Tuesday, October 27, 2009

Soaps, Detergents

1. Whats a soap? In chemistry terms, a soap is a sodium or potassium salt of a fatty acid.

2. Basic formula for soap; RCOONa (for sodium soap) or RCOOK (for potassium soap). The R stands for the alkyl groups of carbon chain.

3. How to make soap? Saponification (Sa.po.nee.fee.kay.syen).

4. Ester + alkali = soap + glycerol.

5. Contoh: stearate(ester) + sodium hydroxide(alkali) = sodium stearate(soap) + glycerol.

6. Some names of soap: sodium stearate, sodium palmitate.




to be continued .........

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