According to the US Occupational Safety and Health Administration ( OSHA), hazardous chemicals are defined
as any chemical that can cause one or more hazards, based on the following factors:
1. Type of chemicals
2. Concentration of chemicals
3. The exposure site
4. Exposure pathways. Exposure to chemicals can be as follows:
A inhalation. B. skin contact C ingestion
How to cope with chemical hazards
1. Follow safety rules when storing the chemicals
a) Do not store chemicals with reactive substances.
b) Avoid using containers of high risk chemicals for other purposes.
c) Containers of chemicals must be made from unbreakable or non reactive substances.
2. Follow safety rules when using
A. Read the instructions on labels carefully
B. Wear protective clothing.
c. Make sure the container is not damaged and is used correctly.
3 . Follow the rules of chemical hazards control
A. Containment B Ventilation C Substitution
SAFETY RULES IN CHEMISTRY LABORATORIES
There must be signs and notices
There must be safety devices.
The facility is free of hazardous substances.
A first aid box is provided.
A functioning fire alarm
Enough functioning fire extinguishers
Do not stack heavy items on high places
Undamaged gas valves and pipes.
Containers are tightly closed and properly tagged.
All materials must be properly and safely stored.
Keep flammable and hazardous materials in fire resistant areas.
Personal safety devices.
Emergency exits signs.
Emergency exits must be open and clear from obstruction
A backup power supply in case of emergency.
Safe storage of gas sources used in laboratories.