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L-Tryptophan
 [Name]:
L-Tryptophan, L-Trp[Structural formula]: [Molecular Formula]: C11H12N2O2 [Molecular weight]: 204.23 [Properties]: White crystals or crystalline powder,slightly bitterness. Slightly soluble in water, insoluble in ethanol and in ether. [Usage]: L-Tryptophan is one of the essential amino acids, mainly used as food additives, and formatting complex amino acid perfusion and preparation Quality standard as FEED GRADE, FCC IV, USP23 or discuss |
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Items
|
Feed Grade
|
FCC IV |
USP23
|
| Assay(on dry basis) | 98.0% MIN. |
98.5% ~ 101.5% |
98.5%  101.5%
|
| Appearance | Light yellow powder |
-- |
-- |
| Specific rotation |
-- |
-30.0  -33.0 |
-29.4 -32.8 |
| Chloride(Cl) |
-- |
-- |
0.05% MAX |
| Sulfate (SO4) |
-- |
-- |
0.03% MAX |
| Iron(Fe) |
-- |
-- |
0.003% MAX |
| Heavy metals (Pb) |
-- |
20ppm MAX |
15ppm MAX |
| Arsenic |
-- |
1.5ppm MAX |
1.5ppm MAX |
| Loss on drying | 1.0% MAX. |
0.3% MAX |
0.3 % MAX |
| Residue on ignition | 0.5% MAX. |
0.1% MAX |
0.1 % MAX |
| pH value |
-- |
-- |
5.5 ~ 7.0 |
| Bulk Density | 0.35-0.45 |
-- |
-- |
| [Packing]: In kraft paper bags or in
fiber drum 25KG net each. [Transport and Storage]: Handle with cares to avoid damaging the package, protects them from sunshine or rain. Don't transport it with poisonous or harmful goods. Stored in shaded, cool and dry places. |
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| Add: NO. 46, FANXI ROAD, SHIJIAZHUANG, CHINA. | P.C.: 050011 |
| Tel: 0086-311-86046166 | Fax: 0086-311-86041112 |
| E-MAIL: gchem@heinfo.net | |
| HTTP:// www.aminoacid-chem.com |
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Copyright(C)2002,
Shijiazhuang Shixing Amino Acid Co.,Ltd. All Rights Reserved. |
