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4-Methyl-3-penten-2-oneC6H10O

CAS-No.:
141-79-7
UN-No.:
1229
EC-No.:
205-502-5
Hazard identification number:
30
Hazard signs
GHS02
GHS06
GHS07

*Source: GESTIS Substance Database, https://gestis-database.dguv.de

Occupational exposure limit
ACGIH (US)
  • TWA (ppm) 15
  • TWA (mg/m3) 60
  • STEL (ppm) 25
  • STEL (mg/m3) 100
NIOSH (REL) (US)
  • TWA (ppm) 10
  • TWA (mg/m3) 40
NIOSH (US)
  • IDLH (ppm) 1400 [10% LEL]
OSHA (PEL) (US)
  • TWA (ppm) 25
  • TWA (mg/m3) 100
  • H: 226
    Flammable liquid and vapour
  • H: 302 + 312
    Harmful if swallowed.
    Harmful in contact with skin.
  • H: 315
    Causes skin irritation
  • H: 319
    Causes serious eye irritation
  • H: 331
    Toxic if inhaled
  • H: 335
    May cause respiratory irritation

*Source: GESTIS Substance Database, https://gestis-database.dguv.de

  • Melting point:
    -74.2 °F
  • Boiling Point:
    266 °F
  • Density (at 20 °C, if not notified otherwise):
    0,85 g/cm3
  • Ionization:
    9.10 ± 0.02 eV
  • Flash Point:
    75.2 °F
  • Ignition Temperature:
    644 °F
  • Vapour Pressure (at 20 °C, if not notified otherwise):
    10,9 hPa
  • Lower Explosive Limit:
    1.4 Vol.-%
  • Upper Explosive Limit:
    10.1 Vol.-%
  •  

*Source: GESTIS Substance Database, https://gestis-database.dguv.de

Also known as:
  • 4-Methyl-3-penten-2-one
  • 4-methylpent-3-en-2-one
  • Isobutenyl methyl ketone
  • Isopropylideneacetone
  • Mesityl oxide
  • Mesityloxid
  • Methyl isobutenyl ketone
  • Methylisobutenylketon

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