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| Item | Unit | Standard value |
| Molecular weight | G/mol | 90.8 |
| Assay | %wt | 80.0-88.0 |
| Stereochemical purity | %L(+) | ≥97% |
| Density(@20°C) | G/ml | 1.18-1.19 |
| Chroma( fresh solution) | APHA | ≤20 |
| Odor | - | slight sourness |
| Taste | - | mild sourness |
| Heavy metals(as Pb) | ppm | ≤10 |
| Fe | ppm | ≤10 |
| Ca | ppm | ≤10 |
| Chloride | ppm | ≤10 |
| Sulfate | ppm | ≤10 |
| Sulphuric acid ash | % | ≤0.1 |
| Cyanide | ppm | ≤5 |
| Pb | ppm | ≤5 |
| Reducing substances (sugar) | - | pass FCC Inspection |
| Citric acid/oxalic acid /tartaric acid /phosphoric acid | - | pass USP test |
Lactic acid food grade