L-Threonine 98.5% (Feed Grade)

Item     Description Standard     Q/FCCW 006-2004
1     Assay(dry basis)     ≥98.5%
2     Specific rotation[α]D20     -26.00—-29.00
3     Loss on drying     ≤1.0%
4     Residue on lgnition     ≤0.3%
5     PH     5~6.5
6     Heavy metals(as Pb)     ≤20mg/kg
7     Arsenic(As)     ≤2mg/kg