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Product Name | Hot Selling Food Grade Cas 73-22-3 Natural L-Tryptophan Powder | ||||||
Specification | 98% | ||||||
Appearance | White Powder | ||||||
Cas | 73-22-3 | ||||||
Sample | Avaliable | ||||||
MOQ | 1Kg | ||||||
Shelf life | 2 years | ||||||
Package | 1kg Hot Selling Food Grade Cas 73-22-3 Natural L-Tryptophan Powder with double plastic container inside/Aluminum foil bag outside. 1kg/Carton,5kgCarton,10kg/Carton,25kg/Drum, OEM | ||||||
Delivery time | Within 2-3 work days after payment | ||||||
Payment terms | TT,Alibaba Trade Assurance,Western Union |
L-Tryptophan | USP32 | AJI92 | CP2015 | EP8 |
Assay | 98.5-101.5% | 99.0-100.5% | ≥99.0% | 98.5-101.0% |
PH | 5.5-7.0 | 5.4-6.4 | 5.4-6.4 | / |
Specific rotation[a]D20 | / | -30.5°--32.5° | -30.5°--32.5° | -30.0°--33.50° |
Specific rotation[a]D25 | -29.4°--32.8° | / | / | / |
Transmittance(T430) | / | ≥95.0% | ≥95.0% | clear & colorless ≤BY6 |
Chloride(CI) | ≤0.05% | ≤0.02% | ≤0.02% | ≤0.02% |
Ammonium(NH4) | / | ≤0.02% | ≤0.02% | ≤0.02% |
Sulfate(SO4) | ≤0.03% | ≤0.02% | ≤0.02% | ≤0.03% |
Iron(Fe) | ≤30ppm | ≤20ppm | ≤20ppm | ≤20ppm |
Heavy metals(Pb) | ≤15ppm | ≤10ppm | ≤10ppm | ≤10ppm |
Arsenic | / | ≤1ppm | ≤1ppm | / |
Ninhydrin-positive substances | / | / | / | conform |
Loss on drying | ≤0.30% | ≤0.20% | ≤0.20% | ≤0.50% |
Residue on ignition | ≤0.10% | ≤0.10% | ≤0.10% | ≤0.10% |
Organic volatile impurities | ||||
Endotoxin |
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