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Borax

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Borax, also known as sodium borate, sodium tetraborate, or disodium tetraborate, is a naturally occurring mineral and a common household chemical. Its chemical formula is Na2B4O7·10H2O. 

E170 - Calcium Carbonate

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Calcium carbonate is composed of carbonate ions and calcium ions. This white substance has a molar mass of 100.1 g/mol. Calcium carbonate is the major compound found in limestones like chalk, but also in marble.