Chemical name: L-Tryptophan
Chemical structure:
CAS NO.: 73-22-3
Molecular formula: C11H12N202
Molecular weight: 204.23
Specification
|
USP 28 |
FCC IV |
CP2005 |
Appearance |
White to whitish Crystalline powder |
White to whitish Crystalline powder |
White to whitish Crystalline powder |
Specific Rotation: |
-29.4°~ -32.8° |
-30.0°~ -33.0° |
-30.0°~32.5° |
pH: |
5.5 ~ 7.0 |
\ |
5.4 ~ 6.4 |
Assay:
(Calc. on dry base) |
98.5% ~ 101.5% |
98.5% ~ 101.5% |
≥ 98.5% |
Transmittance |
\ |
\ |
≥ 95.0% |
Other amino acids |
\ |
\ |
≤ 0.50% |
Residue on ignition : |
≤ 0.10% |
≤ 0.10% |
≤ 0.10% |
Loss on drying: |
≤ 0.30% |
≤ 0.30% |
≤ 0.20% |
Chlorine |
≤ 0.050% |
\ |
≤ 0.020% |
Sulfate |
≤ 0.030% |
\ |
≤ 0.020% |
Ammonium salt: |
\ |
\ |
≤ 0.020% |
Iron: |
≤ 0.003% |
\ |
≤ 0.002% |
Heavy metals (as Pb) |
≤ 15 ppm |
≤ 20 ppm |
≤ 10 ppm |
Arsenic |
\ |
≤ 1.5 ppm |
≤ 10 ppm |
Endotoxin |
\ |
\ |
≤ 50 EU |
Package
20kg net weight in fiber drum with double inner PE bags.
Usage
L-tryptophan is a heterocyclic essential amino acid, with many applications for human use including in the pharmaceutical and food additive fields.
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