alpha-Methylstyrene

α-Methylstyrene[1]
Names
IUPAC name
Isopropenylbenzene
Other names
α-Methylstyrene; 2-Phenyl-1-propene; 1-Methyl-1-phenylethylene; 2-Phenylpropene; (1-Methylethenyl)benzene; beta-Phenylpropene; 2-Phenylpropylene; beta-Phenylpropylene; alpha-Methylstyrol; 1-Phenyl-1-methylethylene; 2-Phenyl-2-propene
Identifiers
Abbreviations AMS
98-83-9 Yes
ChemSpider 7129 Yes
Jmol-3D images Image
Image
KEGG C14395 Yes
PubChem 7407
Properties
Molecular formula
 C9H10
Molar mass 118.18 g·mol−1
Appearance Colorless liquid
Density 0.91 g/cm3
Melting point −24 °C (−11 °F; 249 K)
Boiling point 165 °C (329 °F; 438 K)
Insoluble
Hazards
NFPA 704
Flammability code 0: Will not burn. E.g., water Health code 3: Short exposure could cause serious temporary or residual injury. E.g., chlorine gas Reactivity code 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g., liquid nitrogen Special hazards (white): no codeNFPA 704 four-colored diamond
0
3
0
Flash point 45 °C (113 °F; 318 K)
Explosive limits 1.9%-6.1%[2]
Oral rat: 4900 mg/kg
US health exposure limits (NIOSH):
C 100 ppm (480 mg/m3)[2]
Except where noted otherwise, data is given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
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Infobox references

α-Methylstyrene (AMS) is a chemical intermediate used in the manufacture of plasticizers, resins and polymers.[3] It is a co-product formed in a variation of the cumene process. The homopolymer obtained from this monomer, poly(α-methylstyrene), is unstable, being characterized by a low ceiling temperature.

References

  1. ↑ alpha-METHYLSTYRENE at chemicalland21.com
  2. ↑ 2.0 2.1 "NIOSH Pocket Guide to Chemical Hazards #0429". National Institute for Occupational Safety and Health (NIOSH).
  3. ↑ What is alpha-methylstyrene (AMS)?