| ≥1 piece |
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.
Uses: Widely used in food,medicine,chemistry and light industry,etc.Mainly used in manufacture tartaric acid salts,such as potassium sodium tartrate,and can be used as beer foaming agent.Also applied in tanning,photo,glass,enamel and telecom materials industries.It's acidity is 1.3 times as citric acid,so especially as acidifying agent for Grape juice.
| 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 |