STYRENE MONOMER

PRODUCT IDENTIFICATION
CAS NO.

100-42-5

STYRENE
EINECS NO. 202-851-5
FORMULA H2C=C6H5CH
MOL WT.

104.15

H.S. CODE

 2902.50
TOXICITY Oral rat LD50: 2650 mg/kg
SYNONYMS

Vinyl benzene; Stryrene; Cinnamenol; Cinnamol;

Cinnamene; Cinnamenol; Ethenylbenzene; Phenethylene; Vinylbenzene; Vinylbenzol; Phenylethene; Stirolo (Italian); Styreen (Dutch); Styren (Czech); Styrol (German); Styrolene; Styron; Styropol; Styropor; Vinylbenzen (Dutch);
DERIVATION

 

CLASSIFICATION

 

GENERAL DESCRIPTION

Styrene Monomer is the raw material for polystyrene and EPS, accounting for approximately two thirds of total styrene monomer production. The remaining styrene monomer is used as a feedstock in the production of SAN, ABS and the unsaturated polyester resins, SBR and polymer latex. Major downstream styrene markets (polystyrene and ABS) are under pressure as a result of oversupply and interpolymer competition, although rationalization of older, smaller styrenics units should help balance out the market.

PHYSICAL AND CHEMICAL PROPERTIES
PHYSICAL STATE

Clear liquid
MELTING POINT -30 - 31 C
BOILING POINT 145 - 146 C
SPECIFIC GRAVITY

0.91

SOLUBILITY IN WATER

< 1%
pH 7
VAPOR DENSITY 3.60

AUTOIGNITION

 

NFPA RATINGS

 Health: 2; Flammability: 3; Reactivity: 2

REFRACTIVE INDEX

 1.5470
FLASH POINT  
STABILITY Stable under ordinary conditions. But forming peroxides in the absence of inhibitors.

APPLICATIONS

Polystyrene, ABS resins, SB latex,unsaturated polyester resins, SB rubber, thermoplastic elastomers ,styrene-butadiene, styrene-maleic styrene-acrylic ester copolymers.
SALES SPECIFICATION

APPEARANCE

Clear liquid

PURITY

99.7% min [G.C.]
POLYMER

10ppm max [ASTM D-2121]

CHLORIDES

1ppm max [ASTM D-2747]

SULFUR

1ppm max [ASTM D-2747]
COLOR, APHA

10max [ASTM D-1209]

BENZALDEHYDE

100ppm max [ASTM D2119]

H2O2

50ppm max [ASTM D2340]

INHIBITOR(TBC)

10 - 20ppm max [Badger Method 8]

TRANSPORTATION
PACKING 180kgs in drum
HAZARD CLASS Not regulated
UN NO.

 
OTHER INFORMATION
Hazard Symbols: XN, Risk Phrases: 10-36/38-20-23