Description
Specification Of DL Malic Acid
Item | Specification |
1.Assay | ≥99.5% |
2.Character | White fine powder or crystals |
3.Melting Point | 202-206(±0.5)°C |
4.Specific Optical Rotation | [a]D20= + 174.0°- +186.0° |
5.Solubility | Soluble in water.alcohol |
6.Transparency in water | Transparent colorless no suspended |
7.Ph(1% water solution) | 5.0-7.0 |
8.Loss on drying | ≤ 0.5% |
9.Sulfated ash | ≤ 0.5% |
 10.Heavy metals |  ≤ 10ppm |
11.Arsenic | ≤ 1ppm |
12.Plumbum | ≤ 2ppm |
13.Total Plate count | <300cfu/g |
14.Yeast & Mold | <100cfu/g |
15.Escherichia coli | Negative |
16.Staphylococcus aureus | Negative |
17.Hydroquinone | Negative |