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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Identification

Chemical structure
Display Name:
2-methylpropene
EC Number:
204-066-3
EC Name:
2-methylpropene
CAS Number:
115-11-7
Molecular formula:
C4H8
IUPAC Name:
2-methylprop-1-ene

Type of Substance

Composition:
mono-constituent substance
Origin:
organic

Substance Identifiers open all close all

  • .gamma.-Butylene
  • 1,1-Dimethylethene
  • 1,1-Dimethylethylene
  • 1-Propene, 2-Methyl- (9Cl)
  • 1-Propene, 2-methyl- (9CI)
  • 2-Methyl-1-propene
  • 2-Methylpropenenon confidential
  • 2-Methylpropylene
  • 2-methylpropene
  • Iso-butene
  • Isobuten
  • Isobutene
  • Isobutylene
  • Isolutylene
  • Isopropylidenemethylene
  • Not applicable
  • Poisobutene (PIB)
  • Propene, 2-methyl- (8CI)
  • Propene, 2-methyl- (8Cl)
  • butyl reclaimed rubber
  • iso-Butene
  • iso-C4H8
  • isobutene
  • isobutylene
  • isoprene
  • not applicable
  • polyisobutylene
    • Methylpropene
    (No other type specified)

    Compositions

    Boundary Composition(s) open all close all

    State Form:
    gas


    Constituent 1
    Chemical structure
    Reference substance name:
    2-methylpropene
    EC Number:
    204-066-3
    EC Name:
    2-methylpropene
    CAS Number:
    115-11-7
    Molecular formula:
    C4H8
    IUPAC Name:
    2-methylprop-1-ene

    Legal Entity Composition(s) open all close all

    State Form:
    gas


    Constituent 1
    Chemical structure
    Reference substance name:
    2-methylpropene
    EC Number:
    204-066-3
    EC Name:
    2-methylpropene
    CAS Number:
    115-11-7
    Molecular formula:
    C4H8
    IUPAC Name:
    2-methylprop-1-ene
    State Form:
    liquid


    Constituent 1
    Chemical structure
    Reference substance name:
    2-methylpropene
    EC Number:
    204-066-3
    EC Name:
    2-methylpropene
    CAS Number:
    115-11-7
    Molecular formula:
    C4H8
    IUPAC Name:
    2-methylprop-1-ene
    State Form:
    other: Monomer in imported polymer.
    Degree of purity:
    >= 97 - <= 100 % (w/w)


    Constituent 1
    Chemical structure
    Reference substance name:
    2-methylpropene
    EC Number:
    204-066-3
    EC Name:
    2-methylpropene
    CAS Number:
    115-11-7
    Molecular formula:
    C4H8
    IUPAC Name:
    2-methylprop-1-ene
    Impurity 1
    Reference substance name:
    unknown impurity
    CAS Number:
    unknown impurity
    Molecular formula:
    unknown impurity
    IUPAC Name:
    unknown impurity
    State Form:
    gas


    Constituent 1
    Chemical structure
    Reference substance name:
    2-methylpropene
    EC Number:
    204-066-3
    EC Name:
    2-methylpropene
    CAS Number:
    115-11-7
    Molecular formula:
    C4H8
    IUPAC Name:
    2-methylprop-1-ene
    State Form:
    gas


    Constituent 1
    Chemical structure
    Reference substance name:
    2-methylpropene
    EC Number:
    204-066-3
    EC Name:
    2-methylpropene
    CAS Number:
    115-11-7
    Molecular formula:
    C4H8
    IUPAC Name:
    2-methylprop-1-ene
    State Form:
    gas