Acetic acid:- Explained in brief
by : ---
Acetic acid (CH3COOH):-
A weak acid. Used for pH 3.5-5.5. Acetic acid is a liquid that has a recognizable pungent odor. Vinegar is about 5% acetic acid with a pH 2.4-3.4. It can be purchased as 26% solution from shops that sell chemicals for developing photographs (sometimes it also contains a yellow colorant that renders it unsuitable for dyeing), or as a 56% solution from some dye suppliers (this must be shipped as a hazardous material and the shipping is thus expensive) and as glacial acetic acid from chemical suppliers (the name glacial comes from the fact that at slightly below room temperature it solidifies or freezes). Acetic acid and sodium acetate form a buffer system that maintains the pH constant around pH 4.7.
