Major Category
Toxic Gases & Vapors
Synonyms
H; Hydrogen; Hydrogen atoms; Molecular hydrogen; Protium; [ChemIDplus] UN1049; UN1966;
Category
Simple Asphyxiants
Description
Colorless gas; [HSDB] Vapor density = 0.069 (lighter than air); [HSDB]
Sources/Uses
Used in welding (oxy-hydrogen and autogenous), petroleum refining, and as a coolant; Used to hydrogenate oils and other organic compounds and to reduce metal oxides; [Merck Index]
Comments
Simple asphyxiant; Contact with evaporating liquid can cause frostbite; [HSDB]
Explanatory Notes
"Appendix F: Minimal Oxygen Content." A simple asphyxiant and explosion hazard; [TLVs and BEIs]
Other Poison
Simple Asphyxiant
Diseases
Occupational diseases associated with exposure to this agent:
Processes
Industrial Processes with risk of exposure: