L-Tryptophan(USP39)

-7%

L-Tryptophan(USP39)

$30.00 $28.00


Description

MOQ: 25KG

Certificate of Analysis

Product Name: L-Tryptophan
Reference standard: USP39
Item Specifications Results
Appearance white-like crystalline powder Consistent
Specific rotation -29.4 °~-32.8 ° -30.15 °
PH 5.5-7.0 5.9
Loss on drying ≤0.30 0.26%
Residue on ignition ≤0.1 0.03
Chloride (Cl) ≤0.05% <0.05%
Sulfate(SO4) ≤0.03% <0.03%
Iron ≤0.003 <0.003%
Heavy metals (Pb) ≤0.0015% <0.0015%
Assay 98.5~ 101.5% 99.1%
Conclusion: This product conforms to requirements of USP39grade standard.




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