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AcetyleneC2H2

CAS-No.:
74-86-2
UN-No.:
1001
EINECS No.:
200-816-9
Kemler Code:
239
Hazard signs
GHS02
GHS04

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

Occupational exposure limit
NIOSH (REL) (US)
  • STEL (ppm) C 2500
  • STEL (mg/m3) C 2662
  • H: 220
    Extremely flammable gas
  • H: 230
  • H: 280
    Contains gas under pressure; may explode if heated

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

  • Melting point:
    -80.8 °C
  • Density (at 20 °C):
    0,0011772 (0°C) g/cm3
  • Ionization:
    11.400 ± 0.002 eV
  • Ignition Temperature:
    305 °C
  • Vapor Pressure (at 20 °C):
    43360 (20 °C) hPa
  • Lower Explosive Limit:
    2.3 Vol.-%
  • Upper Explosive Limit:
    100 Vol.-%
  •  

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

Also known as:
  • Ethine
  • Ethyne
  • Narcylen

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