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How to Read a MSDS

How to Read a MSDS. What does MSDS stand for?. Material Safety Data Sheet. MSDS Practice Worksheet. Chemical Name CAS# is an identifying number for each substance Hazards** Very important to read before using!!. MSDS Practice Worksheet. Other topics may include First-aid measures

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How to Read a MSDS

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  1. How to Read a MSDS

  2. What does MSDS stand for? • Material Safety Data Sheet

  3. MSDS Practice Worksheet • Chemical Name • CAS# is an identifying number for each substance • Hazards** • Very important to read before using!!

  4. MSDS Practice Worksheet • Other topics may include • First-aid measures • Fire fighting measures • Handling and Storage • Special personal protection requirements • Physical & Chemical Properties • Reactivity • Toxicology • Disposal Considerations • Other information

  5. MSDS Terms • Acute – short term exposure or related health effect lasting for min, hrs, or days • Chronic – long term exposure or related health effect lasting for months or years

  6. MSDS Terms • TWA – time weighted average • average concentration workers can be exposed to for 8hr/day and 40hr/week without harmful effects • PEL – Permissible Exposure Limit • the U.S. legal exposure limit to a chemical

  7. MSDS Terms • OSHA – Occupational Safety and Health Administration • IUPAC - International Union of Pure and Applied Chemistry

  8. MSDS Terms • LD50 – Lethal Dose 50% • the amount of a chemical, given all at once, which causes the death to 1/2 of test animal group • LC50 – Lethal Concentration 50% • The concentration of a chemical in air which causes the death to 1/2 of test animal group

  9. MSDS Terms • Carcinogen – a chemical substance which induces cancer or increases its incidence • Teratogen - a substance which can cause birth defects

  10. MSDS Practice Worksheet • Each group has a different chemical MSDS, complete the rest of the worksheet using the MSDS form for your chemical

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