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L-Tryptophan, Feed Grade Amino Acids,
CAS NO: 73-22-3,
Certificate of Analysis:
Item | Standard(Q/AFF08-2008/ AJI92 ) | Test Result |
Appearance | White crystals or pale yellow crystalline powder | Pass test |
Content (On dry base) | ≥98% | 98.57% |
Specific rotation | -29.0°—-33.0° | -31.04° |
Chloride | ≤0.03% | 0.004% |
Sulfate | ≤0.03% | 0.0005% |
Heavy metals (Pb) | ≤0.02% | 0.0006% |
Loss on dry | ≤0.5% | 0.14% |
Residue on ignition | ≤0.5% | 0.10% |
L-Tryptophan