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alpha-Methylstyrene

March 09, 2023

α-Methylstyrene (AMS) is an organic compound with the formula C6H5C(CH3)=CH2. It is a colorless oil.[3]

alpha-Methylstyrene
Names
Preferred IUPAC name
(Prop-1-en-2-yl)benzene
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; Isopropenylbenzene
Identifiers
  • 98-83-9 Y
3D model (JSmol)
  • Interactive image
  • Interactive image
Abbreviations AMS
ChemSpider
  • 7129 Y
ECHA InfoCard 100.002.459
KEGG
  • C14395 Y
  • 7407
UNII
  • D46R9753IK Y
  • DTXSID9025661
  • 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)[1]
-80.1·10−6 cm3/mol
Hazards
NFPA 704 (fire diamond)
3
0
0
Flash point 45 °C (113 °F; 318 K)
Explosive limits 1.9–6.1%[1]
Lethal dose or concentration (LD, LC):
4900 mg/kg (oral, rat)[2]
NIOSH (US health exposure limits):
PEL (Permissible)
 C 100 ppm (480 mg/m3)[1]
REL (Recommended)
 TWA 50 ppm (240 mg/m3) ST 100 ppm (485 mg/m3)[1]
IDLH (Immediate danger)
 700 ppm[1]
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 ?)

Synthesis and reactions

AMS is a precursor to plasticizers, resins, and polymers.[4]

AMS and acetophenone are byproducts formed in a variation of the cumene process. It can also be produced by dehydrogenation of cumene.

The homopolymer obtained from this monomer, poly(α-methylstyrene), is unstable, being characterized by a low ceiling temperature.[5]

References

  1. ^ a b c d e NIOSH Pocket Guide to Chemical Hazards. "#0429". National Institute for Occupational Safety and Health (NIOSH).
  2. ^ "alpha-Methyl styrene". Immediately Dangerous to Life or Health Concentrations (IDLH). National Institute for Occupational Safety and Health (NIOSH).
  3. ^ James, Denis H.; Castor, William M. (2007). "Styrene". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a25_329.pub2.
  4. ^ . Archived from the original on 2007-02-28. Retrieved 2009-01-07.
  5. ^ Stevens, Malcolm P. (1999). "6". Polymer Chemistry an Introduction (3rd ed.). New York: Oxford University Press. pp. 193–194. ISBN 978-0-19-512444-6.
 

This article about a hydrocarbon is a stub. You can help Wikipedia by expanding it.

March 09, 2023
alpha, methylstyrene, methylstyrene, organic, compound, with, formula, c6h5c, colorless, namespreferred, iupac, name, prop, benzeneother, names, methylstyrene, phenyl, propene, methyl, phenylethylene, phenylpropene, methylethenyl, benzene, beta, phenylpropene,. a Methylstyrene AMS is an organic compound with the formula C6H5C CH3 CH2 It is a colorless oil 3 alpha Methylstyrene NamesPreferred IUPAC name Prop 1 en 2 yl benzeneOther names a 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 IsopropenylbenzeneIdentifiersCAS Number 98 83 9 Y3D model JSmol Interactive imageInteractive imageAbbreviations AMSChemSpider 7129 YECHA InfoCard 100 002 459KEGG C14395 YPubChem CID 7407UNII D46R9753IK YCompTox Dashboard EPA DTXSID9025661InChI InChI 1S C9H10 c1 8 2 9 6 4 3 5 7 9 h3 7H 1H2 2H3 YKey XYLMUPLGERFSHI UHFFFAOYSA N YInChI 1 C9H10 c1 8 2 9 6 4 3 5 7 9 h3 7H 1H2 2H3Key XYLMUPLGERFSHI UHFFFAOYASSMILES C C c1ccccc1 CCC C c1ccccc1PropertiesChemical formula C 9H 10Molar mass 118 179 g mol 1Appearance Colorless liquidDensity 0 91 g cm3Melting point 24 C 11 F 249 K Boiling point 165 to 169 C 329 to 336 F 438 to 442 K Solubility in water InsolubleVapor pressure 2 mmHg 20 C 1 Magnetic susceptibility x 80 1 10 6 cm3 molHazardsNFPA 704 fire diamond 300Flash point 45 C 113 F 318 K Explosive limits 1 9 6 1 1 Lethal dose or concentration LD LC LD50 median dose 4900 mg kg oral rat 2 NIOSH US health exposure limits PEL Permissible C 100 ppm 480 mg m3 1 REL Recommended TWA 50 ppm 240 mg m3 ST 100 ppm 485 mg m3 1 IDLH Immediate danger 700 ppm 1 Except where otherwise noted data are given for materials in their standard state at 25 C 77 F 100 kPa Y verify what is Y N Infobox referencesSynthesis and reactions EditAMS is a precursor to plasticizers resins and polymers 4 AMS and acetophenone are byproducts formed in a variation of the cumene process It can also be produced by dehydrogenation of cumene The homopolymer obtained from this monomer poly a methylstyrene is unstable being characterized by a low ceiling temperature 5 References Edit a b c d e NIOSH Pocket Guide to Chemical Hazards 0429 National Institute for Occupational Safety and Health NIOSH alpha Methyl styrene Immediately Dangerous to Life or Health Concentrations IDLH National Institute for Occupational Safety and Health NIOSH James Denis H Castor William M 2007 Styrene Ullmann s Encyclopedia of Industrial Chemistry Weinheim Wiley VCH doi 10 1002 14356007 a25 329 pub2 What is alpha methylstyrene AMS Archived from the original on 2007 02 28 Retrieved 2009 01 07 Stevens Malcolm P 1999 6 Polymer Chemistry an Introduction 3rd ed New York Oxford University Press pp 193 194 ISBN 978 0 19 512444 6 This article about a hydrocarbon is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Alpha Methylstyrene amp oldid 1133157403, wikipedia, wiki, book, books, library,

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