D-Tryptophan
发布日期：2020-09-22 17:49 浏览次数：
D-Tryptophan Molecular formula: C11H12N2O2 Molecular structure: Molecular weight:204.23 CAS No.:153-94-6 【Description】White or yellowish crystal powder, taste slightly sweet. 【Specification】
|
Item |
Limit |
|
Appearance |
White or yellow crystalline powder |
|
Assay |
99.0%~101.0% |
|
Specific Rotation [α]D20 |
+30.5°~ +32.5° |
|
Transmittance |
≥95.0% |
|
PH |
5.5~ 6.4 |
|
Loss on Drying |
≤0.2% |
|
Residue on Ignition |
≤0.1% |
|
Chloride [Cl-] |
≤0.02% |
|
Sulfate [SO42-] |
≤0.02% |
|
Ammonium [NH4+] |
≤0.02% |
|
Heavy Metals [Pb] |
≤10ppm |
|
Iron [Fe] |
≤10ppm |
|
Arsenic [As2O3] |
≤1ppm |
|
Other Amino Acids |
Conforms |
【Function】D-Tryptophan is important nutrition product, it is be used as prevention of nicotinic acid deficiency in medicine. 【Package】25kg net weight cardboard drum lined with PE bag, or according to the customer`s demand. |
