72-19-5 L-Threonine L-Threonine//cas 72-19-5
L-threonine specification
White crystals or crystalline powder; slightly sweet taste. Very soluble in formic acid, soluble in water; practically insoluble in ethanol and ether.
L-threonine Applications
(1)Important nutrition intensifier,
(2)The ingredient of compound amino acid transfusion
(3)Tthe material of half amide
(4)Used in feed stuff. it is essential for human body, it can be used as nutrition intensifier,pharm-grade products can be used in compound amino acid transfusion and amino acid preparation.
L-threonine food grade
ITEM | STANDARD |
Apperance | White Crystalline powder |
Identification | Meets the requirements |
Assay % | 98.5-101.5 |
Lead ≤ mg/kg | 5 |
Loss on Drying ≤ % | 0.2 |
Specific rotation[a]D20° | -26.5°~ -29.0° |
Residue on Ignition ≤ % | 0.1 |
L-threonine feed grade
ITEM | STANDARD |
Appearance | White or sandy beige crystal powder, no obvious purity |
Identification | Corresponds to standard |
C4H9NO3 Content(dry basis) ≥% | 98.5 |
Specific Rotation [a] D20 | -25.0°- -29.0° |
Loss on drying ≤ % | 0.5 |
Residue on Ignition ≤% | 0.5 |
Arsenic (As AS) ≤Mg/Kg | 2.0 |
Heavy Metals(As Pb) ≥ Mg/Kg |
30 |
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