L-Tryptophan
Product Name: L-Tryptophan
CAS No.: 73-22-3
Molecular Formula: C11H12N2O2
Application: Used as food additive, medicine intermediates, feed additive.
Specification
|
Items |
Specification |
|
Standard |
USP24 |
|
Appearance |
White to yellow-white crystal or crystalline powder |
|
Assay |
98.5 ~101.0% |
|
Loss on Drying |
≤0.3% |
|
Residue on Ignition |
≤0.1% |
|
Specific Rotation |
-29.4°~ -32.8° |
|
PH |
5.5 ~ 7.0 |
|
Heavy Metals(Pb) |
≤15ppm |
|
Iron(Fe) |
≤30ppm |
|
Sulphate(SO4) |
≤0.03% |
|
Ammonium(NH4) |
≤0.02% |