Charcoal is a black, brittle substance that has a variety of uses. For example, it is used in pigments (coloring matter); in filters to remove unwanted colors, flavors, and odors; as a fuel; and as a drawing instrument.
Ethane, EHTH ayn, is an important industrial gas. It is obtained directly from natural gas or by refining petroleum. Its most important use is in… More>>
Formic acid is an important industrial chemical. Leather manufacturers use formic acid for tanning and for removing hair from animal skins. It is… More>>
Charcoal is a black, brittle substance that has a variety of uses. For example, it is used in pigments (coloring matter); in filters to remove… More>>
Chalk
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