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EINECS No.:203-449-2
Kemler Code:23
Warning sign
  • 23
  • 1012
Hazard signs
Occupational exposure limit
  • TWA (ppm) 250
  • TWA (mg/m3) 583
  • H: 220
    Extremely flammable gas
  • H: 280
    Contains gas under pressure; may explode if heated
Melting point:-185.35 °C
Boiling Point:-6.2 °C
Density (at 20 °C):0,002594 (0°C) g/cm3
Ionization:9.55 ± 0.06 eV
Flash Point:-80 °C
Ignition Temperature:360 °C
Vapor Pressure (at 20 °C):2500 hPa
Lower Explosive Limit:1,5 Vol.-%
Upper Explosive Limit:10,6 Vol.-%
diamond40 1


Diamond-Red4Easy flammable 
Diamond-Yellow0No danger for normal conditions 
Diamond-Blue1Low risk. Filter recommended 
Also known as:
  • 1-Butylene
  • But-1-ene
  • Butene
  • Ethylethylen
  • Ethylethylene
  • α-Butene
  • α-Butylene

Suitable products for 1-Butene C4H8

Whether portable gas detectors, tubes or personal protective equipment - Dräger offers a comprehensive portfolio to protect you when handling hazardous substances.

Protective Suits


Quần áo chống hóa chất CPS 7900

Quần áo bảo hộ Dräger CPS 7800

Get in touch with Dräger

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