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Quality index | Specifcation | GB1889-2004 | FCC, 1997 | ||
Content (CaHPO4:2H2O), w/% | Content(As CaHPO4. 2H2O ) | 98.0-103.0 | 97.0-105.0 | ||
Arsenic (As), mg/kg ≤ | Arsenic | 0.0002 | 0.0003 | ||
Lead (Pb), mg/kg ≤ | Pb | 0.0005 | 0.0002 | ||
Fluoride (in F), mg/kg ≤ | Fluoride (As F) | 0.005 | 0.005 | ||
Heavy metal (in Pb), mg/kg. ≤ | Heavy Metals(As P b) | 0.001 | 0.0015 | ||
Burning loss, w/% | Anhydrous matter | Loss On Ignition | / | 7.0-8.5 (Anhydrous) | |
dihydrate | 24.5-26.5 | 24.5-26.5(Dihydrate) | |||
Hydrochloric acid insoluble, w/% ≤ | Hydrochloric Acid Insoluble | 0.05 | / | ||








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