1. The national standards for industrial or agricultural potassium chloride products are shown in the table below.

2. Potassium sulfate (industrial)

Because it is potassium bromide (photographic emulsions) and potassium iodide starting material, the purity of the product must be ensured, potassium content is higher (50%), iron, aluminum chloride (5%) and the organics were less good dryness .

Potassium oxide suitable as a potassium nitrate raw material, also suitable for the production of potassium nitrate potassium chloride:
Moisture: <3.0%
Purity: ≥55% (hydrated K2O)
Water insolubles: <1% (hydrated)
Xenogeneic chloride: <10.0% (hydrated NaCl)
Sulfate: <1.0% (hydrated SO3)
Calcium content: <0.5% (hydrated CaO)
Magnesium content: <0.5% (hydrated MgO)
pH: 5.0 to 10.0
Appearance: white

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