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FormaldehydeCH2O

CAS-No.:
50-00-0
UN-No.:
2209
EC-No.:
200-001-8
Hazard identification number:
80
Hazard signs
GHS05
GHS06
GHS07
GHS08

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

Occupational exposure limit
ACGIH (US)
  • TWA (ppm) 0,1
  • TWA (mg/m3) 0,12
  • STEL (ppm) 0,3
  • STEL (mg/m3) 0,37
NIOSH (REL) (US)
  • TWA (ppm) 0,016
  • STEL (ppm) C 1 (15min)
NIOSH (US)
  • IDLH (ppm) 20
OSHA (PEL) (US)
  • TWA (mg/m3) 0,75
  • STEL (mg/m3) 2
  • H: 301 + 311 + 331
    Toxic if swallowed.
    Toxic in contact with skin.
    Toxic if inhaled.
  • H: 314
    Causes severe skin burns
    and eye damage.
  • H: 317
    May cause an allergic skin reaction
  • H: 335
    May cause respiratory irritation
  • H: 341
    Suspected of causing genetic defects. 
  • H: 350
    May cause cancer.
  • H: 370
    Causes damage to organs (or state all
    organs affected, if known) (state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard).

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

  • Melting point:
    -117 °C
  • Boiling Point:
    -19 °C
  • Density (at 20 °C, if not notified otherwise):
    0,8153 g/cm3
  • Ionization:
    10.88 ± 0.01 eV
  • Flash Point:
    50 °C - 85 °C
  • Ignition Temperature:
    430 °C
  • Vapour Pressure (at 20 °C, if not notified otherwise):
    4378...4420 (gas); 2 (37% solution) hPa
  • Lower Explosive Limit:
    7 Vol.-%
  • Upper Explosive Limit:
    73 Vol.-%
  • Hazardous Effects:
    C, Ss, M

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

Also known as:
  • Carbonyl hydride
  • Formalin
  • Formol
  • HCHO
  • Methanal
  • Methyl aldehyde
  • Methylene glycol
  • Methylene oxide
  • Oxomethane
  • Oxymethylene

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