A substance that causes significant harm to humans in small quantities
What is toxicity determined by?
Dos and duration of exposure
List a chemical that is a health hazard for each catagory.
- 4 - Hydrogen cyanide
- 3 - Phenol
- 2 - Caffeine
- 1 - Acetone
- 0 - Distilled water
What do each of the number ratings for a health hazard mean?
- 4 - Very short exposure could cause death or major injury despite prompt medical treatment
- 3 - Short exposure could cause serious injury despite prompt medical treatment
- 2 - Intense or prolonged exposure could cause serious injury, short exposure can ge medically treated
- 1 - Exposure may cause irritation or minor injury even without medical treatment
- 0 - No significant hazard
What does combustible mean?
Something can burn
What does flammable mean?
Something can easily be ignited and burns readily
List an example for each number rating of a flammable substance.
- 4 - Propane
- 3 - Ethyl alcohol
- 2 - Diesel fuel
- 1 - Mineral oil
- 0 - Water
What do each of the number ratings for a flammable substance mean?
- 4 - Highly flammable substances or ones that readily form explosive mixtures with air
- 3 - Substances that can be ignited under almost all ambient conditions
- 2 - Substances that must be heated moderately to ignite
- 1 - Substances that must be heated significantly to ignite
- 0 - Substances thhat will not burn (can be used to extinguish fires)
What is reactivity?
How easily a substance reacts and generates a lot of energy
List examples for each reactivity rating.
- 4 - Nitroglycerine
- 3 - Potassium
- 2 - Lithium
- 1 - Calcium oxide
- 0 - Sand
What does each number for reactivy mean?
- 4 - Substances that reaily detonate or explode at normal conditions
- 3 - Substances that can detonate or explode but require a strong initiating force, or substances that react violently with water
- 2 - Unstable substances that undergo violent chemical reactions but do not detonate, or substances that react significantly with water
- 1 - Stable substances that become unstable at high temperatures or pressures, or substances that react mildly with water
- 0 - Stable substances that do not become unstable or react with water
What does the diamond symbol look like?
What is required in an MSDS?
- Physical properties
- Fire and explosion data
- Reactivity data
- Health hazard info.
- Spill, leak, and clean up info.
- Personal protection