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العربL-Tryptophan
L-Tryptophan
Chemical
formula: C11H12N2O2
Molecular weight: 204.23
CAS no.: 73-22-3
Descriptions of L-Tryptophan
L-Tryptophan
is a white or yellowish crystal or crystalline powder, with slight bitterness.
The melting point is 289℃. It is slightly soluble in water, and insoluble
in ethanol and ether.
Functions
L-Tryptophan is one of the essential amino acids for human
and animal. It is mainly used in the following industries.
1. In medical industry, it is mainly used in formatting complex amino acid
perfusion and preparation.
2. In food and feed industry, it is mainly used as a nutritional supplement.
Specifications
|
Items |
Pharma Grade(USP32) |
Food Grade(FCC V) |
Feed Grade |
|
Appearance |
White crystalline powder |
White crystalline powder |
Yellowish crystalline powder |
|
Assay |
98.5% ~ 101.5% |
98.5% ~ 101.5% |
≥98.0% |
|
Specific rotation |
29.4º ~ -32.8º |
-30.0º ~ -33.0º |
-30.0º~ -32.5º |
|
PH |
5.5 ～ 7.0 |
5.5 ~ 7.0 |
5.4~6.4 |
|
Loss on drying |
≤0.3% |
≤0.3% |
≤1.0% |
|
Residue on ignition |
≤0.1% |
≤0.1% |
≤1.0% |
|
Chloride |
≤0.05% |
-- |
-- |
|
Sulphate |
≤0.03% |
-- |
-- |
|
Iron |
≤0.003% |
-- |
-- |
|
Heavy metals |
≤15ppm |
-- |
≤20ppm |
|
Lead |
-- |
≤5ppm |
-- |
|
Arsenic |
≤1ppm |
≤1ppm |
≤5ppm |
Package: 25KG kraft paper bags or in fiber drum.
Shelf Life: 2 years
Storage: Prevent from sunshine or rain, stored in shaded, cool and dry places.
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