Glacial acetic acid is the undiluted form of acetic acid. It doesn’t contain any water; thus, it has 100% acetic acid only. Glacial acetic acid is diluted by adding water to prepare the required concentration of acetic acid solutions. Since it is too concentrated, the acidity of glacial acetic acid is high. Therefore, it is corrosive and can damage the skin if in contact.
Glacial acetic acid is a trivial name for water-free (anhydrous) acetic acid. Acetic acid is an organic compound with the chemical formula CH3COOH. It is a colourless liquid that when undiluted is also called glacial acetic acid. Although it is classified as a weak acid, acetic acid is highly dangerous to skin. A common abbreviation for acetic acid is HOAc, where Ac stands for the acetyl group CH3−C(=O)−.
HO--Ac or HO-(O=)C-CH3 or
CH3-C(=O)-OH or CH3COOH
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