Sulphur dioxideSO2

CAS-No.:
7446-09-5
UN-No.:
1079
EC-No.:
231-195-2
Hazard identification number:
268
Hazard signs
GHS04
GHS05
GHS06

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

Occupational exposure limit
ACGIH (US)
  • STEL (ppm) 0,25
  • STEL (mg/m3) 0,65
NIOSH (REL) (US)
  • TWA (ppm) 2
  • TWA (mg/m3) 5
  • STEL (ppm) 5
  • STEL (mg/m3) 13
NIOSH (US)
  • IDLH (ppm) 100
OSHA (PEL) (US)
  • TWA (ppm) 5
  • TWA (mg/m3) 13
  • H: 280
    Contains gas under pressure; may explode if heated
  • H: 314
    Causes severe skin burns
    and eye damage.
  • H: 331
    Toxic if inhaled
  • 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:
    -75.5 °C
  • Boiling Point:
    -10 °C
  • Density (at 20 °C, if not notified otherwise):
    0,0029285 (0°C) g/cm3
  • Ionization:
    12.349 ± 0.001 eV
  • Vapour Pressure (at 20 °C, if not notified otherwise):
    3300 hPa
  • Hazardous Effects:
    ED

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

Also known as:
  • Sulfur dioxide
  • Sulfurous acid anhydride
  • Sulfurous oxide

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