Item | Standard | Analysis data |
Appearance | White or almost white granules or powder | Conforms |
Specific rotation[α]20/D (C=8 in 6N HCl) | +25°to +27° | 26.0° |
Chloride (Cl) | Not more than 200ppm | <200ppm |
State of Solution | Clear and colorless | Conforms |
Sulfate (SO4) | Not more than 300ppm | <300ppm |
Heavy metal(Pb) | Not more than 20ppm | <20ppm |
Ammonium(NH4) | Not more than 100ppm | <100ppm |
TLC | Two points | Comforms |
Loss on drying | Not more than 0.5% | 0.42% |
Residue on ignition(sulfated) | Not more than 0.1% | 0.09% |
Assay | 98.5% to 101.5% | 99.0% |
PH | 6.0 to 7.0 | 6.7 |