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N HEPTANE

CAS NUMBER: 142-82-5

EC NUMBER: 205-563-8

MOLECULAR FORMULA: CH3(CH2)5CH3

MOLECULAR WEIGHT: 100.20

 

N Heptane or n-heptane is the straight-chain alkane with the chemical formula H3C(CH2)5CH3 or C7H16. 
When N Heptane is used as a test fuel component in anti-knock test engines, N Heptane fuel is the zero point of the octane rating scale (the 100 point is 100% iso-octane). 

Octane number equates to the anti-knock qualities of a comparison mixture of heptane and isooctane which is expressed as the percentage of isooctane in heptane and is listed on pumps for gasoline (petrol) dispensed globally.
N Heptane is widely used in laboratories as a non-polar solvent. 

As a liquid, N Heptane is ideal for transport and storage. 
N Heptane is used to dissolve an oil spot to show the previous presence of organic compounds on a stained paper. 

N Heptane is done by shaking the stained paper in a heptane solution for about half a minute.
N Heptane may be distinguished from aqueous iodine by its appearance after extraction into heptane. 

N Heptane turns purple when dissolved in heptane, whereas the bromine solution remains brown.
N Heptane is commercially available as mixed isomers for use in paints and coatings, as the rubber cement solvent "Bestine", the outdoor stove fuel "Powerfuel" by Primus, as pure n-heptane for research and development and pharmaceutical manufacturing and as a minor component of gasoline (petrol).

N Heptane is also used as an adhesive remover by stamp collectors. 
N Heptane-based products like Bestine, as well as limonene-based products, have become popular solvents for removing stamps more easily.

N Heptane is defined as the zero point of the octane rating scale. 
N Heptane is a lighter component in gasoline, burns more explosively, causing engine pre-ignition (knocking) in its pure form, as opposed to octane isomers, which burn more slowly and give less knocking. 

N Heptane was originally chosen as the zero point of the scale because of the availability of very high purity n-heptane, unmixed with other isomers of heptane or other alkanes, distilled from the resin of Jeffrey pine and from the fruit of Pittosporum resiniferum. 
Other sources of N Heptane and octane, produced from crude oil, contain a mixture of different isomers with greatly differing ratings, and do not give as precise a zero point.

N Heptane is a straight-chain alkane with seven carbon atoms. 
N Heptane has been found in Jeffrey pine (Pinus jeffreyi). 

N Heptane has a role as a non-polar solvent and a plant metabolite. 
N Heptane is a volatile organic compound and an alkane.

N Heptane is a clear colorless liquids with a petroleum-like odor. 
N Heptane's Flash point is 25°F. 

N Heptane has less dense than water and insoluble in water. 
N Heptane's Vapors are heavier than air.

N Heptane is a natural product found in Vitis rotundifolia, Pinus sabiniana, and other organisms.
N Heptane is the straight-chain alkane with the chemical formula H3C(CH2)5CH3 or C7H16. 

When N Heptane is 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). 
N Heptane is a chain-like hydrocarbon from the alkane group with the chemical formula C7H16. 

N Heptane is the unbranched representative and technically the most important of the nine heptane isomers.
N Heptane is almost insoluble in water, but shows very good solubility or unlimited miscibility with many organic solvents such as ethanol, ethers, esters, white spirit, benzene or chlorinated hydrocarbons.

N Heptane is a very good solvent for non-polar substances, fats and oils. Especially in the pharmaceutical industry, it is used as an inert solvent, for purification, recrystallization and washing of active pharmaceutical ingredients.
Some synthetic rubbers such as polybutadiene are produced in solution. 

Since N Heptane is chemically inert, N Heptane is an ideal solvent for this sensitive reaction.
Heavy greases or oils can be diluted with parafins such as n-heptane to facilitate application. 

N Heptane is also found as a component in paints, varnishes and adhesives. 
N Heptane has an octane number of 0, which has been defined internationally. 

N Heptane makes high-purity n-heptane (min. 99.75 %) a primary reference fuel for determining the octane number of a gasoline in a specially built engine. 
N Heptane is the straight-chain alkane with the chemical formula H3C(CH2)5CH3 or C7H16. 

When N Heptane is 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). 
N Heptane is widely applied in laboratories as a totally non-polar solvent. 

N Heptane is ideal for transport and storage. 
N Heptane is used to dissolve the oil spot to show the previous presence of organic compounds on a stained paper.

N Heptane is a colorless liquid with a mild, Gasoline-like odor. 
N Heptane is used as an industrial solvent and in petroleum refining processes. 

N Heptane is a colorless liquid that is insoluble in water. 
N Heptane is obtained by fractional distillation of petroleum. 

N Heptane is not only flammable, but also moderately toxic if inhaled. 
N Heptane is used as a solvent, as an anaesthetic and in organic synthesis.

N Heptane is the straight-chain alkane with the chemical formula H3C(CH2)5CH3 or C7H16, and is one of the main components of gasoline.
The industrial grade N Heptane can be purified by a method such as concentrated sulfuric acid washing and methanol azeotropic distillation.

N Heptane is used as analytical reagents, gasoline knock test standards, chromatographic analysis of reference substances, solvents. 
N Heptane can be used as a standard for the determination of octane number, and can also be used as a solvent, a solvent and a raw material for organic synthesis.

N Heptane is a straight-chain alkane with chemical formula C7H16. 
N Heptane appears as a clear colorless liquid with a petroleum-like odor. 

N Heptane is miscible with alcohol, chloroform, and ether. 
N Heptane is widely used as nonpolar solvent.

N Heptane is a flammable liquid, present in crude oil and widely used in the auto- mobile industry. 
For example, as a solvent, as a gasoline knock testing standard, as automotive starter fl uid, and paraffi nic naphtha. n-Heptane causes adverse health effects in occupational workers, such as CNS depression, skin irritation, and pain. Other compounds such as n-octane (CH 3 (CH 2 ) 6 CH 3 ), n-nonane (CH 3 (CH 2 ) 7 CH 3 ), and n-decane (CH 3 (CH 2 ) 8 CH 3 ) have different industrial applications. Occupational workers exposed to these compounds also show adverse health effects. In principle, manage- ment of these aliphatic compounds requires proper handling and disposal to avoid health problems and to maintain chemical safety standards for safety to workers and the living environment.

N Heptane is a clear liquid which is highly flammable and volatile with a mild, gasoline-like odor. 
The odor threshold is 40 547 ppm; also reported @ 230 ppm.

 

APPLICATION:

-N Heptane is best recognized as the standard zero-point for the octane rating scale, which is seen on nearly every gasoline pump worldwide.

-The hydroisomerization of n-heptane to form dibranched and tribranched products useful for producing high octane gasoline.

-N Heptane is used in paints and coatings, GC analysis, HPLC, spectrophotometry and environmental testing.

-The vulcanization of rubber utilizes heptane as a compounder. 

-In the commercial manufacture of rubber cement, unvulcanized rubber is placed in a solvent of 70-90% heptane. 

-Different grades of rubber cement are created depending on a higher or lower percentage of heptane within the solvent.

 

PROPERTIES:

-Quality Level: 200

-vapor density: 3.5 (vs air)

-vapor pressure: 40 mmHg ( 20 °C), 83 mmHg ( 37.7 °C)

-product line: Emplura

-assay:≥99% (GC)

-form:liquid

-autoignition temp.:433 °F

 

CHEMICAL AND PHYSICAL PROPERTIES:

-Boiling point: 97 - 98 °C (1013 hPa)

-Density: 0.68 g/cm3 (15 °C)

-Explosion limit: 1 - 7 %(V)

-Flash point: -4 °C

-Ignition temperature: 215 °C

-Melting Point: -91.0 °C

-Vapor pressure: 48 hPa (20.0 °C)

-Solubility: 0.05 g/l

 

SPECIFICATION:

-Purity (GC): ≥ 99 %

-Identity (IR): conforms

-Color: ≤ 10 Hazen

-Free acid (as CH₃COOH): ≤ 0.0005 %

-Density (d 20 °C/20 °C): 0.683 - 0.686

-Refractive index (n 20/D): 1.387 - 1.388

-Boiling range (97°C-98°C): ≥ 95 % (v/v)

 

STORAGE:

Store at +2°C to +30°C.

 

SYNONYM:

n-Heptane
142-82-5
Heptan
Heptyl hydride
Dipropyl methane
Dipropylmethane
Gettysolve-C
Skellysolve C
Heptanen
Eptani
Pentane, ethyl-
NSC 62784
Heptene, homopolymer
UNII-456148SDMJ
MFCD00009544
456148SDMJ
Heptan 
Eptani 
Heptanen 
67290-43-1
HP6
HSDB 90
PETROLEUM ETHER
EINECS 205-563-8
UN1206
Heptanes
normal heptane
heptan-e
AI3-28784
2ygu
high purity heptane
pharma grade heptane
Heptane, for HPLC
Heptane 96%

 

 

 

 

 

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