A white crystalline acidic compound obtained as a by-product of wine fermentation and used chiefly in baking powder.
- Alternative name: potassium hydrogen tartrate; chemical formula: HOOC(CHOH)2COOK.
- The commercial production of tartaric acid begins with potassium hydrogen tartrate obtained as a waste product from the wine industry.
- Addition of an acid such as citric acid (found in lemon juice) or cream of tartar (which contains tartaric acid) also enhances inversion.
- Other examples are bicarbonate of soda, cream of tartar, calcium oxalate, and saltpetre.
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