METHYLSTYRENE

METHYLSTYRENE Property

Melting point:

-77°C

Boiling point:

169-172 °C(lit.)

Density 

0.896 g/mL at 20 °C

vapor pressure 

1.47 hPa ( 20 °C)

refractive index 

n20/D 1.5425(lit.)

Flash point:

127 °F

storage temp. 

Store below +30°C.

form 

liquid

explosive limit

1.1-5.2% (v/v)

Safety

Hazard Codes 

Xi

Risk Statements 

10-38

Safety Statements 

36

RIDADR 

UN 2618 3/PG 3

WGK Germany 

3

RTECS 

WL5075000

Autoignition Temperature

575°C

HazardClass 

3.2

PackingGroup 

III

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H226Flammable liquid and vapour

H332Harmful if inhaled

Precautionary statements

P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.

P233Keep container tightly closed.

P240Ground/bond container and receiving equipment.

P241Use explosion-proof electrical/ventilating/lighting/…/equipment.

P242Use only non-sparking tools.

METHYLSTYRENE Chemical Properties,Usage,Production

Uses

α-Methylstyrene is a byproduct of the cumene process for producing phenol and acetone. Its main uses are as follows: 1. Organic synthesis intermediate: α-MS is a basic raw material for organic synthesis and can be used to synthesize cumene, dicumene peroxide, p-cumylphenol, etc. 2. Comonomer: α-MS can be used as a resin modifier, copolymerizing with acrylonitrile, methyl methacrylate, maleic anhydride, etc., to produce copolymer resins with different properties.

Definition

ChEBI: 4-Methylstyrene is a member of styrenes.