Technical aspects
Natural tartaric acid is a crystalline product with high chemical purity, a neutral odour and a mild, sour taste. Thanks to its low heavy metal content and excellent physicochemical parameters, it is a reliable ingredient in many industrial and food formulations.
| Parameter | Value |
| Composition | L(+)-tartaric acid |
| Chemical formula | C₄H₆O₆ |
| Molecular weight | 150.09 g/mol |
| Purity | ≥99.7% |
| Optical rotation [α] (C=20%) | +12.0° to +13.0° |
| Melting point | 168–170°C |
| Moisture content (loss on drying) | ≤0.5% |
| Residue after combustion | ≤0.05% |
| Arsenic | ≤2 mg/kg |
| Lead | ≤2 mg/kg |
| Mercury | ≤1 mg/kg |
| Cadmium | ≤1 mg/kg |
| Sulphates | ≤0.1% |
| Oxalic acid salts | ≤0.01% |
