Product name

n-Heptane

English name

n-Heptane

Alias

Dipropylmethane; Heptane; Heptyl hydride; n-Heptane? Normal heptane

CAS RN

142-82-5

EINECS No.

205-563-8

Molecular formula

C₇H₁₆

Molecular weight

100.2019

Risk phrases

R11; R38; R50/53; R65; R67;

Safety term

S16; S29; S33; S60; S61; S62; S9;

Physico-chemical property

appearance colorless volatile liquid
relative vapour density（air=1）: 3.45
saturated vapor pressure（KPa）: 5.33（22.3℃）
heat of combustion（kj/mol）: 4806.6
critical temperature（℃） 201.7
critical pressure（MPa）: 1.62 
ignition temperature（℃） 204
upper explosive limit %（V/V）: 6.7
lower explosive limit %（V/V）: 1.1

Uses

standard product for testing of octane number; raw material of anesthetic, solvent and organic synthesis; preparation of experiment reagent