CAS Number – Chemical Abstract Service registry number. Unique
identification number assigned to this chemical by the American Chemical
Society.UN/NA Number – The United Nations-North America number (also called
UN number or DOT number). Four-digit number identifying an individual
chemical or group of chemicals with similar characteristics. Required on
shipping papers; often shown on placards or labels. This numbering system
was developed by the U.S. Department of Transportation, and then became
the UN standard system for classifying hazardous materials.STCC Number – Standard Transportation Commodity Code. Sounds like
“Stick number.” Seven-digit chemical identification code used by the
Association of American Railroads. A STCC number beginning with “49”
indicates a hazardous material.CHRIS Code – Three-letter code used by the U.S. Coast Guard to
identify individual chemicals included in its

NFPA 704 – Diamond-shaped label containing codes indicating the
level of the chemical’s toxic, flammability, and reactivity hazard, along
with special hazards such as water- and air-reactivity.

DOT Hazard Label – Required DOT hazard warning label for the
chemical (e.g., “Flammable Liquid,” “Corrosive”). This label must be
displayed on shipped packages, railroad tank cars, and tank trucks
according to specifications described in 49 CFR 172.

General Description – Brief description of the general appearance,
behavior, and hazardousness of the chemical.

Reactivity Alerts – Special alerts for chemicals that are
especially reactive.Air & Water Reactions – Special alerts for chemicals that react
with air and/or water or moisture.Fire Hazard – Description of the chemical’s flammability,
byproducts that may evolve if the chemical is burned, and risk of
explosion.Health Hazard – Description of the health hazards of the chemical,
such as toxicity, flammability, and corrosivity.

Reactivity Profile – Description of the potential reactivity
between the chemical and other chemicals, as well as its reactivity with
air and water, and any other intrinsic reactive hazards (e.g.,
polymerizability, peroxidizability).

Reactive Groups – The reactive group, or groups, to which the
chemical was assigned, based on its known chemistry. Reactive groups are
categories of chemicals that react in similar ways because they are
similar in their chemical structure.

Special WMD note – For chemicals that historically have been used
as weapons of mass destruction (WMDs) or that could be used as WMDs, a
special note describes the physical clues that can help you to assess
whether an attack has taken place.

Fire Fighting – Response recommendations for fire incidents in
which the chemical is involved.Non-Fire Response – Response recommendations for incidents not
involving fire, in which the chemical is involved.Protective Clothing – General recommendations.First Aid – Recommended first aid treatment for people exposed to
the chemical.

Regulatory Names – Names under which this substance is regulated
under Federal laws such as CERCLA (“Superfund”), EPCRA (“Title III of
SARA”), RCRA, and the Clean Air Act of 1990.CAA RMP – Indicates whether this chemical has been listed as a
toxic, flammable, or explosive hazardous substance under Section 112(r) of
the Clean Air Act. For listed chemicals, displays the Threshold Quantity
listed in the Act. A facility is subject to the accidental release
prevention provisions of the Act if more than the Threshold Quantity of at
least one listed chemical is in a process at the facility.CERCLA – Indicates whether this chemical is listed as a hazardous
substance under CERCLA (40 CFR 302). For listed chemicals, displays the
Reportable Quantity (RQ) listed in CERCLA. A facility must report spilled
quantities in excess of the RQ to Federal, state, and local governments.EPCRA 302 EHS – Indicates whether this chemical is an Extremely
Hazardous Substance (EHS), identified by the U.S. Environmental Protection
Agency as an acute inhalation toxic threat, and listed under EPCRA. For
listed chemicals, displays the Threshold Planning Quantity listed in 40
CFR 355. When the storage quantity of an EHS chemical at a facility
exceeds this threshold, the reporting, community right-to-know, and
emergency planning requirements of EPCRA must be met.

 

TRI (EPCRA 313) – Indicates whether this chemical is included in a
list of toxic chemicals covered under Section 313 of EPCRA. Facilities
manufacturing, storing, or using at least one Section 313 chemical may be
required to submit annual reports of the amount of each chemical released
into the environment, either routinely or by accident (see 40 CFR 372).

RCRA chemical code – Four-character identification code assigned to
this substance under the Resource Conservation and Recovery Act of 1976 (RCRA).