Citric adj. (Chem.) Of, pertaining to, or derived from, the citron or lemon; as, citric acid.
Citric acid (Chem.), an organic acid, C3H4OH.(CO2H)3, extracted from lemons, currants, gooseberries, etc., as a white crystalline substance, having a pleasant sour taste.
... soluble in acids, but aluminium hydroxide dissolves with considerable difficulty after standing or boiling for some time. The precipitation of the hydroxides is promoted by the presence of ammonium chloride, but is partially or entirely prevented by the presence of tartaric or citric acids, glycerine, sugars, and some other forms of soluble organic matter. The hydroxides yield on ignition an oxide suitable for weighing ... — An Introductory Course of Quantitative Chemical Analysis - With Explanatory Notes • Henry P. Talbot
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