Specifications
l-methionineCAS No.: 63-68-3
EC No.: 200-562-9
Formula: C5H11NO2S
l-methionine
DETAILED DELIVERY SPECIFICATIONS
Specific rotation[]D20: +23.0 to +24.5
State of solution(transmittance): Clear and colorless 98.0% min.
Chloride(Cl): 0.020% max.
Ammonium(NH4): 0.02% max.
Sulfate(SO4): 0.020% max.
Iron(Fe): 10ppm max.
Heavy metals (Pb): 10ppm max.
Arsenic(As2O3): 1ppm max.
Other amino acids: Chromatographically not detectable
Loss on drying: 0.20% max.
Residue on ignition(sulfated): 0.10% max.
Assay: 99.0% min.
PH: 5.6 to 6.1