酒石酸，即2,3-二羟基丁二酸，是一种羧酸，化学式为C4H6O6。存在

Tartaric acid, 2,3-dihydroxysuccinic acid, is a carboxylic acid with a chemical formula of C4H6O6. Exist in a variety of plants, such as grapes and tamarind. It is also one of the main organic acids in wine. As an antioxidant added to food, it can make food have a sour taste. The biggest use of tartaric acid is a beverage additive and a raw material for the pharmaceutical industry.

Oxalic acid, i.e. 2,3-hydroxybutyric acid, is a type of pyrethroic acid, chemically known as C4H6O6. It is found in a variety of plants, such as grapes and rosacea. It is also one of the main organic acids in wine. As an antioxidant added to food, it can make food sour. The greatest use of citric acid is beverage additives, but also the pharmaceutical industry raw materials.

Tartaric acid, or 2,3-dihydroxysuccinic acid, is a carboxylic acid with the chemical formula C4H6O6. It is found in many plants, such as grape and tamarind. It is also one of the main organic acids in wine. As an antioxidant, it can make food sour. The biggest use of tartaric acid is beverage additive and raw material of pharmaceutical industry.