Nomenclature
CAS number: 142-82-5
Heptane.
C
7H
16; mol wt 100.20.
C 83.91%, H 16.09%.
Description and references
A hydrocarbon from petroleum. Toxicity data:
Lazarew, Arch. Exp. Pathol. Pharmakol. 143, 223 (1929).
Properties
Volatile, flammable liquid. d420 0.684. bp 98.4°. mp 90.7°. Flash
pt, open cup: 30°F (1°C); closed cup: 25°F (4°C). nD25 1.3855. Insol in water. Sol in alcohol, chloroform,
ether. LC (2 hr in air) in mice: 75 mg/l (Lazarew).Caution
Potential symptoms of overexposure
are lightheadedness, giddiness, stupor, vertigo, incoordination; loss
of appetite, nausea; unconsciousness. Direct contact may cause dermatitis;
aspiration of liquid may cause chemical pneumonia. See NIOSH Pocket Guide to Chemical Hazards (DHHS/NIOSH 97-140, 1997) p 156.Use
As standard in testing knock of gasoline engines.