What is pure benzene (CAS 71-43-2)?

2025,10,20

CAS 71-43-2 Pure Benzene is a colorless and highly flammable liquid with a sweet smell, and is partially responsible for the aroma of gasoline. Pure Benzene is used primarily as a precursor to the manufacture of chemicals with more complex structures, such as ethylbenzene and cumene, of which billions of kilograms are produced annually.

Common Names	Pure benzene CAS 71-43-2
Structure	C6H6
CAS　No.	71-43-2	Boiling Point (℃)	80 ºC
Molecular Weight	78.112	Melting Point (℃)	5.5 °C(lit.)
Appearance	Colorless liquid	Density	0.9±0.1 g/cm3
HS Code	2707100000	Flash Point	-11 ºC
Solubility	Can be arbitrarily mixed with ethanol, ether, acetone, chloroform, carbon disulfide and acetic acid, and slightly soluble in water.	Vapor pressure	100.9±0.1 mmHg at 25°C

Pure Benzene is used mainly as an intermediate to make other chemicals. it is primarily used in the manufacture of nylon fibers, which are processed into textiles and engineering plastics. Smaller amounts of benzene are used to make some types of rubbers, lubricants, dyes, detergents, and pesticides.

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