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Hydrogen (H2)

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.