L(+)-Tartaric acid is colorless or translucent crystals, or a white, fine granular, crystalline powder. It is odorless, has an acid taste, and is stable in air.
L(+)-Tartaric acid is widely used as an acidulant in beverage and other foods. With its optical activity, L(+)-Tartaric acid is used as a chemical resolving agent to resolve DL-amino-butanol, an intermediate for the antitubercular drug. And it is used as a chiral pool to synthesize tartrate derivatives. With its acidity, it is used as a catalyst in the resin finishing of polyester fabric or pH value regulator in oryzanol production. With its complexation, L(+)-Tartaric acid is used in electroplating, sulfur removal, and acid pickling. It is also used as a complexing agent, food additives screening agent or chelating agent in chemical analysis and pharmaceutical inspection, or as resist agent in dyeing. With its reduction, it is used as a reductive agent in manufacturing mirror chemically or imaging agent in photography. It can also complex with metal ion and can be used as a cleaning agent or polishing agent of the metal surface.
Food Industry
– As acidifier and natural preservative for marmalades, ice cream, jellies, juices, preserves, and beverages.
– As effervescent for carbonated water.
– As emulsifier and preservative in the bread-making industry and in the preparation of candies and sweets.
Oenology: Used as an acidifier. Used in musts and wines to prepare wines that are more balanced from the point of view of taste, the result being an increase in their degree of acidity and a decrease in their pH content.
Cosmetics Industry :Used as a basic component of many natural body crèmes.
| ITEM | STANDARD |
| Appearance | White powder |
| Purity(as c4h6o6) | 99.5 -100.5% |
| Specific rotation(20 ℃) | +12.0 ° — +13.0 ° |
| Heavy metals( as pb) | 10 ppm max |
| Residue on ignition | 0.05% max |
| Arsenic(as as) | 3 ppm max |
| Loss on drying | 0.2% max |
| Chloride | 100 ppm max |
| Sulfate | 150 ppm max |
| Oxalate | 350 ppm max |
| Calcium | 200 ppm max |
| Water solution clarity | Conforms to the STANDARD |
| Color | Conforms to the STANDARD |