Hydrogen

RTECS #
MW8900000
CAS #
1333-74-0
See: NMAM or OSHA Methods
Updated
December 2017
Molecular Weight
2.02
Molecular Formula
H2
Synonyms
Hydrogen (ACGIH:OSHA)

Reviews

OrganizationStandardReference
American Conference of Governmental Industrial Hygienists (ACGIH)Threshold Limit Value-Simple asphyxiantDTLVS* TLV/BEI,2013
TOXICOLOGY REVIEWMUREAV 770,170,2016

Standards and Regulations

OrganizationStandardReference
Mine Safety and Health Administration (MSHA) STANDARDASPHYXIANTS/GASESDTLWS* 3,20,1973
Occupational Exposure Limit IN ARGENTINA, BULGARIA, COLOMBIA, JORDAN check ACGIH TLV;
Occupational Exposure Limit IN SINGAPORE, VIETNAM check ACGIH TLV
Occupational Exposure Limit-AUSTRALIAAsphyxiant, JUL2008
Occupational Exposure Limit-BELGIUMAsphyxiant, MAR2002
Occupational Exposure Limit-MEXICOSimple asphyxiant, 2004
Occupational Exposure Limit-NEW ZEALANDSimple asphyxiant, JAN2002
Occupational Exposure Limit-SWITZERLANDasphyxiant, JAN2011
Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (Construction)simple asphyxiant-inert gases and vaporsCFRGBR 29,1926.55,1994
Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (Shipyards)Simple asphyxiants - inert gases and vaporsCFRGBR 29,1915.1000,1993

NIOSH Documentation and Surveillance

OrganizationStandardReference
National Occupational Exposure Survey 1983Hazard Code 38585; Number of Industries 116; Total Number of Facilities 8936; Number of Occupations 87; Total Number of Employees Exposed 149225; Total Number of Female Employees Exposed 15985
National Occupational Hazard Survey 1974Hazard Code 38585; Number of Industries 90; Total Number of Facilities 5607; Number of Occupations 68; Total Number of Employees Exposed 49112

Status in Federal Agencies

OrganizationReference
EPA TSCA Section 8(b) CHEMICAL INVENTORY
EPA TSCA Section 8(d) unpublished health/safety studies
EPA TSCA TEST SUBMISSION (TSCATS) DATA BASE, JANUARY 2001
Page last reviewed: November 16, 2018