Reactivity - The relative ability of a substance to undergo chemical change by combining with another substance or by breaking down. Certain conditions such as heat and light may make a substance more reactive. An explosion is a very rapid reaction.
Sensitizer - Repeated exposure may cause a marked response not necessarily limited to the site of contact.
Solubility - The amount of a substance that can be dissolved in a solvent usually water.
Solvent - A liquid in which other substances are dissolved. Water is a common solvent.
Stel - Short-term exposure limit (often 15 minutes); a TLV.
Teratogen - Causes growth abnormalities in the fetus.
TLV - Threshold Limit Value; the airborne concentration of a substance calculated to be safe for most workers. The TLV is measured in units of parts per million (ppm) or milligrams per cubic meter (mg/m3). The PEL, STEL and TWA are types of TLV. Toxicity - The capacity of a substance to produce a harmful effect when the substance has reached a sufficient concentration at a certain site in the body.
Toxic Substance - A substance that can cause acute or chronic injury.
TWA - Time weighted average. The TLV for an eight-hour workday.
MOLLY MAID Safety Manual
Page 58
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