| Meets U.S.P. Requirements |
| Assay (C5H11NO2S) (dried basis) 98.5 - 101.5 % |
| Identification Passes Test |
| Specific Rotation [\a]^2^5D + 22.4 - 24.7 |
| pH... 5.6 - 6.1 |
| Loss on Drying at 105 C max. 0.3 % |
| Residue on Ignition max. 0.4 % |
| Chloride (Cl) max. 0.05 % |
| Sulfate (SO4) max. 0.03 % |
| Iron (Fe) max. 0.003 % |
| Chromatographic Purity: |
| Individual Impurities max. 0.5 % |
| Total Impurities max. 2.0 % |
| Heavy Metals (as Pb) max. 0.0015 % |
| Organic Volatile Impurities Conforms to USP/NF |
| Assay (C5H11NO2S) (dried basis) 98.5 - 101.5 % |
| Identification Passes Test |
| Lead (Pb) 5 mg/kg max |
| Loss on Drying at 105 C max. 0.5 % |
| Residue on Ignition max. 0.1 % |
| Specific Rotation [\a]^2^0D + 21.0 - 25.0 |
| \Meets BP/Ph.Eur. Chemical Specifications |
| Assay (C5H11NO2S) (dried basis) 99.0 - 101.0 % |
| Identification A Passes Test |
| Identification B Passes Test |
| Appearance of Solution Passes Test |
| pH... 5.5 - 6.5 |
| Specific Rotation [\a]^2^0D + 22.5 - 24.0 |
| Ninhydrin-Positive Substances Passes Test |
| Chloride (Cl) max. 200 ppm |
| Sulfate (SO4) max. 300 ppm |
| Ammonium (NH4) max. 200 ppm |
| Heavy Metals (as Pb) max. 10 ppm |
| Iron (Fe) max. 10 ppm |
| Loss on Drying at 105 C max. 0.5 % |
| Ash (sulfated) max. 0.1 % |
| \Meets JP Chemical Specifications |
| Assay (C5H11NO2S) (dried basis) 98.5 - 101.0 % |
| Identification Passes Test |
| Optical Rotation + 21.0 - 25.0 |
| pH... 5.2 - 6.2 |
| Clarity and Color of Solution Passes Test |
| Chloride (Cl) max. 0.021 % |
| Sulfate (SO4) max. 0.028 % |
| Ammonium (NH4) max. 0.02 % |
| Heavy Metals (as Pb) max. 20 ppm |
| Arsenic (As) max. 2 ppm |
| Other Amino Acids Passes Test |
| Loss on Drying at 105 C max. 0.30 % |
| Residue after Ignition max. 0.10 % |
| Endotoxin Concentration, IU/mg Information Only |