 L-Lactic acid
L-Lactic acid is a kind of organic acid, colorless or light yellow thick liquid, widely used in the fields including food, brewing, drinks, medicine, leather, plastic chemical and pesticide etc.. Series products include calcium lactate(used in preventing calcifames), sodium lactate, magmesium lactate，ferric lactate，ferrous lactate and zinc lactate etc..
Quality standard：
Index name |
Medical grade |
Food grade |
Chroma（HPHA） |
≤35 |
≤50 |
Iron salt（PPM） |
≤5 |
≤10 |
Arsenic salt（AS计）（PPM） |
≤1 |
≤1 |
Calcium salt |
Qualified |
Qualified |
Chloride（PPM） |
≤10 |
≤20 |
Sulfate（PMM） |
≤10 |
≤50 |
Heavy metal（based on Pb）（PPM） |
≤5 |
≤10 |
Optical purity % |
≥98 |
≥98 |
Residue on ignition% |
≤0.1 |
≤0.1 |
Thermal stability ℃ |
≥190 |
≥190 |
Insoluble substance in ether |
Qualified |
Qualified |
Methanol and methyl ester% |
≤0.2 |
≤0.2 |
Easy carbon compound |
Qualified |
Qualified |
Substance with reducing property |
Qualified |
Qualified |
Oxalic acid, citric acid,phosphoric acid, tartaric acid |
Qualified |
Qualified |
Content % |
85-90 |
80-85 |
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