White to light yellow crystals or crystalline powder, odorless, sour and bitter in taste, stable in the air, good heat resistance, but decomposes slowly in sunlight. Easily soluble in water, slightly soluble in ethanol, insoluble in chloroform and ether. It has good stability in most foods, is sensitive to light in alkaline solutions, and is rapidly destroyed at high temperatures.
Used for nutritional enhancement of ready-to-eat cereals, prepared milk powder, biscuits, beverages and other baked goods.
| Item | Index | Item | Index |
| As | ≤2mg/kg | PH（100g/L solution） | 2.4-3.0 |
| Content% | 98.0-100.5 | Burning residue % | ≤0.1 |
| Loss on drying % | ≤0.5 | Heavy metals（Pb） | ≤10mg/kg |
