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Name of index | FCC-V | E-333(iii) |
Description | Fine white powder | |
Content | 97.5-100.5% | ≥97.5%( anhydrous basis) |
Heavy metals(As Pb), ≤% | 0.001 | 0.0005 |
Oxalate(As H2C2O4), ≤% | 0.03 | 0.01 |
Loss on drying, | 10-14% | ≤14(180ºC,4h%) |
Fluoride,≤ppm | 30 | 30 |
Arsenic(As),≤ppm | -- | 1 |
Lead(Pb),≤ppm | 2 | 1 |
Mercury(Hg),≤ppm | -- | 1 |
Carbonates | -- | Dissolving 1 g of calcium citrate in 10 ml 2 N hydrochloric acid must not liberate more than a few isolated bubbles |