Test 4 Hazmat Terms

A substance or material, including a hazardous substance, that has been determined by the Secretary of Transportation to be capable of posing an unreasonable risk to health, safety, and property when transported in commerce, and which has been so designated.

Any chemical that must be reported to the appropriate authorities, if released, above the threshold reporting quantity. The H.S. are listed and identified in Title III of the Superfund Amendments and Reauthorization Act of 1986 (SARA) This agency regulates HAZMAT

• Any chemical that is a health hazard or a physical hazard. • Any chemical that would be a risk to employees if they were exposed in the workplace • Covers a broader group of chemicals other than chemical terms

Temperature at which a liquid changes to a gaseous state

Pressure explosion involving flammable liquids and gases

• Similar to a BLEVE but occurs with nonflammable products. • Will not have the characteristic fireball.

The amount of a product compared to the amount of water present

• Indicates the concentration of hydrogen ions in materials being tested. • Unit of measurement is the pH scale. • pH scale runs 0 to 14 • 0 - 6 is an acid • 8 – 14 is a base • 7 is considered to be neutral

• Refers to gases converted to liquids for storage and transportation. • Substances at temperatures below -130o F. or lower.

Operation to keep hazardous materials in as small an area as possible

Operations designed to keep product in the container itself.

Substance that speeds up a chemical reaction, but is not consumed by the reaction.

minimum temperature at and above which vapor of the substance cannot be liquefied no matter how much pressure is applied

the pressure that must be applied to bring a gas to its liquid state at is critical temperature.

The amount of gas (vapor) produced by a given volume of liquid at a given temperature.

A chemical reaction that absorbs heat.

A chemical reaction that evolves (releases) heat

• The percentage of flammable gas vapor in air. • Consists of a lower limit (LEL) and upper limit (UEL).

Materials which ignite on contact with each other; often a fuel and an oxidizer

The tendency of a substance to undergo chemical reaction, either by itself or with other materials, and to release energy, i.e. organic peroxides

Temperature at which a solid becomes a liquid.

The percentage of a material (by weight) that will dissolve in water at ambient temperature

Liquids that dissolve into each other

Liquids that do not readily dissolve into each other