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Item Indicator High-class products First-class products Conforming products K2CO3≥ 99.0%(WT) 99.0%(WT) 98.5%(WT) KCL≤ 0.01% 0.03% 0.20% K2SO4≤ 0.01% 0.04% 0.15% Fe≤ 0.001% 0.002% 0.004% Water insoluble≤ 0.02% 0.03% 0.05% Cauma vector≤ 0.60% 0.80% 1.00% Granularity 1.4mm residue on sieve≤ 180um residue on sieve≥ 1.0% 90.0% 1.0% 85.0% 1.0% 85.0% Stacking density≥ 1.3g/ml 1.29g/ml 1.2g/ml Packaging and storage: Inner layer of polyethylene plastic bags, external plastic woven bag, net weight 50kg or 25kg. Stored in ventilated and dry warehouse, not in the cargo shed or outdoor storage, should pay attention to moisture. Ensure anti-rain when transport and load. Can not be shipped and stored mixed with acids. Uses: for glass, printing and dyeing, soap, enamel, preparation of potassium, ammonia decarbonylation, is also used in color TV industry Quality standard: potassium carbonate (industrial grade) chemicals industry standard HG / T 2522-93; potassium carbonate (food grade) Chemical industry standard HG 2452-93