As with any of our manufacturing processes, we’ve integrated a wide variety of redundant engineering and operational safeguards.