Hair, fur, dirt, fat, and other unwanted materials are removed from the hide.
The hide is permanently altered as collagen, the principal protein present, is made into leather by being cross-linked with a tanning agent. Traditionally, vegetable tanning agents based on polyphenolics were (and still are) used. Commercially, chrome tanning agents, based on chromium sulphate, are used.
The tanned leather is stabilized and finished.
KeywordsPalmic Acid Oxalic Acid Sulphur Dioxide Dangerous Good Flammable Liquid
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