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FERROUS SULFATE Page 5 of 6 GLOSSARY ACGIH is the American Conference of Governmental Industrial mg/m3 means milligrams of a chemical in a cubic meter of air. Hygienists.They publish guidelines called Threshold Limit It is a measure of concentration(weight/volume). Values(TLVs)for exposure to workplace chemicals. A mutagen is a substance that causes mutations.A mutation Acute Exposure Guideline Levels(AEGLs)are established is a change in the genetic material in a body cell. Mutations by the EPA. They describe the risk to humans resulting from can lead to birth defects,miscarriages,or cancer. once-in-a lifetime,or rare,exposure to airborne chemicals. NFPA is the National Fire Protection Association. It classifies Boiling point is the temperature at which a substance can substances according to their fire and explosion hazard. change its physical state from a liquid to a gas. NIOSH is the National Institute for Occupational Safety and A carcinogen is a substance that causes cancer. Health. It tests equipment,evaluates and approves respirators,conducts studies of workplace hazards,and The CAS number is unique,identifying number,assigned by proposes standards to OSHA. the Chemical Abstracts Service,to a specific chemical. NTP is the National Toxicology Program which tests chemicals CFR is the Code of Federal Regulations,which are the and reviews evidence for cancer. regulations of the United States government. OSHA is the federal Occupational Safety and Health A combustible substance is a solid, liquid or gas that will burn. Administration,which adopts and enforces health and safety standards. A corrosive substance is a gas, liquid or solid that causes destruction of human skin or severe corrosion of containers. PEOSHA is the New Jersey Public Employees Occupational Safety and Health Act,which adopts and enforces health and DEP is the New Jersey Department of Environmental safety standards in public workplaces. Protection. Permeated is the movement of chemicals through protective DOT is the Department of Transportation,the federal agency materials. that regulates the transportation of chemicals. ppm means parts of a substance per million parts of air. It is a EPA is the Environmental Protection Agency,the federal measure of concentration by volume in air. agency responsible for regulating environmental hazards. Protective Action Criteria(PAC)are values established by ERG is the Emergency Response Guidebook. It is a guide for the Department of Energy and are based on AEGLs and emergency responders for transportation emergencies ERPGs. They are used for emergency planning of chemical involving hazardous substances. release events. Emergency Response Planning Guideline(ERPG)values A reactive substance is a solid, liquid or gas that releases provide estimates of concentration ranges where one energy under certain conditions. reasonably might anticipate observing adverse effects. STEL is a Short Term Exposure Limit which is usually a 15- A fetus is an unborn human or animal. minute exposure that should not be exceeded at any time during a work day. A flammable substance is a solid,liquid,vapor or gas that will ignite easily and burn rapidly. A teratogen is a substance that causes birth defects by damaging the fetus. The flash point is the temperature at which a liquid or solid gives off vapor that can form a flammable mixture with air. UEL or Upper Explosive Limit is the highest concentration in air above which there is too much fuel(gas or vapor)to begin a IARC is the International Agency for Research on Cancer,a reaction or explosion. scientific group. Vapor Density is the ratio of the weight of a given volume of Ionization Potential is the amount of energy needed to one gas to the weight of another(usually Hydrogen),at the remove an electron from an atom or molecule. It is measured same temperature and pressure. in electron volts. The vapor pressure is a force exerted by the vapor in IRIS is the Integrated Risk Information System database on equilibrium with the solid or liquid phase of the same human health effects that may result from exposure to various substance. The higher the vapor pressure the higher chemicals,maintained by federal EPA. concentration of the substance in air. LEL or Lower Explosive Limit, is the lowest concentration of a combustible substance(gas or vapor)in the air capable of continuing an explosion.