item | standard | analysis data |
specific rotation[α]20/d (c=5,1mol/l hcl) | +10.5° to +12.3° | +11.32° |
chloride (cl) | not more than 0.10% | 0.05% |
sulfate (so4) | not more than 0.2% | 0.18 % |
heavy metal(pb) | not more than 10ppm | <10ppm |
arsenic(as2o3) | not more than 2ppm | <2ppm |
loss on drying | not more than 0.20% | 0.12% |
assay | 98.0% to101.0% | 99.3% |
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