L-Tryptophan 98%
Growing animals need Tryptophan as an essential nutrient not only for protein deposition, but also for various metabolic functions. ChoiceChem L-Tryptophan 98% Feed Grade is produced by fermentation from natural raw materials of agricultural origin. ChoiceChem L-Tryptophan 98% serves for the adequate supply of the essential amino acid tryptophan. This product is used only for animals.
CAS RN.: | 73-22-3 |
EINECS: | 200-795-6 |
H.S.CODE: | 29224290 |
1. Chemical Analysis
Parameter | Minimum Tolerance | Maximum Tolerance |
Description | White to light yellow | crystalling powder |
L-Tryptophan,% | 98% min. | 98.68% |
Specific rotation | -29°~ 32.8° | 29.83° |
PH | 5.0 ~ 7.0 | 6.57 |
Loss on drying | 0.5% max. | 0.45% |
Crude Ash | 0.5% max. | 0.48% |
As(mg/kg) | 2 max. | < 1 |
Pb (mg/kg) | 5 max. | - |
Cd (mg/kg ) | 2 max. | - |
Hg (mg/kg) | 0.1 max. | - |
Salmonella ( per 25kg sample) | Negative | Negative |
Result | PASS | |
2. Application
L-tryptophan is an essential amino acid and it continues to be used as a nutritional. It experts positive effects on the growth promotion and the repair of histiocyte. It offers alimentation for organism to enhance the immune capacity, and adjust secretion of enzymes and hormones of the organism. It is also used to transport other nutriments and for detoxifcation.
Considering L-Tryptophan playing a key role in growth performance and feed efficiency, L-Tryptophan is recommended to adding L-Tryptophan in diet to achieve the optimal amino acid balance and fulfill the digestible L-Tryptophan requirement of animals, especially piglets, sows and poultry, etc.

3. Transportation Information
DOT Classification: | Not a DOT controlled material |
U.N. | Not applicable. |
Packing Group: | Not applicable. |
4. Storage & Handing
Precautions: Keep away from heat. Keep away from sources of ignition. Do not ingest. Do not breathe dust. Wear suitable protective clothing. If ingested, seek medical advice immediately and show the container or the label. Keep away from incompatibles such as oxidizing agents, acids.
Storage: Store in dry conditions and fresh place in a sealed or closed container that is to be protected from water, sunlight and heat. Avoid direct contact with floor and any source of combustion.
5. Packing
In 10kg / 20kg bags
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