Health Effects
Hydrogen is non-toxic but can cause asphyxiation by displacing air in a closed space
RTECS Description: None
Carcinogenicity: IARC/NTC: Not listed as carcinogenic.
Exposure Limits:
ACGIH: none
NIOSH none
None (simple asphyxiant)
OSHA: none
Steri-Trac® H2 Monitor
Availability: Special Order
Specifications:*
Sensor Type Electrochemical
Range: 0 – 1,000 ppm
Resolution: 2 ppm
Temp Range: -20 to +50 oC
Response time (t50): <50 s
Properties and Applications:
Hydrogen is used in many applications from welding to hydrogenation of vegetable oils, and chemical synthesis and processing fossil fuels. Hydrogen is used as a propellant in the space shuttle and is also gaining prominence as a zero emissions fuel for automobiles and in fuel cells.
Physical Properties:
Chemical Formula: H2
Physical form: Colorless gas
MP: -259 oC
BP: -253oC
LEL 4%
Odor Threshold: Odorless
MW: 2.00 g/mol
Rel. Gas Density: 0.07 (Air = 1)
Classification Numbers:
CAS No.: 1333-74-0
EC No.: 001-001-00-9
RTECS: MX0900000
*Specifications subject to change
If higher concentrations of hydrogen need to be measured, contact ChemDAQ about the ChemDAQ combustible gas sensor.
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