4-TERT-BUTYLSTYRENE

4-TERT-BUTYLSTYRENE Property

Melting point:

-38°C

Boiling point:

91-92 °C/9 mmHg (lit.)

Density 

0.875 g/mL at 25 °C (lit.)

vapor pressure 

18.5Pa at 25℃

refractive index 

n20/D 1.526(lit.)

Flash point:

181 °F

storage temp. 

2-8°C

form 

clear liquid

color 

Colorless to Almost colorless

Water Solubility 

Not miscible in water.

BRN 

1903714

LogP

4.44 at 20℃

CAS DataBase Reference

1746-23-2(CAS DataBase Reference)

EPA Substance Registry System

p-tert-Butylstyrene (1746-23-2)

Safety

Hazard Codes 

Xi

Risk Statements 

36/37/38

Safety Statements 

26-36

RIDADR 

NA 1993 / PGIII

WGK Germany 

3

TSCA 

Yes

HS Code 

29029090

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P271Use only outdoors or in a well-ventilated area.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

4-TERT-BUTYLSTYRENE Chemical Properties,Usage,Production

Uses

4-tert-Butylstyrene is used as pharmaceutical intermediates.

Preparation

A catalyst was prepared by dissolving 0.1 g of palladium in 10 ml. of pyridine, adding 10 ml. of silica gel particles to the solution, and evaporating the mixture to dryness. The obtained catalyst (10 ml.), 20 ml. of tert-butylbenzene, and 10 ml. of acetic acid were enclosed in a microbomb having an inner volume of 50 ml., and ethylene and oxygen were introduced into the bomb in terms of a pressure of 10 kg/cm2 and 30 kg/cm2, respectively, from the upper valve. The reaction was carried out at 150°C for 5 hours with laying said bomb in an oil bath equipped with a shaking means. tert-Butylstyrene was yielded in a proportion of 470 %, based on the mole of palladium in the used catalyst.

Materials Uses

4-TERT-BUTYLSTYRENE is useful as a comonomer for preparing copolymers or as a curing agent for fibre-reinforced plastics because it has such effects as lessening the mold shrinkage of molded articles and improving the moldability of plastics.