L-Aspartic acid
1. Description
L-Aspartic acid is a white and odorless crystal powder with little acidity. It slightly dissolves in water and undissolves in alcohol and ether.
2.Usage
L-Aspartic acid is a kind of important natural amino acid. In medicine, it is used as medicine of cardiopathy, hepar function accelerator, ammoniate toxicide, eliminating fatigure agent and the composition of amino acid injection. In industry, it is a main material of L-Alanine and Asparagine. In food, it can be used as freshening agent, high sweetness agent of low heat and uncorrosing tooth, and elininating fatigure agent in drink of sports type.
3. Specification
Assay |
99.0-100.5% |
Transmittance |
≥98.0% |
Specific rotation[ ]20D |
+24.8° ~ +25.8° |
Loss on drying |
≤ 0.20% |
Chloride(Cl) |
≤ 0.020% |
Ammonium (NH4) |
≤ 0.02% |
Sulfate (SO4) |
≤ 0.020% |
Iron (Fe) |
≤ 10ppm |
Heavy metals (Pb) |
≤ 10ppm |
Arsenic (As2O3) |
≤ 1ppm |
Residue on ignition |
≤ 0.10% |
PH |
2.5 ~ 3.5 |
Other amino acids |
Not detectable |
