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China, Chinese Manufacturer Supply Nutritional Supplements Food Amino Acids Powder CAS 54-12-6 99% L-Tryptophan1 Industrial Products Supplier Manufacturer Details, price list catalog:
China Industrial Products Supplier Manufacturer List Catalog
Food AdditiveNutrition EnhancersL-TryptophanTryptophan
Hubei Novcare Pharmaceutical Co., Ltd.
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Product Description Product Name: L-Tryptophan CAS 73-22-3 ItemsRequirementsResultAssay98.5%~ 101.0 % (dried substance) 99.6% Appearance White or almost white, crystalline or amorphous powder.Conforms Specific rotation ? 30.0o~? 33.0 o(dried substance) -31.8°Infrared absorption spectrophotometryConforms to Reference Standard Conforms Appearance of solutionThe solution is clear and not more intensely coloured than reference solution BY6. ConformsNinhydrin-positive substances for each impurity ≤ 0.2% total ≤ 0.5% ConformsImpurity A and other substancesConforms to the requirement ConformsChlorides ≤200 ppm ConformsSulfates≤300 ppm Conforms Ammonium≤0.02% Conforms Iron ≤20 ppm ConformsLoss on drying ≤0.5% at 105oC 0.06% Sulfate ash ≤ 0.1%0.03%BET < 50EU/g Conforms ConclusionComplies with the specification of EP9.0.
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