Category n-Heptane|CAS No. 142-82-5

FACT SHEET

Heptane, All Isomers

CAS Numbers: n-Heptane: 142-82-5;

Other 8 Isomers

What is heptane?

Heptane is a colorless, volatile, flammable organic liquid with a faint hydrocarbon odor. Heptane is a component of natural gas and crude oil (0.1-1.9%). All isomers of heptane are used as solvents for glues, lacquers and inks, as industrial solvent for extracting natural gas, in organic synthesis, as an anesthetic, and are ingredients of gasoline and petroleum solvents.

How is heptane released into ambient air?

Heptane can be released into the air from its production and use in many products associated with the petroleum and natural gas industries. In addition, the combustion of gasoline is a major mechanism for the release of heptane into the atmosphere. Heptane released to the environment is expected to volatilize to the atmosphere, where it will undergo photochemical oxidation reactions.

How can heptane affect my health?

Heptane has a low order of acute or chronic toxicity. Permitted levels of heptane should not cause adverse health and welfare effects. Inhalation of high concentrations of heptane can cause depression of the central nervous system, mucous membrane and sensory irritation, and neurobehavioral impairment. There are no studies indicating heptane has a potential to be a human carcinogen.

Is heptane odorous or harmful to plants?

Heptane has a gasoline-like odor at moderate levels. Heptane has not been shown to have an adverse effect on plants.

Why does the TCEQ set regulatory guidelines for heptane?

The TCEQ has set various air quality guideline levels (ESLs, AMCVs and ReVs) to protect human health and welfare. Please refer to Definitions of ESLs, ReVs, and AMCVs located on the TCEQ DSD webpage for more information. The air quality guideline levels for heptane have been designed to protect the general public from short-term and long-term adverse health and welfare effects. The general public includes sensitive populations such as children, the elderly, pregnant women and people with preexisting health conditions. If you would like to know more about the specific ESLs, AMCVs and ReVs developed, what the values are and what they are used for, please see the DSD.

Heptane
Heptane anhydrous, 99% CAS Number 142-82-5. Linear Formula CH 3 (CH 2) 5 CH 3. Molecular Weight 100.20 . Beilstein/REAXYS Number 1730763 . EC Number 205-563-8. MDL number MFCD00009544. PubChem Substance ID 57648092
N-Heptane, is used as a non-polar solvent typically during the plant extraction or crystallization process. N-heptane or normal heptane is a pure single molecule product, which functions better for crystallization due to the tighter control of the chemical properties.
n-Heptane is the straight-chain alkane with the chemical formula H3C(CH2)5CH3 or C7H16. When used as a test fuel component in anti-knock test engines, a 100% heptane fuel is the zero point of the octane rating scale (the 100 point is a 100% iso-octane).
Number of Transactions>200
Total Quantity: (kg)14,177,933 kg
Total Value:(USD)$27,346,608

API Imports and Exports for n-Heptane from India

Hexane
N-hexane CAS Number: 110-54-3 Molecular formula: C6H14 IUPAC Name: hexane. Hydrocarbons, C6, isoalkanes, 5% n-hexane . Type: legal entity composition of the substance. Constituent 1. Reference substance name: 2,3-dimethylbutane EC Number: 201-193-6 EC Name: 2,3-dimethylbutane CAS Number: 79-29-8 Molecular formula: C6H14
Hexane is a liquid solvent used in industrial, professional and consumer products such as adhesives and coatings. It can also be used in food contact applications such as a solvent for oil seed extraction. One of the most common applications for hexane is its use as a solvent, specifically as an industrial grade degreaser and cleaner.

Hexane in Solvent extraction method

Hexane in its pure form is a colorless liquid , and its boiling point is between
50℃ – 70℃ all of which work in favor for oil extraction. To begin the process of solvent extraction, oil seeds (soybean, rapeseed etc.) are removed of impurities and dried to reduce moisture content. The next step is to crack the seeds for size reduction, they are then flattened to form flakes which increases the surface area to facilitate easier extraction. In the succeeding step food grade hexane is fed as counter current and the solvent extracts oil from the flakes. Then the solvent is evaporated from the oil solvent mixture and from the defatted flakes by exposing them to steam by direct or indirect method. The solvent is condensed to recover back hexane. The oil which is devoid of the solvent undergoes further processing to achieve commercial quality.

The oil content in the flakes after removes by solvent extraction method is only 1/2% which is far less when compared to other methods of extraction which may range anywhere between 30- 45%.

Extraction of oil from seeds is carried out by three method

• Hydraulic press
• Expeller pressing
• Solvent extraction

The Solvent extraction process scores over the other two methods by the following advantages

• Maximum oil recovery
• Lesser working cost
• Cheaper price tags for end users
• Production meets demand
• The extracted oil is low in sedimentation
• Solvent loss is low

Why hexane for oil extraction and not other solvents?

• Hexane has greater ability to extract oil when compared to other solvent like petroleum ether and ethyl acetate.
• With a boiling point of 69℃ it is able to retain its liquid state at all atmospheric conditions other than for extreme climates.
• Its reasonable volatility aids easy removal from solids and oil, using low energy.
• When compared to other solvents hexane records the lowest skin irritation.
• It aggressively mixes with the vegetable oil and washes it out with out disturbing fiber, protein, sugar and undesired gums.
• It is low in odor and does not cause discomfort during exposures.

Hexane considerably scores over all other solvents and is the universally accepted chemical for solvent extraction. The method by itself uses lesser hp and maintenance is also minimal. The process flow is quiet similar with slight variation depending on the seed that’s involved in extraction. Seeds that are subjected solvent extraction process are rape seed, canola, sunflower, safflower, Soybean etc. Pure Chemicals Co. has 36 years of experience in chemical industry and is one of the largest supplier of hexane for all the big names in edible oil extraction industry that follow solvent extraction process.

Number of Transactions>200
Total Quantity: (kg)357,295,003 kg
Total Value: (USD)$418,591,307

API Imports and Exports for n-Hexane from India

n-Heptane
CAS No.:142-82-5
Article No.:00157
Grade:Extra Pure
Purity: 99%
Molecular Formula: C7H16
H.S. Code:2901.2990
Shelf Life: 60 Months
Packings:1) in 137kg drums, 160 drums/40″GP, 80 drums/20″ GP 2) in Isotank, 16MT/Isotank
Manufacturer: Junyuan Petroleum Group
TDS: TDS for n-Heptane
Phone:+86 178 1030 0898
Email: info@junyuanpetroleumgroup.com
Web: www.junyuanpetroleumgroup.com