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    Natural Potassium Nitrate Industrial grade (Powder \Granular)

    Application: Applied in industries such as fireworks, charcoal gunpowder, matches, medicine, catalyst ,and porcelain and ceremics as well as CRT shell, optical glass, high-quality glassware crafts.

    Standard: GB/T1918-2011

    Item Unit Top grade First grade Qualified
    products
    Potassium nitrate's (KNO3) mass fraction % ≥ 99.7 99.4 99.0
    Moisture 's mass fraction % ≤ 0.10 0.20 0.30
    Carbonate's (in K2CO3) mass fraction % ≤ 0.01 0.01 -
    Sulfate's (in SO4) mass fraction % ≤ 0.005 0.01 -
    Chloride's (measured as Cl) mass fraction % ≤ 0.01 0.02 0.10
    Water-insoluble 's mass fraction % ≤ 0.01 0.02 0.05
    Moisture absorption rate % ≤ 0.25 0.30 -
    Iron (Fe) 's mass fraction % ≤ 0.003 - -

     

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