Α-Methylstyrene

α-Methylstyrene
Names
Preferred IUPAC name
(Prop-1-en-2-yl)benzene
Other names
2-Phenylpropene; 2-Phenylpropylene; 1-Methyl-1-phenylethylene; 1-Methyl-1-phenylethene; 1-Phenyl-1-methylethylene; 1-Phenyl-1-methylethene; (1-Methylethenyl)benzene; β-Phenylpropene; β-Phenylpropylene; α-Methylstyrol; α-Methylvinylbenzene; Isopropenylbenzene
Identifiers
3D model (JSmol)
Abbreviations AMS
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard 100.002.459
EC Number
  • 202-705-0
KEGG
RTECS number
  • WL5075300
UNII
UN number 2303
  • InChI=1S/C9H10/c1-8(2)9-6-4-3-5-7-9/h3-7H,1H2,2H3 Y
    Key: XYLMUPLGERFSHI-UHFFFAOYSA-N Y
  • InChI=1/C9H10/c1-8(2)9-6-4-3-5-7-9/h3-7H,1H2,2H3
    Key: XYLMUPLGERFSHI-UHFFFAOYAS
  • C=C(c1ccccc1)C
  • CC(=C)c1ccccc1
Properties
C9H10
Molar mass 118.179 g·mol−1
Appearance Colorless liquid
Density 0.91 g/cm3
Melting point −24 °C (−11 °F; 249 K)
Boiling point 165 to 169 °C (329 to 336 °F; 438 to 442 K)
Insoluble
Vapor pressure 2 mmHg (20 °C)
−80.1·10−6 cm3/mol
Hazards
GHS labelling:
Warning
H226, H319, H335, H411
P210, P233, P240, P241, P242, P243, P261, P264+P265, P271, P273, P280, P303+P361+P353, P304+P340, P305+P351+P338, P319, P337+P317, P370+P378, P391, P403+P233, P403+P235, P405, P501
NFPA 704 (fire diamond)
3
0
0
Flash point 45 °C (113 °F; 318 K)
Explosive limits 1.9–6.1%
Lethal dose or concentration (LD, LC):
4900 mg/kg (oral, rat)
NIOSH (US health exposure limits):
PEL (Permissible)
C 100 ppm (480 mg/m3)
REL (Recommended)
TWA 50 ppm (240 mg/m3) ST 100 ppm (485 mg/m3)
IDLH (Immediate danger)
700 ppm
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Y verify (what is YN ?)
Infobox references

α-Methylstyrene (AMS) is an organic compound with the formula C6H5C(CH3)=CH2. It is a colorless oil.