| AAR |
Association of American Railroads |
| ACGIH |
American Conference of Governmental Industrial Hygienists |
| AIHA |
American Industrial Hygiene Association |
| BP |
Boiling point |
| C |
Ceiling Limit; The exposure level to a substance that shall not be exceeded at any time during an 8-hour shift, except for up to a concentration not exceeding the maximum duration specified. |
| CAMEO |
Computer-Aided Management of Emergency Operations |
| CAS |
Chemical Abstracts Service |
| CASRN |
Chemical Abstracts Service Registry Number |
| CHRIS |
Chemical Hazards Response Information System, maintained by the U.S. Coast Guard |
| CPR |
Cardiopulmonary Resuscitation |
| DOE |
U.S. Department of Energy |
| DOT |
U.S. Department of Transportation |
| EEGL |
Emergency Exposure Guidance Level |
| EPA |
Environmental Protection Agency |
| ERPG |
Emergency Response Planning Guideline |
| ESLI |
End of Service Life Indicator |
| Fl.P |
Flash Point |
| FRZ |
Freezing Point (NIOSH) |
| HCN |
Health Code Number |
| HHR |
Health Hazard Rating |
| HR |
Hazard Rating (SAX) |
| HSDB |
Hazardous Substances Data Bank |
| HSS |
U.S. Department of Energy Office of Health, Safety and Security |
| HTOX |
Hepatotoxicity |
| IDLH |
Immediately Dangerous to Life or Health |
| IP |
Ionization Potential |
| IRIS |
Integrated Risk Information System |
| LANL |
Los Alamos National Laboratory |
| LC |
Lethal Concentration |
| LC50 |
Lethal Concentration 50% |
| LCLO |
Lowest Lethal Concentration |
| LD |
Lethal Dose |
| LD50 |
Lethal Dose 50% |
| LDLO |
Lowest Lethal Dose |
| LEL |
Lower Explosive Limit |
| LLNL |
Lawrence Livermore National Laboratory |
| LOC |
Level of Concern |
| LOEL |
Lowest Observed Effect Level |
| m3 |
Cubic meter |
| MAC |
Maximal Allowable Concentration from Netherlands National |
| MAK |
Maximale Arbeitsplatz-Konzentration (maximum workplace concentration) from the German Research Foundation |
| MF |
Molecular Formula |
| mg |
Milligram |
| min |
Minute |
| MLT |
Melting Point (NIOSH) |
| Mol Wt |
Molecular Weight |
| MP |
Melting Point |
| MSDS |
Material Safety Data Sheet |
| MW |
Molecular Weight |
| NFPA |
National Fire Protection Association |
| NIC |
Notice of Intended Changes |
| NIOSH |
National Institute for Occupational Safety and Health |
| NLM |
National Laboratory of Medicine |
| NOAA |
National Oceanic and Atmospheric Administration |
| NPG |
NIOSH Pocket Guide to Chemical Hazards |
| NTP |
National Toxicology Program |
| OEL |
Occupational Exposure Limit |
| OEV |
Occupational Exposure Value |
| OHMTADS |
Oil and Hazardous Materials Technical Assistance Data System |
| OSHA |
Occupational Safety and Health Administration |
| PAC |
Protective Action Criterion |
| PEL |
Permissible Exposure Limit |
| PNOS |
Particulates Not Otherwise Specified |
| ppm |
Parts Per Million |
| REL |
Recommended Exposure Limit |
| RTECS |
Registry of Toxic Effects of Chemical Substances |
| SAR |
Structure Activity Relationship |
| SAX Number |
Each chemical’s identifying code as used in Sax’s Dangerous Properties of Industrial Chemicals (SAX) |
| SCAPA |
U.S. Department of Energy Subcommittee on Consequence Assessment and Protective Actions |
| SCBA |
Self-contained Breathing Apparatus |
| SCT |
Secretariat of Transportation and Communications of Mexico |
| SG |
Specific Gravity |
| STEL |
Short-Term Exposure Limit |
| TC |
Toxic Concentration |
| TCLO |
Lowest Toxic Concentration |
| TD |
Toxic Dose |
| TDLO |
Lowest Toxic Dose |
| TEEL |
Temporary Emergency Exposure Limit |
| TIH |
Toxic-by-inhalation |
| TLV |
Threshold Limit Value |
| TSCA |
Toxic Substances Control Act |
| TWA |
Time-Weighted Average |
| UEL |
Upper Explosive Limit |
| UN |
United Nations |
| USCG |
U.S. Coast Guard |
| VD |
Vapor Density |
| VP |
Vapor Pressure |
| WEEL |
Workplace Environmental Exposure Level |
| WSRC |
Westinghouse Savannah River Company |
| °C |
Degrees Celsius |
