Hazard identification number:23
Warning sign
  • 23
  • 1055
Hazard signs
  • H: 220
    Extremely flammable gas
  • H: 280
    Contains gas under pressure; may explode if heated
Melting point:-140.35 °C
Boiling Point:-7.1 °C
Density (at 20 °C, if not notified otherwise):0,002599 g/cm3
Ionization:9.22 ± 0.02 eV
Flash Point:-80 °C
Ignition Temperature:465 °C
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:
  • 2-Methylpropen
  • Isobutene
  • Isobutylen

Suitable products for isobuten 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 vapours and oxygen
Multi-gas detector

Dräger X-am® 5600

  • 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 ...
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
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
Infrared Sensors

Dräger 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 sensor

PID sensors

  • PID sensor
  • ​detection of volatile organic compounds in low concentrations
  • compatible with: X-am 7000 and X-am 8000 – selective benzene measurement with pre-tubes possible
  • measuring range: in ppm ...
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 ...
Catalytic Ex-Sensors

Dräger Catalytic Ex-Sensors

  • Catalytic Ex-Sensors
  • ​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.-%

Gas Detection Tubes

Short-term Tubes

Dräger Short-term Tubes

  • 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
  • display for clear readability of results
  • can be used in explosive areas
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 

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