Molecular Formula: C11H12N2O2 CAS：73-22-3 Properties: white or yellow-white crystalline powder. Odorless, bitter, melting point is 289℃(dissolution). colored under long light. Produced indoles with water in heat environment, when heated with sodium hydroxide, copper sulphate produced more. Tryptophan is stable with acid in the dark. Dissoluted easily with other amino acids, sugars, aldehydes coexist. Kept stable with 5mol / L sodium hydroxide in 125 degrees when no hydrocarbon coexistence. The tryptophan can be completely decomposed and producing rot black material with acid decomposition of protein. Slightly soluble (1.1g/100ml, 25℃) in water. Soluble in hot water, hot ethanol, dilute hydrochloric acid and alkaline hydroxide solution. Essential amino acid. Usage: nutritional supplements. Quality Standard: FCCIV
|
Items |
standard |
|
specific rotation (°) |
-30.0―-33.0 |
|
drying shrinkage (%) |
0.3 max |
|
ignition residue (%) |
0.1 max |
|
Arsenic (ppm) |
1.5 max |
|
Heavy metal (ppm) |
20 max |
|
Iron (ppm) |
10 max |
|
Content (%) |
98.5―101.5 |
Packaging: 25 KG/barrel Transportation: avoid sun and rain, be transported as general chemicals but with no toxic, hazard materials.
Storage: stored in a dry clean dark environment, and not be mixed with toxic substances to avoid contamination. Shelf life: two years |
