Unit 1 – Chemistry WHIMIS – MSDS Science 1206 Unit 1 – Chemistry WHIMIS – MSDS

WHMIS: What does it mean? WHIMIS Song Workplace Hazardous Materials Information System There are 3 parts to WHMIS: 1. Labels: alert worker to the identity and dangers of the product and to basic safety precautions 2. Material Safety Data Sheets (MSDS): technical documents which provide detailed hazard and precautionary information 3. Education/Training: includes how WHMIS works, hazards of controlled substances, procedures for safe storage, use, and disposal

Hazardous Materials: 6 Classes A. Compressed Gas B. Flammable & Combustible Material C. Oxidizing Material D. Poisonous & Infectious Material (three subclasses) E. Corrosive Material F. Dangerously Reactive Material

A. Compressed Gas Explosion danger Contents under high pressure. Cylinder may explode or burst when heated, dropped or damaged compressed air, carbon dioxide, propane, oxygen, ethylene oxide, and welding gases

B. Flammable & Combustible Material Potential fire hazard May catch fire when exposed to heat, spark or flame. May burst into flame spontaneously. Hydrogen Methane Propane Benzene Gasoline Turpentine

C. Oxidizing Material May burn skin or eyes upon contact May cause fire or explosion when in contact with wood, fuels or other combustible material. May burn skin or eyes upon contact hydrogen peroxide solutions (8% to 27.5% by weight), silver nitrate  Some chemicals can cause other materials to burn by supplying oxygen. Oxidizers do not usually burn themselves but they will either help the fire by providing more oxygen or they may cause materials that normally do not burn to suddenly catch on fire (spontaneous combustion).

D. Poisonous & Infectious Material (three subclasses) Division 1: Immediate and Serious Toxic Effects Poisonous substance. A single exposure may be fatal or cause serious or permanent damage to health. carbon monoxide, sodium cyanide, sulphuric acid

D. Poisonous & Infectious Material (three subclasses) Division 2: Other Toxic Effects Poisonous substance that is not immediately dangerous to health. May cause skin or eye irritation. Repeated exposure may cause cancer, birth defects, or other permanent damage. Asbestos fibres, mercury, acetone

D. Poisonous & Infectious Material (three subclasses) Division 3: Biohazardous Infectious Material  May cause disease or serious illness.  Drastic exposures may result in death. AIDS, Hepatitis B, Salmonella, ebolia

E. Corrosive Material Can cause severe eye and skin irritation upon contact Can cause burns to eyes, skin or respiratory system Harmful if inhaled sulphuric acid, HCl, ammonia

F. Dangerously Reactive Material Very unstable May react violently causing explosion, fire or release of toxic gases, when exposed to light, heat, vibration or extreme temperatures ethyl acrylate, vinyl chloride Radon, platonium

WHMIS Labels Required by WHMIS Laws Act as a “first alert” to the hazards associated with using a substance Two main types are Supplier and Workplace Labels

Hazard Symbols Product Identifier WHIMIS Video Risk Phrases Physical Characteristics Precaution Measures First Aid Reference to MSDS Supplier Identifier

What are MSDS for? MSDS’s are only required for materials that are hazardous Physical Hazard: evidence that the chemical is a combustible liquid, compressed gas, explosive, flammable, an organic peroxide, an oxidizer, pyrophoric, unstable or water reactive Health Hazard: evidence shows that the chemical leads to acute or chronic health effects Includes chemicals which are carcinogens, toxic, irritants, corrosives, sensitizers, hepatotoxins, nephrotoxins, neurotoxins, agents which damage the lungs, skin, eyes or mucous membranes

What information is required on a Material Safety Data Sheet (MSDS) What information is required on a Material Safety Data Sheet (MSDS)? – 9 Sections Chemical Identity: Name of the product. Manufacturer’s Information: Name, address, phone number and emergency phone number of the manufacturer. Hazardous Ingredients/Identity Information: List of hazardous chemicals. Depending on the state, the list may contain all chemicals even if they are not hazardous, or only those chemicals which have OSHA standards. Since chemicals are often known by different names, all common (trade) names should be listed. The OSHA Permissible Exposure Limit (PEL) for each hazardous ingredient must be listed.

Physical/Chemical Characteristics: Boiling point, vapor pressure and density, melting point, evaporation rate, etc. Fire and Explosion Hazard Data: Flash point, flammability limits, ways to extinguish, special firefighting procedures, unusual fire and explosion hazards. Reactivity Data: How certain materials react with others when mixed or stored together. Health Hazard Data: Health effects (acute= immediate; chronic= long-term), ways the hazard can enter the body (lungs, skin or mouth), symptoms of exposure, emergency and first aid procedures.

Precautions of Safe Handling and Use: What to do in case materials spill or leak, how to dispose of waste safely, how to handle and store materials in a safe manner. Control Measures: Ventilation (local, general, etc.), type of respirator/filter to use, protective gloves, clothing and equipment, etc.

MSDS - What is it? Material Safety Data Sheet Provides workers and emergency personnel with the proper procedures for handling and working with a particular substance MSDS’s include: physical data (melting point, boiling point etc), toxicity, health effects, first aid, reactivity, storage, disposal, protective equipment and spill procedures

MSDS - Video