L-tryptophan

Molecular formula: C11H12N2O2

Molecular Weight: 204.23

CAS :73-22-3

Appearance: white crystal or crystalline powder, slight odor, taste bitter.

Content: 98.5% to 101.5%

Melting point: 289 ° C, slightly soluble in water, insoluble in ethanol.

Specific Rotation: -29.4 ° ~ -32.8 °

Chloride: ≤ 0.05%

Sulfate (SO4): ≤ 0.03%

Iron salts (Fe): ≤ 0.003%

Heavy metals (Pb): ≤ 15ppm

Arsenic: ≤ 1.5 ppm

Loss on drying: ≤ 0.3%

Residue on ignition: ≤ 0.1%

PH: 5.5 ~ 7.0

Storage and transportation (Storeage): store in a cool dry place

Use: L-tryptophan is the human body can not synthesize essential amino acids. The food industry is mainly used for food and nutrition supplements. USP grade L-threonine used in the preparation of compound amino acid transfusion and amino acid preparations

Packaging: 25 kg / cardboard drum