Styrene

Catalog	ACM100425
CAS	100-42-5
Structure
Category	Environmental Standards
Description	Styrene, also known as ethenylbenzene, vinylbenzene, and phenylethene, is an organic compound with the chemical formula C6H5CH=CH2. This derivative of benzene is a colorless oily liquid that evaporates easily and has a sweet smell, although high concentrations have a less pleasant odor. Styrene is the precursor to polystyrene and several copolymers. Approximately 25 million tonnes (55 billion pounds) of styrene were produced in 2010.
Synonyms	Ethenylbenzene
Molecular Weight	104.15
Molecular Formula	C8H8
Melting Point	-31ºC
Flash Point	31ºC
Density	0.906
Appearance	Clear, colorless
EC Number	202-851-5
Hazard Class	3
Hazard Codes	Xn
HS Code	2902500000
LogP	2.32960
MDL Number	MFCD00008612
Refractive Index	1.546-1.548
RIDADR	UN 2055
Risk Statements	R10; R20; R36/38
RTECS	WL3675000
Safety Statements	S23
Stability	Stable, but may polymerize upon exposure to light. Normally shipped with a dissolved inhibitor. Substances to be avoided include strong acids, aluminium chloride, strong oxidizing agents, copper, copper alloys, metallic salts, polymerization catalysts and
Storage Conditions	2-8ºC
Vapor Density	3.6
Vapor Pressure	12.4 mm Hg ( 37.7 °C)
WGK Germany	2

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