Detailed Product Description

Description white crystals or crystalline powder; acid taste and slightly agreeable white
Crystals or crystalline powder; acid taste and slightly agreeable

Specific rotation [a]d20° -31.0°to -32.2° -31.8°
State of solution 95.0% min 98%
Chloride(cl) 010% max <0.10%
Heavy metals(pb) 10ppmmax <10ppm
Arsenic(as2o3) 2ppmmax <2ppm
Other amino acids chromatographically not detectable conforms
Loss on drying 0.20% max 0.12%
Residue in ignition(sulfated) 0.20% max 0.05%
Assay 99.0% to 100.5%99.0% to 100.5% calculated on the dried basis 99.7%
Ph 3.0 to 3.5 3.2