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8.06086

Sigma-Aldrich

α-Methylstyrene

(stabilised with 4-tert-butylpyrocatechol) for synthesis

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Synonym(s):
α-Methylstyrene, 2-Phenyl-1-propene, Isopropenylbenzene
Linear Formula:
C6H5C(CH3)=CH2
CAS Number:
Molecular Weight:
118.18
MDL number:
EC Index Number:
202-705-0

vapor pressure

2.9 hPa ( 20 °C)

Quality Level

Assay

≥99.0% (GC)

form

liquid

autoignition temp.

445 °C

potency

4900 mg/kg LD50, oral (Rat)

expl. lim.

0.9-6.6 % (v/v)

pH

5-6 (500 g/L in H2O)

bp

164 °C/1013 hPa

mp

-23 °C

transition temp

flash point 40 °C (DIN 51758)

solubility

560 mg/L

density

0.91 g/cm3 at 20 °C

storage temp.

2-30°C

InChI

1S/C9H10/c1-8(2)9-6-4-3-5-7-9/h3-7H,1H2,2H3

InChI key

XYLMUPLGERFSHI-UHFFFAOYSA-N

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This Item
8.22098M80903111848
α-Methylstyrene (stabilised with 4-tert-butylpyrocatechol) for synthesis

Sigma-Aldrich

8.06086

α-Methylstyrene

Methylstyrene (mixture of 3- and 4-isomers) stabilised with 4-tert-butylpyrocatechol for synthesis

Sigma-Aldrich

8.22098

Methylstyrene

α-Methylstyrene 99%, contains 15 ppm p-tert-butylcatechol as inhibitor

Sigma-Aldrich

M80903

α-Methylstyrene

form

liquid

form

liquid

form

liquid

form

-

bp

164 °C/1013 hPa

bp

-

bp

165-169 °C (lit.)

bp

175 °C (lit.)

mp

-23 °C

mp

-77 °C

mp

−24 °C (lit.)

mp

-

solubility

560 mg/L

solubility

-

solubility

-

solubility

-

density

0.91 g/cm3 at 20 °C

density

0.893 g/cm3 at 25 °C

density

0.909 g/mL at 25 °C (lit.)

density

0.911 g/mL at 25 °C (lit.)

Analysis Note

Assay (GC, area%): ≥ 99.0 % (a/a)
Density (d 20 °C/ 4 °C): 0.908 - 0.910
Identity (IR): passes test

Signal Word

Danger

Hazard Classifications

Aquatic Chronic 2 - Asp. Tox. 1 - Eye Irrit. 2 - Flam. Liq. 3 - Repr. 2 - Skin Sens. 1 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

3 - Flammable liquids

WGK

WGK 2

Flash Point(F)

114.8 °F - closed cup

Flash Point(C)

46 °C - closed cup


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