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Item | Standard |
Appearance | White granular or powder |
Assay (c6h7o2k) | 98. 0% - 101. 0 % |
Acidity or alkalinity( as c6h5o2 or k2co3 ) | < 1. 0% |
Heavy metal ( as pb ) | < 10 ppm |
Arsenic ( as as ) | < 2 ppm |
Mercury ( as hg ) | < 1 ppm |
Loss on drying ( 105 deg. C 3 hours ) | < 1. 0% |
Aldehyde ( as hcho ) | < 0. 1% |
Melting point | 133 – 135 deg. C |