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Product name
n-Heptane
Alias
Dipropylmethane; Heptane
CAS RN
142-82-5
EINECS
205-563-8
Molecular formula
C7H16
Molecular weight
100.2019
Dangerous mark
F:Flammable
Xn:Harmful
N:Dangerous for the environment
Risk phrase
Safety term
S16; S29; S33; S60; S61; S62; S9;
Physical and chemical properties
Appearance Colorless volatile liquid
Relative vapor density (air=1):3.45
Saturated vapor pressure (KPa):5.33 (22.3℃)
Combustion heat (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
Use
Mainly used as the standard to test octane number. Also used as the raw material of anesthetic, solvent and organic synthesis, and for the preparation of experimental reagents.

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