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Chemical Hazards

Science, Grade 8

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3 Fire 2 Reactivity Specific Hazard 1 Health 3 2 1 W W FLAMMABLE LIQUID 3 FIRE HAZARD Flash Points: 4 – Below 73º F 3 – Below 100º F 2 – Below 200º F 1 – Above 200º F 0 – Will not burn REACTIVITY 4 – May detonate 3 – Shock and heat may detonate 2 – Violent chemical change 1 – Unstable if heated 0 – Stable HEALTH HAZARD 4 – Deadly 3 – Extreme danger 2 – Hazardous 1 – Slightly hazardous 0 – No hazard SPECIFIC HAZARD Oxidizer - OX Acid - ACID Corrosive - CORR Use NO WATER - Radioactive - www.newpathlearning.com © Copyright NewPath Learning. All Rights Reserved. 94-4624 Chemical Hazards NFPA Chemical Hazard Label Flammables Flammable liquids and vapors are the most common fire hazard in the laboratory. Fires need air, flammable gas or vapor and an ignition source. Carcinogens Any chemical that can cause cancer. This category includes known or suspected carcinogens such as formaldehyde and benzene among many others. Corrosives Corrosives are chemicals such as strong acids, bases and metallic salts that cause severe chemical burns to living tissue at the site of contact. Corrosive chemicals can affect the skin, eyes, respiratory tract and gastrointestinal tract. Explosive Substances Explosive substances are chemicals that decompose at an extremely rapid and violent rate causing an explosion by producing large volumes of gas. Examples of such substances include ammonium nitrate and isopropyl ether among others. Oxidizers Oxidizers are chemical compounds which have the ability to act as an oxygen source and are especially hazardous during a fire. Such substances present a fire and explosion risk when in contact with organic or combustible materials. Sensitizers/Irritants Sensitizers and Irritants are chemicals that cause irritation and inflammation to living tissue with repeated use. Solvents Solvents are considered fire hazards. Examples include acetone, diethyl ether and ethanol. Precautions include storage in a flammable liquid cabinet and usage under a fume hood. Toxic Chemicals These are chemicals that affect key life processes and can cause death or permanent injury to humans or animals. Water Reactive Chemicals “Water-reactive” chemicals react with water to release a gas that is either flammable or presents a health hazard. Examples include aluminum powder, magnesium powder, sodium, potassium and zinc powder among many others. The National Fire Protection Association (NFPA) has developed a color coded, numerical system for representing the health, flammability and reactivity hazards of chemicals. The degree of hazard is rated from 0 to 4.

3 Fire 2 Reactivity Specific Hazard 1 Health 3 2 1 W FIRE HAZARD Flash Points: 4 – _________________________ 3 – _________________________ 2 – _________________________ 1 – _________________________ 0 – _________________________ REACTIVITY 4 – _________________________ 3 – _________________________ 2 – _________________________ 1 – _________________________ 0 – _________________________ HEALTH HAZARD 4 – _________________________ 3 – _________________________ 2 – _________________________ 1 – _________________________ 0 – _________________________ SPECIFIC HAZARD _________________________ _________________________ _________________________ _________________________ _________________________ www.newpathlearning.com © Copyright NewPath Learning. All Rights Reserved. 94-4624 Chemical Hazards NFPA Chemical Hazard Label Flammables ___________________________________________________________________________________________ ___________________________________________________________________________________________ Carcinogens ___________________________________________________________________________________________ ___________________________________________________________________________________________ Corrosives ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ Explosive Substances ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ Oxidizers ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ Sensitizers/Irritants ___________________________________________________________________________________________ ___________________________________________________________________________________________ Solvents ___________________________________________________________________________________________ ___________________________________________________________________________________________ Toxic Chemicals ___________________________________________________________________________________________ ___________________________________________________________________________________________ Water Reactive Chemicals ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ The National Fire Protection Association (NFPA) has developed a color coded, numerical system for representing the health, flammability and reactivity hazards of chemicals. The degree of hazard is rated from 0 to 4. FLAMMABLE LIQUID 3 \|xiBAHBDy01815lz[

Chemical Hazards

Science, Grade 8

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