D(-)-Asparagine monohydrate is a kind of pharmaceutical intermediate and can also be used in biochemical research and food additive.
|
Items |
Specifications |
|
Appearance |
White crystals or crystalline powder |
|
Assay |
99.0%~101.0% |
|
Specification roatation[αD20] |
-34.3° ~ -36.5° |
|
Loss on drying |
11.5%~12.5% |
|
Residue on ignition |
≤0.10% |
|
Other Amino acids |
≤1.0% |
|
Heavy metals (Pb) |
≤10ppm |
|
Ammonium (NH4) |
≤0.10% |
|
Arsenic (As2O3) |
≤1ppm |
|
Iron (Fe) |
≤10ppm |
|
Sulphate (SO42-) |
≤0.02% |
|
Chloride (CL-) |
≤0.02% |
|
Acidity |
4.4~6.4 |
|
Solution Transmittance |
≥98.0% |
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