Tag Hexane

Abstract: Hydrocarbons are organic compounds that are widely used as fuels, solvents, and raw materials. In this article, we will explain how to calculate how much hydrocarbon you can fit in a 200-liter steel drum, using four examples: n-pentane, n-heptane, cyclopentane, and isohexane. We will use their densities and a safety filling factor of 95% to account for possible expansion or contraction due to temperature or pressure changes.

Keywords: hydrocarbons, density, net weight, safety filling factor, steel drum

Text:

Hydrocarbons are organic compounds that consist of only carbon and hydrogen atoms. They have different shapes and sizes, which affect their physical and chemical properties. Some hydrocarbons are straight chains, such as n-pentane and n-heptane. Some are rings, such as cyclopentane. Some have branches, such as isohexane. These hydrocarbons are widely used as fuels, solvents, and raw materials for various industries.

But how much hydrocarbon can you fit in a 200-liter steel drum? This is an important question for storing and transporting hydrocarbons safely and efficiently. To answer this question, we need to know two things: the density and the safety filling factor of the hydrocarbon.

The density of a substance is the mass per unit volume. It is usually expressed in grams per milliliter (g/mL) or kilograms per liter (kg/L). The density of a hydrocarbon depends on its molecular structure, temperature, and pressure. For this article, we will use the density values at 20°C and 1 atm, which are available from various sources¹²³⁴.

The safety filling factor is the percentage of the drum volume that can be safely filled with the hydrocarbon. We cannot fill the drum completely, because the hydrocarbon may expand or contract due to temperature or pressure changes. This could cause the drum to leak or burst, which could be dangerous and wasteful. Therefore, we need to leave some empty space in the drum to allow for possible expansion or contraction. For this article, we will use a safety filling factor of 95%, which means that we will fill the drum with 95% of its volume.

The net weight of a hydrocarbon in a drum is the mass of the hydrocarbon that fills the drum. To calculate the net weight, we need to multiply the volume of the drum by the density of the hydrocarbon and by the safety filling factor. The formula is:

$$W = V \times D \times F$$

where W is the net weight in kilograms (kg), V is the volume of the drum in liters (L), D is the density of the hydrocarbon in kilograms per liter (kg/L), and F is the safety filling factor as a decimal number (0.95).

The volume of a drum is the space that it occupies. It is usually expressed in liters (L) or cubic meters (m^3^). The volume of a drum depends on its shape and size. For this article, we will assume that the drum is cylindrical, with a height of 0.9 m and a diameter of 0.6 m. The volume of a cylindrical drum can be calculated by multiplying the area of the base by the height. The area of the base is the area of a circle, which can be calculated by multiplying pi (π) by the square of the radius. The radius is half of the diameter. Therefore, the volume of the drum is:

$$V = \pi r^2 h$$

$$V = \pi (0.3)^2 (0.9)$$

$$V = 0.254 m^3$$

$$V = 254 L$$

Now, we can calculate the net weight of each hydrocarbon in the drum, using the formula and the density values from the sources. The results are:

• The net weight of n-pentane in the drum is:

$$W = 254 \times 0.626 \times 0.95$$

$$W = 150.7 kg$$

• The net weight of n-heptane in the drum is:

$$W = 254 \times 0.679 \times 0.95$$

$$W = 164.1 kg$$

• The net weight of cyclopentane in the drum is:

$$W = 254 \times 0.746 \times 0.95$$

$$W = 180.1 kg$$

• The net weight of isohexane in the drum is:

$$W = 254 \times 0.659 \times 0.95$$

$$W = 159.1 kg$$

In conclusion, we have explained how to calculate how much hydrocarbon you can fit in a 200-liter steel drum, using four examples: n-pentane, n-heptane, cyclopentane, and isohexane. We have used their densities and a safety filling factor of 95% to account for possible expansion or contraction due to temperature or pressure changes. This article can help us understand how to store and transport hydrocarbons safely and efficiently.

Hexane is a colorless, flammable liquid that is widely used in organic synthesis, solvents, and fuels. It has the chemical formula C6H14, and it belongs to the class of alkanes, which are saturated hydrocarbons with single bonds between carbon atoms. Hexane has five structural isomers, which are molecules that have the same molecular formula but different arrangements of atoms. These are:

• n-Hexane: The straight-chain isomer, where all six carbon atoms are connected in a single chain. This is the most common form of hexane, and it is also the most toxic and volatile. It can cause nerve damage and respiratory problems if inhaled or absorbed through the skin.
• 2-Methylpentane: The branched-chain isomer, where one of the carbon atoms is attached to three other carbon atoms, forming a branch. This isomer has slightly lower boiling and melting points than n-hexane, and it is less toxic and volatile.
• 3-Methylpentane: Another branched-chain isomer, where the branch is located at the third carbon atom from one end of the chain. This isomer has similar properties to 2-methylpentane, but it is slightly more symmetrical.
• 2,2-Dimethylbutane: The most branched isomer, where two of the carbon atoms are attached to four other carbon atoms, forming two branches. This isomer has the lowest boiling and melting points of all hexane isomers, and it is also the least toxic and volatile.
• 2,3-Dimethylbutane: The least symmetrical isomer, where the two branches are located at different positions on the chain. This isomer has intermediate properties between 2,2-dimethylbutane and 3-methylpentane.

Hexane is usually obtained from the fractional distillation of crude oil, where it is separated from other hydrocarbons based on their boiling points. Hexane can also be produced from the hydrogenation of benzene, which is a cyclic hydrocarbon with six carbon atoms and six double bonds.

Hexane has many applications in various industries, such as:

• Solvent: Hexane is a good solvent for dissolving fats, oils, waxes, and other non-polar substances. It is widely used in the extraction of vegetable oils from seeds, such as soybean, sunflower, and rapeseed. It is also used in the production of rubber, adhesives, paints, and varnishes.
• Fuel: Hexane is a component of gasoline, where it helps to increase the octane rating and reduce engine knocking. It is also used as a fuel additive, a fuel for camping stoves, and a propellant for aerosol cans.
• Organic synthesis: Hexane is a starting material for the synthesis of many organic compounds, such as hexanol, hexanoic acid, hexylamine, and cyclohexane. It is also used as a reaction medium, a catalyst carrier, and a purification agent.

Hexane has a CAS number of 110-54-3, which is a unique identifier assigned by the Chemical Abstracts Service (CAS) to every chemical substance. The CAS number consists of three parts: a registry number, a hyphen, and a check digit. The registry number is a sequential number that indicates the order of registration, the hyphen is a separator, and the check digit is a single digit that is calculated from the registry number to ensure its validity. The CAS number helps to avoid confusion and ambiguity among different names, synonyms, and formulas of chemical substances.

Hexane is an important and versatile chemical substance, but it also poses some health and environmental risks. Therefore, it is essential to handle it with care and follow the safety precautions and regulations when using it.

Abstract: N-hexane is a molecule with six carbon atoms and fourteen hydrogen atoms. It is a clear, flammable, and evaporating liquid that belongs to a group of chemicals called alkanes. N-hexane is widely used as a special solvent, which means it can dissolve or separate some substances that are hard to dissolve or separate by other solvents. This article reviews the main applications of n-hexane as a special solvent in the food, pharmaceutical, and printing industries, and discusses the advantages and disadvantages of using n-hexane as an extractant and a cleaning agent. The article also highlights the potential health and environmental risks of n-hexane exposure and suggests some alternative solvents that are safer and greener.

I can help you write a popular science article in English about n-hexane as a special solvent. Here is a possible draft:

N-hexane is a molecule with six carbon atoms and fourteen hydrogen atoms. It is a clear, flammable, and evaporating liquid that belongs to a group of chemicals called alkanes. N-hexane is widely used as a special solvent, which means it can dissolve or separate some substances that are hard to dissolve or separate by other solvents.

One of the main applications of n-hexane as a special solvent is in the food industry. N-hexane can extract vegetable oils from crops such as soybeans, corn, and sunflower. These oils can be used for cooking, frying, or making margarine and biodiesel. N-hexane can also remove unwanted components from food, such as pigments, waxes, and pesticides, which can affect the color, texture, and safety of food.

Another application of n-hexane as a special solvent is in the pharmaceutical industry. N-hexane can extract active ingredients, vitamins, and antioxidants from herbs, flowers, and seeds. These extracts can be used to make drugs and medicines that can treat various diseases and improve health. N-hexane can also purify drugs and medicines by removing impurities and contaminants that can reduce their effectiveness and quality.

A third application of n-hexane as a special solvent is in the printing industry. N-hexane can clean the printing machines and the printing plates by dissolving the ink, grease, and dirt. This can improve the quality and speed of printing and prevent the machines from clogging and breaking down. N-hexane can also be used as a component of some inks that can print on different materials, such as paper, plastic, and metal.

N-hexane has several advantages as a special solvent, such as low cost, high availability, low toxicity, high selectivity, and easy recovery. However, n-hexane also has some challenges and risks, such as flammability, volatility, and environmental impact. Therefore, n-hexane should be used with caution and care, and some alternatives or improvements should be explored for future development.

N-hexane is a versatile and valuable special solvent that has many applications in different fields. By understanding its properties and functions, we can appreciate its role in our daily life and society.

Hexane is an organic compound belonging to the alkane class, mainly used for organic synthesis and solvents. According to the information searched online, the price level of hexane is affected by various factors, such as crude oil prices, supply and demand, regional differences, seasonal changes, etc.

According to the data, the current price level of hexane in different regions of the world is roughly as follows:

Region Price (USD/ton)

Asia 1,200 – 1,300

Europe 1,100 – 1,200

America 1,000 – 1,100

These prices are for reference only and may change at any time. For more information about hexane, please contact us.

Tires are essential parts of vehicles that provide traction, stability, and comfort. But do you know how tires are made and what chemicals are involved in the process? In this article, we will introduce one of the common solvents used in tire production: hexane.

What is hexane?

Hexane (C3H8) is a colorless, volatile, flammable liquid with a pungent odor and toxicity. It is mainly used as a solvent, cleaning agent, disinfectant, and other industrial purposes. Hexane can dissolve paints, resins, and other materials, making it useful for various applications.

How is hexane used in tire production?

Hexane is mainly used as a solvent in tire production, as it can dissolve the materials used for coating the tires, such as rubber, nylon, polyester, etc. By using hexane, the coating efficiency and quality of the tires can be improved, as well as the adhesion and durability of the materials.

What are the hazards of hexane in tire production?

Hexane is also a hazardous chemical that can cause irritation, damage, and pollution to humans and the environment. When using hexane, the following precautions should be taken:

• Wear protective equipment, such as gloves, masks, glasses, etc., to avoid direct contact or inhalation.
• Operate in a well-ventilated area, to avoid inhaling harmful gases.
• Clean the workplace and equipment promptly after use, to avoid leaving residues that can harm humans and the environment.
• Dispose of the waste properly according to the regulations, to avoid leakage or fire.

Conclusion

Hexane is a common solvent used in tire production, but it also has some risks and drawbacks. Therefore, it is important to use it carefully and responsibly, and to seek alternative and safer methods if possible. By doing so, we can ensure the safety and quality of our tires, as well as the health and well-being of ourselves and our planet. 

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.

CAS: 73513-42-5
Molecular Formula: C6H14
Molecular Weight (g/mol): 86.18
MDL Number: MFCD00009406
InChI Key: AFABGHUZZDYHJO-UHFFFAOYSA-NShow Less
Synonym: isohexane, pentane, 2-methyl, 2-methylpentan, 2-methyl pentane, dimethylpropylmethane, 1,1-dimethylbutane, iso-hexane, methyl pentane, unii-49ib0u6mld, 2-methyl-pentaneShow Less
IUPAC Name: 2-methylpentane
SMILES: CCCC(C)C

Specifications
Color: Colorless
UN Number: 1208
Formula Weight: 86.18
Percent Purity: ≥98.0% (GC) and
Quantity: 16MT/ISO Tank container
Physical Form: Clear Liquid at 20°C
Chemical Name or Material: Isohexane (mixture of isomeric branched chain Hexanes)

The price of Isohexane in the Chinese market today 03.06.2023 is CNY 9,000/MT, and the price remains unchanged from the previous day 03.05.2023.

US Dollar to Chinese Yuan Exchange Rate
US Dollar to Chinese Yuan Exchange Rate is at a current level of 6.910, up from 6.865 the previous market day and up from 6.317 one year ago.

CAS: 73513-42-5
Molecular Formula: C6H14
Molecular Weight (g/mol): 86.18
MDL Number: MFCD00009406
InChI Key: AFABGHUZZDYHJO-UHFFFAOYSA-NShow Less
Synonym: isohexane, pentane, 2-methyl, 2-methylpentan, 2-methyl pentane, dimethylpropylmethane, 1,1-dimethylbutane, iso-hexane, methyl pentane, unii-49ib0u6mld, 2-methyl-pentaneShow Less
IUPAC Name: 2-methylpentane
SMILES: CCCC(C)C

Specifications
Color: Colorless
UN Number: 1208
Formula Weight: 86.18
Percent Purity: ≥99.0% (GC)
Quantity: 16MT/ISO Tank container
Physical Form: Clear Liquid at 20°C
Chemical Name or Material: Isohexane (mixture of isomeric branched chain Hexanes)

China Market Trends: As of press time March 06, 2023, the mainstream transaction price of straight run naphtha in Shandong area is CNY 8,188/MT, -28, and the mainstream transaction price of hydrogenated naphtha is CNY 8,268/MT, -82. The international crude oil is fluctuating and finishing, the profit of the reforming unit of the refinery has dropped significantly compared with the previous day 03.05.2023, the market demand is limited, the related gasoline, diesel and gasoline components are operating weakly, and some refineries have cut prices for shipments. Today, the naphtha market in Shandong fell slightly.
March 06, 2023 USD TO CNY TODAY
https://longforecast.com/chinese-yuan-forecast-2017-2018-2019-2020-2021-usd-to-rmb-and-rmb-to-usd
Naphtha is an important raw material for the production of pentane, hexane and heptane series products. If you need to purchase these hydrocarbon end products, please feel free to contact Junyuan Petroleum Group.

Junyuan Petroleum Group is one of the Hexane manufacturers, exporters, producers, and suppliers in China

Hexane is an organic compound, a straight-chain alkane with six carbon atoms, and has the molecular formula C6H14. Hexane is a significant constituent of gasoline. It is a colorless liquid, odorless when pure, and with boiling points of approximately 69 °C (156 °F). It is widely used as a cheap, relatively safe, largely unreactive, and easily evaporated nonpolar solvent.

Hexane is an organic compound with a molecular formula of C6H14. It belongs to linear saturated aliphatic hydrocarbons. It is obtained from crude oil cracking and fractionation. It is a colorless liquid with a faint special odor. It is volatile, almost insoluble in water, and easily soluble in chloroform, ether, and ethanol. Mainly used as a solvent, such as vegetable oil extraction solvent, propylene polymerization solvent, rubber and paint solvent, pigment diluent.

It is used for the extraction of various edible oils such as soybeans, rice bran, cottonseeds, and oils in spices. In addition, the isomerization of n-hexane is one of the important processes for producing high-octane gasoline blending component.

The term hexanes refer to a mixture, composed largely (>60%) of hexane, with varying amounts of the isomeric compounds 2-methyl pentane and 3-methyl pentane, and, possibly, smaller amounts of nonisomeric C5, C6, and C7 (cyclo)alkanes. Hexanes are cheaper than hexane and are often used in large-scale operations not requiring a single isomer (e.g., as cleaning solvent or for chromatography).

Uses

In industry, hexanes are used in the formulation of glues for shoes, leather products, and roofing. They are also used to extract cooking oils (such as canola oil or soy oil) from seeds, for cleansing and degreasing a variety of items, and in textile manufacturing. They are commonly used in food-based soybean oil extraction in the United States, and are potentially present as contaminants in all soy food products in which the technique is used; the lack of regulation by the FDA of this contaminant is a matter of some controversy.

A typical laboratory use of hexanes is to extract oil and grease contaminants from water and soil for analysis. Since hexane cannot be easily deprotonated, it is used in the laboratory for reactions that involve very strong bases, such as the preparation of organolithiums. For example, butyllithiums are typically supplied as a hexane solution.

Hexanes are commonly used in chromatography as a non-polar solvent. Higher alkanes present as impurities in hexanes have similar retention times as the solvent, meaning that fractions containing hexane will also contain these impurities. In preparative chromatography, the concentration of a large volume of hexanes can result in a sample that is appreciably contaminated by alkanes. This may result in a solid compound being obtained as an oil and the alkanes may interfere with the analysis.

Used in solvents, extraction, organic synthesis, cleaning in the electronics industry, as an extractant in the pharmaceutical industry, and also as an extractant for edible vegetable oils.

Mainly used as a solvent, such as vegetable oil extraction solvent, propylene polymerization solvent, rubber and paint solvent, pigment diluent. It is used for the extraction of various edible oils such as soybeans, rice bran, cottonseeds, and other spices. In addition, it is also a high-octane fuel.

Determination of moisture in methanol. UV spectrum analysis. Pesticide residue analysis. High-performance liquid chromatography. Gas chromatographic analysis standard. Biochemical research, protein sequence analysis.

Determine the refractive index of minerals. Organic Synthesis. Replace mercury in thermometers.

Used as analytical reagent and solvent.

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