Amino Acid

l-tryptophan

CAS# 73-22-3

Molecular Formula : C11H12N2O2

Specification: USP

Packing: 25kg/fiber drum

TDS:
Technical Data Sheet

Items	Specification	Results
Appearance	White to yellowish white crystals or crystalline powder	Pass
Identification	Infrared absorption	Pass
Specific rotation	-29.40°to -32.80°	-31.30°
Chloride	0.05%max	＜0.05%
Iron	30ppm max	＜30ppm
Sulfate	0.03%max	＜0.03%
Heavy metals	15ppmmax	＜15ppm
Loss on dying	0.3%max	0.15%
Residue on ignition	0.10%max	0.08%
Assay	98.5%-101.5%	99.4%
Organic volatile impurities	Meets the requirement	Pass
Ph	5.5-7.0	5.9