Flash point below 73 degrees F and boiling point below 100 degrees F.
Flash point below 73 degrees F and boiling point at or above 100 degrees F.
Flash point at or above 73 degrees F and below 100 degrees F.
Product packaged in an aerosol container and can release a flammable material.
Gas that at ambient temperature and pressure forms a flammable mixture with air at a concentration of 13% by volume or less; or a gas that at ambient temperature and pressure forms a range of flammable mixtures with air greater than 12% by volume, regardless of the lower limit.
Minimum and maximum concentrations of flammable gas or vapor between which ignition occurs.
Liquid that gives off vapors that can be ignited at room temperature; liquid with flash point below 100F.
Solid that will ignite readily and continue to burn or is liable to cause fires under ordinary conditions or during transportation through friction or retained heat from manufacturing or processing and that burns so vigorously and persistently as to create a serious transportation hazard.
Occurs when a trail of flammable material is ignited by a distant spark or ignition source. The flame then travels along the trail of the material back to its source.
Temperature at which a liquid will give off enough flammable vapor to ignite. There are several flash point test methods, and flash points may vary for the same material depending on the method used, so the test method is indicated when the flash point is given.
Fire fighting material consisting of small bubbles of air, water, and concentrating agents. Foam will put out a fire by blanketing it, excluding air and blocking the escape of volatile vapor.
Visible suspension of fine droplets in a gas.
Potential occurrence such as equipment failure, rupture of containers, or failure of control equipment which could result in an uncontrolled release of a hazardous chemical.
The scientific expression of the chemical composition of a material (e.g.,water H2O, sulfuric acid H2SO4, sulfur dioxide is SO2).
Temperature at which a material changes its physical state from liquid to solid. This information is important because a frozen material may burst its container or the hazards could change.
Damage to tissue from exposure to extreme cold or contact with extremely cold liquids or solids.
Gas, liquid, solid, vapor, fume, mist, fog, or dust that escapes from process equipment or a product.
|FULL PROTECTIVE CLOTHING:|
Fully protective gear that keeps gases, vapor, liquid, and solids from any contact with skin and prevents them from being inhaled or ingested.
Airborne suspension consisting of minute solid particles arising from the heating of a solid. This heating is often accompanied by a chemical reaction where the particles react with oxygen to form an oxide.
Gram. Metric unit of weight.
Death of tissue combined with putrefaction.
Formless fluid that occupies the space of its enclosure. Can settle to the bottom or top of an enclosure when mixed with other materials. Can be changed to its liquid or solid state only by increased pressure and decreased temperature.
Washing out of the stomach using a tube and fluids.
Irritation of lining of stomach which may be evident as stomach pains, vomiting, or diarrhea, etc.
Inflammation of the stomach and intestine.
Stomach and intestine as a functional unit.
Feeding by means of a stomach tube.
Removal of contaminated air and its replacement with clean air from general workplace area as opposed to local ventilation, which is specific air changing in immediate air of a contamination source.
Designation or identification to identify a chemical by other than its chemical name.
Pertaining to or carried by genes. Hereditary.
Inflammation of the gums.
Metric unit of mass weight. One U.S. ounce is about 28 grams and one pound is 454 grams.
Expression of dose used in oral and dermal toxicology testing to indicate the grams of substance dosed per kilogram of animal body weight.
Safety practice to conduct electrical charge to ground, preventing igniting sparks of a material.
Breaking down or separation of a substance into its constituent parts, elements, or into simpler compounds accompanied by the release of heat, gas, or hazardous materials.
Any chemical whose presence or use is a physical hazard or a health hazard.
Hazardous substances that make up a mixture.
Any substance or mixture of substances having properties capable of producing adverse effects on the health or safety of a human being.
|HAZARDOUS MATERIALS IDENTIFICATION SYSTEM (HMIS):|
Developed by the NPCA to provide information on health, flammability, and reactivity hazards that are encountered in the workplace. A number is assigned to a material indicating the degree of hazard, from 0 for the least up to 4 for the most severe. Letters are used to designate personal protective equipment.
|HAZARDOUS WASTE NUMBER:|
Identification number assigned by the EPA, per RCRA law, to identify and track hazardous wastes.
Chemical from which acute or chronic health effects may occur in exposed individuals.
The blood-forming mechanism of the human body.
Presence of blood in the urine.
Separation of the hemoglobin from red blood corpuscles.
Pertaining to the liver.
A substance that causes injury to the liver.
A chemical in any of the following categories:
|A chemical with a median lethal dose (LD50) of 50 milligrams or less per kilogram of body weight when administered orally to albino rats between 200 and 300 grams each.||A chemical with a median lethal dose (LD50) of 200 milligrams or less per kilogram of body weight when administered by continuous contact for 24 hours (or less if death occurs within 24 hours) with the bare skin of albino rabbits weighing between 2 and 3 kilograms each.||A chemical that has a median lethal concentration (LC50) in air of 200 parts per million by volume or less of gas or vapor, or 2 milligrams per liter or less of mist, fume, or dust when administered by continuos inhalation for 1 hour (or less if death occurs within 1 hour) to albino rats weighing between 200 and 300 grams each.||HYDROCARBON:|
Organic compound composed only of carbon and hydrogen. Petroleum, natural gas, and coal are the main sources of hydrocarbons for industry.
Materials having large molecules that absorb and retain water, causing them to swell and frequently to gel.
Readily adsorbing available moisture in any form.
Congestion of blood in a body part.
Self-igniting upon contact of its components without a spark or external aid.
Calcium deficiency of the blood.
Insufficient oxygen, especially applied to body cells.
Lowest temperature at which a combustible material will catch fire in air and will continue to burn independently of the source of heat when heated.
Ratings corresponding to the following definitions are derived from the test methods and categories of toxicity described in 16 CFR 1500.3.
The probable lethal concentration of the undiluted product to 50% of the test animals (LC50) is greater than 200 milligrams per liter by volume when inhaled continuously for one hour or less.
The probable lethal concentration of the undiluted product to 50% of the test animals (LC50) is greater than 2 milligrams and less than or equal to 200 milligrams per liter by volume when inhaled continuously for one hour or less.
The probable lethal concentration of the undiluted product to 50% of the test animals (LC50) is less than or equal to 2 milligrams per liter by volume when inhaled continuously for one hour or less.
The hazardous chemical will be under the control of and used only by the person who transfers it from a labeled container and only within the work shift in which it is transferred.
|IMMEDIATELY DANGEROUS TO LIFE AND HEALTH (IDLH):|
Maximum concentration from which one could escape within 30 minutes without any escape-impairing symptoms or any irreversible health effects.
First business with employees within the Customs Territory of U.S. which receives hazardous chemicals produced in other countries for the purpose of supplying them to distributors or employers within U.S.
Material that does not allow another substance to pass through or penetrate it.
Materials which could cause dangerous reactions from direct contact with one another.
Anything other than the active ingredient in a product; not having active properties.
Capable of being easily set on fire and continuing to burn, especially violently.
Series of reactions produced in tissue by an irritant, injury, or infection. Characterized by swelling and redness caused by an influx of blood and fluids
Taking in of a substance through the mouth.
Breathing in of a substance in the form of a gas, vapor, fume, mist, or dust.
Chemical which is added to another substance to prevent an unwanted chemical change from occurring.
Compounds derived from other than vegetable or animal sources; generally do not contain carbon atoms.
Incapable of being dissolved in a liquid.
Scarring of the lungs.
Pertaining to the iris of the eye.
Inflammation of both the iris and the ciliary body of the eye.
Substance which, by contact in sufficient concentration for a sufficient period of time, will cause an inflammatory response or reaction of the eye, skin, or respiratory system.
Compounds that have same molecular weight and atomic composition but differ in molecular structure.
Yellowish discoloration of tissue, whites of the eyes, and bodily fluids with bile pigment caused by any of several pathological conditions that interrupt the liver's normal production and discharge of bile.
Condition marked by excessive production or accumulation of ketone bodies in the body caused by disturbed carbohydrate metabolism.
Metric unit of weight; about 2.2 pounds.
|Lethal Concentration ||LC50 - Median Lethal Concentration |
The atmospheric concentration found to be lethal to 50 percent of a group of test animals exposed for the specified time period.
|LD-50 - Median Lethal Dose |
The dose found to be lethal in 50 percent of a group of test animals when administered by the specified route, e.g., oral or dermal.
Lethal concentration low. The lowest concentration of a substance in air reported to have caused death in humans or animals. The reported concentrations may be entered for periods of exposure that are less than 24 hr (acute) or greater than 24 hr (subacute and chronic).
Lethal dose low. The lowest dose of a substance introduced by any route, other than inhalation, reported to have caused death in humans or animals.
Any written, printed, or graphic sign or symbol displayed on or affixed to containers of hazardous chemicals. Should contain identity of the material, appropriate hazard warnings, and name and address of the chemical manufacturer, importer, or other responsible party.
|LABORATORY SCALE (ACTIVITY):|
The work involves containers of substances used for reactions and transfers that are designed for easy and safe handling by one person. Workplaces that produce commercial quantities of materials are excluded from the definition of "Laboratory."
Secretion and discharge of tears.
Material that produces tears.
Disposal of trash and waste products at controlled location that is sealed and buried under earth.
Time that elapses between exposure and the first manifestations of disease or illness.
Washing of a hollow organ, such as the stomach, using a tube and fluids.
Abnormal change, injury, or damage to tissue or to an organ.
Progressive, malignant disease of the blood forming organs.
Mass of chronically inflamed tissue that is usually infective.
Chronic condition caused by the aspiration of oily substances into the lungs.
Toxic or irritation effects which occur at the site of contact with a chemical or substance.
Drawing off and replacement of contaminated air directly from its source.
|LOWER EXPLOSIVE (FLAMMABLE) LIMIT (LEL):|
Lowest concentration (lowest percentage of the substance in air) that will produce a flash of fire when an ignition source (heat, electric arc, or flame) is present.
|MAAC - Maximum Acceptable Ambient Concentration |
The maximum allowable twenty-four hour average concentration, in ambient air, of a toxic air contaminant.
Feeling of general discomfort, distress, or uneasiness.
Temperature at which a solid substance changes to a liquid state. For mixtures, a melting range may be given.
Chemical and physical processes whereby the body functions.
Transmission of a disease from one part of the body to another.
Presence of methemoglobin in the bloodstream caused by the reaction of materials with the hemoglobin in red blood cells that reduces their oxygen-carrying capacity.
Milligram (1/1000, 10-3, of a gram).
Milligram per kilogram. Dosage used in toxicology testing to indicate a dose administered per kg of body weight.
Milligram per cubic meter of air. mg/m3 = ppm x MW/24.45 at 25 C.
One-millionth (10-6) of a gram.
One-millionth (10-6) of a meter; often referred to as a micron.
1/1000 of a meter.
Extent to which liquids or gases can be mixed or blended.
Suspended liquid droplets in the air generated by condensation from the gaseous to the liquid state or by mechanically breaking up the liquid by splashing or atomizing.
Heterogeneous association of materials that cannot be represented by a chemical formula and that does not undergo chemical change as a result of interaction among the mixed materials.
Milliliter. 1/1000 of a liter. A metric unit of capacity, for all practical purposes equal to 1 cubic centimeter. One cubic inch is about 16 ml.
A measure of pressure in millimeters of a mercury column above a reservoir, or difference of level in a U-tube.
Quantity of a chemical substance that has a weight in a unit numerically equal to the molecular weight.
The sum of the atomic weights of the atoms in a molecule.
Millions of particles per cubic foot of air, based on impinger samples counted by light-field techniques (OSHA).
The mucous-secreting lining that lines the hollow organs of the body.
Substance or agent capable of altering the genetic material in a living cell.
Normal.Used as a prefix in chemical names signifying a straight-chain structure.
Stupor or unconsciousness produced by narcotics or other materials.
Tendency to vomit, a feeling of sickness at the stomach.
Localized death of tissue.
New or abnormal tissue growth that is uncontrollable and progressive.
Poisonous to the kidney.
Inflammation of the nerves.
To render chemically harmless; to return the ph to the neutral level of 7.
Incapable of being easily ignited or burning with extreme rapidity when lighted. Also, a DOT hazard class for any compressed gas other than a flammable one.
A general formula for oxides of nitrogen (NO,NO2). They react with moisture in the respiratory tract to produce acids that corrode and irritate tissue, causing congestion and pulmonary edema. Symptoms of acute exposure can develop over 6 to 24 hours. Chronic exposure to low levels can cause irritation, cough, headache, and tooth corrosion. Exposure to 5 to 50 ppm of NO2 can cause slowly evolving pulmonary edema. Commonly produced by combustion processes, including motor vehicle engines.
Dusts that do not produce significant organic disease or toxic effect from "reasonable" concentrations and exposures.
Spastic, involuntary motion of the eyeballs
Description of the smell of the substance.
Lowest concentration of a substance's vapor, in air, that can be smelled.
|OEL - Occupational Exposure Limit |
The most restrictive eight-hour time weighted average concentration specified for workroom air selected from either the 1986-1987 Threshold Limit Values and Biological Exposure Indices as adopted by the American Conference of Governmental Industrial Hygienists; the Recommended Standards for Occupational Exposure set forth in the July 1985 summary of National Institute for Occupational Safety and Health Recommendations for Occupational Health Standards; or the 1986 Workplace Environmental Exposure Levels set forth by the American Industrial Hygiene Association.
Relating to the sense of smell.
Scanty or low volume of urine.
Impervious to light rays.
Any transfer that at any time involves contact of a moving fluid with the atmosphere, air, or oxygen. Open transfer of flammable liquids, especially Class IA liquids, is dangerous due to the release of flammable vapors into the work area. Since there is a risk of fire or explosion if an ignition source is present, do these transfers only in a hood.
Used in or taken into the body through the mouth.
Ratings corresponding to the following definitions are derived from data obtained from the test methods and categories of toxicity as described in 16 CFR 1500.3.
The probable lethal dose of undiluted product to 50% of the test animals determined from ingestion studies (LD50) is greater than 5 grams per kilogram of body weight.
The probable lethal dose of undiluted product to 50% of the test animals determined from ingestion studies (LD50) is greater than 50 milligrams and less than or equal to 5 grams per kilogram of body weight.
The probable lethal dose of undiluted product to 50% of the test animals determined from ingestion studies (LD50) is less than or equal to 50 milligrams per kilogram of body weight.
Compounds composed of carbon, hydrogen, and other elements with chain or ring structures.
Exposure to a hazardous material beyond the allowable exposure levels.
Reaction in which a substance combines with oxygen provided by an oxidizer or oxidizing agent. An oxidation reaction is always accompanied by an offsetting reduction reaction in which (1) oxygen is removed from a compound; or (2) atoms, molecules, or ions gain electrons.
Dermatitis caused by contact with oxides under poor personal hygienic conditions.
Substance that yields oxygen readily to stimulate the combustion of organic matter.
Chemical or substance that brings about an oxidation reaction.
Irregular, rapid heartbeat.
Sensation of pricking, tinkling, or creeping on the skin that has no objective cause.
Small, separate pieces of an airborne material. Generally, anything that is not a fiber and has an aspect ratio of 3 to 1.
|PARTS PER MILLION (PPM):|
Unit for measuring concentration of a gas or vapor in air. Parts of the gas or vapor in a million parts of air. Also used to indicate the concentration of a particular substance in a liquid or solid.
Percent volatile by volume is the percentage of a liquid or solid (by volume) that will evaporate at an ambient temperature of 70 degrees F (unless some other temperature is specified). Examples: butane, gasoline, and paint thinner (mineral spirits) are 100 percent volatile; their individual evaporation rates vary, but in time, each will evaporate completely.
|PERMISSIBLE EXPOSURE LIMIT (PEL):|
Legally enforced exposure limit for a substance established by OSHA. The PEL indicates the permissible concentration of air contaminants to which nearly all workers may be repeatedly exposed 8 hours a day, 40 hours a week, over a working lifetime (40 years), without adverse effects.
Precautionary measures taken to maintain good health when exposed to harmful materials.
|PERSONAL PROTECTIVE EQUIPMENT (PPE):|
Devices or clothing worn to help isolate a worker from direct exposure to hazardous materials.
Complex mixture of hydrocarbons, liquid at normal ambient conditions, separated from crude oil and other refinery process streams by distillation.
Scale of 0 to 14 representing acidity or alkalinity of aqueous solution. Pure water has pH of 7. Substance in aqueous solution will ionize to various extent giving different concentrations of H+ and OH- ions.
Thick mucous from the respiratory passage.
Intolerance to light.
Means a chemical for which there is scientifically valid evidence that it is a combustible liquid, a compressed gas, explosive, flammable, an organic peroxide, an oxidizer, pyrophoric, unstable (reactive) or water reactive.
Condition of a material (solid, liquid, or gas) at room temperature.
Any substance that is injurious to health and may lead to death when relatively small amounts are taken either internally or externally.
|PRODUCT IDENTIFICATION NUMBER:|
Four-digit number, prefaced by UN or NA, used in Canada under the Transportation of Dangerous Goods Regulation for use by emergency personnel to identify a material in the event of an accident.
Respiratory tract and lung condition caused by inhalation and retention of irritant mineral or metallic particles. An X-ray can detect changes, which include fibrosis.
|POISON, CLASS A:|
DOT term for an extremely dangerous poison such as a poisonous gas or liquid of such a nature that a very small amount of the gas or vapor of the liquid mixed with air is dangerous to life.
|POISON, CLASS B:|
Term for liquid, solid, paste, or semisolid substances other than class A poisons or irritating materials known or presumed by animal tests to be so toxic to man to be a health hazard during transportation.
|POISON CONTROL CENTER:|
Provides medical information on a 24-hour basis for accidents involving ingestion of potentially poisonous materials.
|POLYCHLORINATED BIPHENYL (PCB):|
Pathogenic and teratogenic compound used as a heat transfer medium. It accumulates in tissue.
Chemical reaction in which one or more small molecules combine to form larger molecules. A hazardous polymerization is such a reaction that takes place at a rate that releases large amounts of energy that can cause fires or explosions or burst containers. Materials that can polymerize usually contain inhibitors that can delay the reaction.
Temperature at which a liquid ceases or begins to flow or at which it congeals.
A general term for the several oxides of phosphorus.
Personal protective equipment. Devices or clothing worn to help insulate a worker from direct exposure to hazardous materials. Examples include gloves and respirators.
In front of the heart, stomach.
|PRIMARY SKIN IRRITANT:|
A non-corrosive substance which produces severe skin irritation.
To manufacture, process, formulate, or repackage.
Physical exhaustion, incapacitation.
Presence of protein in the urine.
Pounds per square inch absolute.
Pounds per square inch gauge (i.e., above atmospheric pressure).
Acting on the mind.
Fluid in the lungs.
Chemical decomposition or breaking apart of molecules produced by heating.
Materials that ignite spontaneously in air below 130 degrees F. Occasionally friction will ignite them.
Chemical transformation or change; interaction of two or more substances to form new substance.
Chemical substance or mixture that will vigorously polymerize, decompose, condense, or become self-reactive due to shock, pressure, or temperature. Includes explosive materials, organic peroxides, pressure-generating materials, and water-reactive materials.
Tendency of a substance to undergo chemical reaction with the release of energy.
Substance used in a chemical reaction to produce another substance or to detect its composition.
|RECOMMENDED EXPOSURE LIMIT:|
The highest allowable airborne concentration that is not expected to injure a worker. Expressed as a ceiling limit or as a time weighted average, usually for 10-hour work shift.
Substance that (1) combines with oxygen or (2) loses electrons to the reaction during a reduction reaction.
|REGISTRY OF TOXIC EFFECTS OF CHEMICAL SUBSTANCES:|
Published by NIOSH. Presents basic toxicity data on thousands of materials. Objective is to identify "all known toxic substances" and to reference original studies.
Pertaining to the kidney.
|REPORTABLE QUANTITY (RQ):|
Amount of material that when spilled must be reported to the Federal, State, and local authorities under CERCLA, EPCRA, and the CWA.
|REPRODUCTIVE HEALTH HAZARD:|
Any agent that has a harmful effect on the adult male or female reproductive system or the developing fetus or child.
Breathing system, including the lungs and air passages, as well as the associated system of nerves and circulatory supply.
Devices that will protect the wearer's respiratory system from overexposure by inhalation to airborne contaminants. Respiratory protection is used when a worker must work in an area where he/she might be exposed to concentration in excess of the allowable exposure limit.
Someone who can provide additional information on the hazardous chemical and appropriate emergency procedures, if necessary.
|ROUTES OF ENTRY:|
Means by which material may gain access to the body (inhalation, ingestion, skin contact).
|SAINT ANDREW'S CROSS (X):|
Used in packaging for transport; It means harmful--stow away from foodstuffs.
A tumor that is often malignant.
Superfund Amendments and Reauthorization Act. Signed into law October 17, 1986. Title III of SARA is known as the Emergency Planning and Community Right-to-Know Act of 1986. A revision and extension of CERCLA, SARA is intended to encourage and support local and state emergency planning efforts. It provides citizens and local governments with information about potential chemical hazards in their communities. SARA calls for facilities that store hazardous materials to provide officials and citizens with data on the types (flammables, corrosives, etc.); amounts on hand (daily, yearly); and their specific locations. Facilities are to prepare and submit inventory lists, MSDSs, and tier 1 and 2 inventory forms. The disaster in Bhopal, India in 1987 added impetus to the passage of this law.
Self-contained breathing apparatus.
Tough, white, fibrous covering of the eyeball.
State of immune-response reaction in which further exposure elicits an immune or allergic response. A person previously exposed to a certain material is more sensitive when he experiences further contact with it.
Substance which, on first exposure, causes little or no reaction in man or test animals but which, on repeated exposure, may cause a marked response not necessarily limited to the contact site.
Pneumoconiosis caused by the inhalation of iron particles. Also, tissue pigmentation caused by contact with iron.
Abnormality in the body indicating poisoning or disease which is observable by another person.
Distinctive words on a MSDS which serves to alert the reader to the existence and relative degree of a hazard. Signal words are limited to:
Materials that are: highly toxic; corrosive to living tissue; extremely flammable; or are suspected human carcinogens.
Materials that are: moderately toxic; have severe skin irritation potential; cause allergic skin reactions; or are flammable.
Materials that: have a low order of toxicity; produce only slight to moderate skin irritation; or are combustible.
Condition of massive fibrosis of the lungs causing shortness of breath because of prolonged inhalation of silica dusts.
Ratings corresponding to the following definitions are derived from data obtained from the test methods as described in the CFR 16 1500.41 and or NAS publication 1138 and categories of toxicity as described in 16 CFR 1500.3.
The undiluted product causes no noticeable irritation or causes slight inflammation (edema and erythema skin reaction values of 0 to 1) of intact or abraded skin of rabbits during the study period. Primary irritation index of 0 - 1.9.
The undiluted product causes well-defined inflammation (edema and erythema skin reaction values of 2) during the study period. Primary irritation index of 2 - 4.9.
PRIMARY SKIN IRRITANT:
The undiluted product cause moderate to severe inflammation (edema and erythema skin reaction values of 3 or 4) of the intact or abraded skin of rabbits during the study period. Primary irritation index of 5 or more.
The undiluted product causes visible destruction or irreversible alterations of the tissue structure at the site of contact on intact or abraded skin of rabbits during the study period.
Pourable mixture of solid and liquid.
Dry particles and droplets generated by incomplete combustion of an organic material combined with and suspended in the gases from combustion.
|SOLUBILITY IN WATER:|
Percentage of a material (by weight) that will dissolve in water at ambient temperature.
Uniformly dispersed mixture. Composed of a solvent and a dissolved substance, called the solute.
Substance, usually liquid, in which other substances are dissolved. Water is the most common solvent.|
Fine particles, usually black, formed by combustion consisting chiefly of carbon. Gives smoke color.
Oxides of sulfur where x equals the number of oxygen atoms.
Involuntary, convulsive muscular contraction.
|SPECIFIC CHEMICAL IDENTITY:|
Chemical name, CAS number, or other information that reveals the precise chemical designation of the substance.
Weight of material compared to equal volume of water: expression of density of material.
Ability of a material to remain unchanged. A material is stable if it remains in the same form under expected and reasonable conditions of storage or use.
Short-term exposure limit.
Short-term exposure value.
Inflammation of the mucous membrane of the mouth.
Partial or nearly complete unconsciousness.
Beneath the skin.
Change from the solid to the vapor phase without passing through the liquid phase.
Interaction of materials to give a combined result different from either material alone.
Another name or names by which a material is known.
Acute or chronic adverse health effects which occur in parts of the body removed from the site of exposure to the material.
|TLV - Threshold Limit Value|
Airborne concentration of substances established by the American Conference of Governmental Industrial Hygienists, which represent conditions under which it is believed that nearly all workers may be repeatedly exposed day after day without adverse effect.
Ceiling limit, concentration that should not be exceeded even instantaneously.
Short term exposure limit, maximum concentration for a continuous 15-minute exposure period.
Time-weighted average, concentration for a normal 8-hour work day or 40-hour work week.
Excessively rapid heartbeat, with a pulse rate above 100.
Increased rate of respiration.
|TARGET ORGAN TOXIN:|
Toxic substance that attacks a specific organ of the body.
Substance or agent to which exposure of a pregnant female can result in malformation in the fetus.
|THRESHOLD PLANNING QUANTITY (TPQ):|
Per 40 CFR 302. The amount of material at a facility that requires emergency planning and notification per CERCLA.
Ringing sound in the ears.
Sum of adverse effects resulting from exposure to a material, generally by the mouth, skin, or respiratory tract.