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contact with the skin and mucous

membranes.
6 This symbol means a chemical that is

corrosive and can damage living tissue.

By looking at the acidity of a chemical, we
can tell if the material has corrosive
corosive properties. The pH of corrosive materials

Sumber: is usually in the range of < 2 (strong acid)
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or > 11.5 (strong base).
7 This symbol indicates the danger of a

material if released into the

environment. This material can affect the
ecosystem of a place, even to the point of
Dangerous To destroying it.

The Environment
Sumber:
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2. Personal Protective Equipment

Chemical laboratories are workplaces that have many potential
hazards. This includes chemical solutions, chemical reaction explosions,

and heat from equipment. Not surprisingly, people who work in a

chemical laboratory must use personal protective equipment. Personal
protective equipment as follows.