General rules for handling chemicals are
Wear the appropriate personal protective gear (if required) to prevent exposure to contaminated surfaces or equipment (eye, respiratory, or skin exposure) while handling hazardous chemicals. Know the signs of poisoning and how to administer first aid. Inform the supervisor right away if there are any symptoms of illness or exposure.
If we asked you to name a chemical hazard, you probably came up with asbestos, bleach, arsenic, or lead from public awareness campaigns. Even if you don't know how to handle those substances safely, you are aware of their danger.
Then there are commonplace items that you are aware call for special caution. For instance, you are aware that glue or paint toxic gases can make you ill and that gasoline should never be used near an open flame.
Unfortunately, there are potentially harmful substances and chemical hazards that you might not be aware of.
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