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Hazard identification number:23
Warning sign
  • 23
  • 1055
Hazard signs
Occupational exposure limit
  • TWA (ppm) 250
  • TWA (mg/m3) 574
  • H: 220
    Extremely flammable gas.
  • H: 280
    Contains gas under pressure; may explode if heated
Melting point:-220.63 °F
Boiling Point:19.22 °F
Density (at 20 °C, if not notified otherwise):0,002599 g/cm3
Ionization:9.22 ± 0.02 eV
Flash Point:-112 °F
Ignition Temperature:869 °F
Vapour Pressure (at 20 °C, if not notified otherwise):2590 hPa
Lower Explosive Limit:1,6 Vol.-%
Upper Explosive Limit:10 Vol.-%
diamond40 1


Diamond-Red4Flammability: Easily flammable 
Diamond-Yellow0Instability: No danger for normal conditions 
Diamond-Blue1Health: Low risk. Filter recommended 
Also known as:
  • 1-Propene, 2-methyl-
  • 2-methylprop-1-ene
  • 2-Methylpropene
  • Butyl Rubber Ceclaim
  • i-Butylene
  • Isobutene
  • Isobutylen

Suitable products for i-butene C4H8

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

Portable Gas Detectors and Sensors

Multi-gas detector

Dräger X-am® 8000

  • Multi-gas detector
  • ​1- to 7 gas detection device
  • for clearance measurement
  • detection of toxic and combustible gases as well as vapors and oxygen

Single-gas detector

Dräger Pac® 8000

  • Single-gas detector
  • for personal air monitoring 
  • detection of 29 different gases - including special gases such as nitrogen dioxide, ozone or phosgene
  • non-disposable

Multi-gas detector

Dräger X-am® 5000

  • Multi-gas detector
  • ​1 to 5 gas detection device
  • for personal air monitoring 
  • detection of flammable and toxic gases and organic vapours as well as oxygen and harmful concentrations
Multi-gas detector

Dräger X-am® 2500

  • Multi-gas detector
  • ​1 to 4 gas detection device
  • for personal air monitoring 
  • detection of flammable gases and vapours as well as O2, CO, NO2, SO2 and H2S
Multi-gas detector

Dräger X-am® 5600 Personal Monitor

  • Multi-gas detector
  • ​1 to 6 gas detection device
  • for personal air monitoring 
  • detection of explosive, flammable and toxic gases as well as vapours and oxygen

Multigas detector

Dräger X-pid® 9500

  • Multigas detector
  • ​​Selective VOC gas detection
  • For frequent testing of toxic & carcinogenic substances
  • Laboratory quality results in very low concentrations
  • Benzene measurement starting from 50 ...
Infrared Sensors

Infrared sensors

  • Infrared Sensors
  • ​monitoring of explosive mixtures and CO2
  • recommended for frequent occurrence of explosive gases
  • compatible with: X-am 5600 / 7000 / 8000
  • measuring range: lower explosion limit up to 100 vol.%, for ...

PID sensors

Catalytic Ex-Sonsors

Dräger Catalytic Ex-Sensors

  • Catalytic Ex-Sonsors
  • ​monitoring of explosive mixtures
  • high poisoning resistance to silicones and H2S
  • compatible with: X-am family
  • measuring range: lower explosion limit up to 100 vol.-%
Electrochemical sensor XS

DrägerSensor® XS

  • Electrochemical sensor XS
  • ​monitoring of toxic gases and oxygen deficiency including hydrides, amines, organic vapours
  • compatible with: X-am 3000 and X-am 7000
  • measuring range: in vol.-% and ...
Electrochemical sensor XXS

DrägerSensor® XXS

  • Electrochemical sensor XXS
  • ​monitoring of toxic gases and lack of oxygen
  • compatible with: Pac series and X-am family
  • measuring range: in vol.-% and ppm

Gas Detection Tubes

Short-term tubes

Dräger-Tubes® for short-term measurements

  • Short-term tubes
  • ​results are directly shown at the end of the measurement process
  • spot measurement for more than 500 different gases 
  • short measurement time: between 5 seconds to 15 ...
Automatic tube pump

Dräger X-act® 5000 Basic

  • Automatic tube pump
  • ideal for a high number of strokes
  • can be used in explosive areas
  • highly visible end of measurement indicator
Manual tube pump

Dräger accuro

  • Manual tube pump
  • for spot measurements with a limited number of strokes
  • integrated stroke counter for safe control
  • easy to operate with one hand
  • can be used in explosive areas 

Get in touch with Dräger

If you need further advice for the product selection or if you have not yet found what you want, get in touch with us, we'll find a solution for you.

Discover more: Dräger VOICE - The hazmat-based safety product finder

You know what - We know how! Our database provides you with basic information on more than 1,500 hazardous substances and guides you, according to a substance, to suitable gas detectors and protection equipment. Give it a try!

VOICE Hazmat