General Chemical Safety
&
Handling of Chemicals in
Labs
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Chemical Safety and Handling: Understanding Labels and MSDS for Safe Use in Labs, Assignments of Materials science
Essential information on general chemical safety and handling procedures in laboratories. It covers the importance of reading labels and Material Safety Data Sheets (MSDS), understanding hazard symbols and precautionary measures, and using protective equipment. The document also explains the significance of various signal words and color codes on labels, and provides guidelines for handling and storing chemicals safely.
Typology: Assignments
2019/2020
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General Chemical Safety
Handling of Chemicals in
Labs
Staying safe means that you…
- (^) Read labels on containers of chemicals
- (^) Read Material Safety Data Sheets (MSDS)
- (^) Handle chemicals with Care
- (^) Use correct Protective clothing & equipment
- (^) Remember Emergency Procedures
Health Hazards on a Chemical Label
- (^) Carcinogen (Cancer Causing)
- (^) Highly toxic agent
- (^) Toxic agent
- (^) Reproductive hazard
- (^) Irritant
- (^) Corrosive
- (^) Sensitizer
- (^) Hepatotoxin (Toxic to Liver)
- (^) Nephrotoxin (Toxic to Kidneys)
- (^) Neurotoxin (Toxic to Nervous System)
Typical Precautionary Measures on a Label
- (^) Do not breathe vapors
- (^) Use in well-ventilated areas
- (^) Keep container closed when not in use
- (^) Avoid contact with skin
- (^) Wash thoroughly with soap and water after handling
Common Signal Words on Labels
- (^) Danger – Can cause immediate
serious injury or death
- (^) Warning – Can cause potentially
serious injury or death
- (^) Caution – Can cause potentially
moderate injury
Special Symbols Used on Labels Helps you recognize kind of hazard a chemical could present if you are not careful
- (^) Toxicity
- (^) Corrosivity (acids and bases)
- (^) Ignitability (flammable solvents and certain solids)
- (^) Reactivity (sodium and various water- reactive reagents)
JLF 9/05 (^10) Mandatory signs – BLUE sign with WHITE icon
JLF 9/05 (^11) Warning signs – YELLOW triangle with BLACK icon
Color and Number Coded Label Systems 3 4 2 Colors represent kind of hazard
- (^) Red = fire
- (^) Yellow = instability
- (^) Blue = health
- (^) Black/White = specific hazard & personal protection Numbers show degree of hazard
- (^) 0 = Minimal
- (^) 1 = Slight
- (^) 2 = Moderate
- (^) 3 = Serious
- (^) 4 = Severe NFPA-type label
Color and Number Coded Label Systems NFPA-type labels 3 4 2 COR Black = specific hazard
- (^) OX = Oxidizer
- (^) ACID = Acid
- (^) ALK = Alkali
- (^) COR = Corrosive
- (^) W = Use no water
- (^) Other symbols:
- JLF 9/05
MSDS (cont’d)
Specific possible health hazards:
- (^) Acute poisoning (rapid assimilation of substance, i.e., carbon monoxide)
- (^) Chronic poisoning (prolonged exposure, i.e., lead poisoning)
- (^) Cumulative poisons (numerous chronic exposures, i.e., heavy metals)
- (^) Substances in combination (synergistic effect, i.e., exposure to alcohol and chlorinated solvents)
- (^) Emergency/first-aid procedures to follow
- (^) Accidental Release Measures What to do if substance spills and leaks How to correctly dispose of substance Equipment/procedures for cleaning up spills and leaks MSDS (cont’d)
MSDS (cont’d) Handling and Storage
- (^) How to handle and store substance safely
- (^) Any other precautions (i.e., grounding containers during transfer of flammables)