... .0Chroma,Hazen(platinum-cobalt) , ≤102030Water , %≤0.15--Formic acid , %≤0.060.150.35Acetic acid , %≤0.050.050.10Residue on evaporation , %≤0.010 ... potassium per manganat , ≥305- 2.Properties: It is an organic acid which gives vinegar, its sour taste and pungent smell; Pure ... , Water-free acetic acid is a colourless liquid that absorbs water from the environment ...