Items | Specifications |
Appearance | White crystalline powder |
State of solution (Transmittance) | Clear and colorless not less than 98.0% |
Specific optical rotation | +31.5o ~ +32.5o |
Assay ,% min | 99.0 ~ 100.5 |
Loss on drying,% max | 0.2 |
Heavy metals (as Pb) max | 10ppm |
PH value (5% in water) | 3.0~3.5 |
Residue on ignition,% max | 0.1 |
Chloride ,%(as Cl) max | 0.02 |
Sulfate(SO4),%(as SO4) max | 0.02 |
Iron(as Fe), max | 10ppm |
Other amino acids | Accord with specifications |
Arsenic(as As2O3), max | 1ppm |
Ammonium(as NH4),% max | 0.02 |