What does the term “glacial” mean when referring to glacial acetic acid?

Answer 1

Glacial means that it is water free.
The name comes from the German "ice-vinegar" which refers to the crystals that are created when you cool acetic acid below the melting point. As you know, crystals are pure, so they contain no water.

Answer 2

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Glacial acetic acid is a trivial name for water-free acetic acid. Similar to the German name Eisessig (literally, ice-vinegar), the name comes from the ice-like crystals that form slightly below room temperature at 16.7 °C (about 62 °F). The most common and official abbreviation for acetic acid is AcOH or HOAc where Ac stands for the acetyl group CH3−C(=O)−. In the context of acid-base reactions the abbreviation HAc is often used where Ac instead stands for the acetate anion (CH3COO−), although this use is regarded by many as misleading. In either case, the Ac is not to be confused with the abbreviation for the chemical element actinium. Acetic acid has the empirical formula C2H4O2. This is often written as CH3-COOH, CH3COOH, or CH3CO2H to better reflect its structure. The ion resulting from loss of H+ from acetic acid is the acetate anion. The name acetate can also refer to a salt containing this anion or an ester of acetic acid.

Answer 3

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What does the term “glacial” mean when referring to glacial acetic acid?

Answer 4

Acetic Definition

Answer 5

Pure water-free acetic acid =glacial acetic acid


no water present.

Answer 6

Pure (or concentrated) acetic acid. "Glacial" comes from the observation that it crystallizes not much below room temp.

Answer 7

Ancient vinegar?