Formulae KNO3 Molecular weight 101.10 CAS 7757-79-1 Properties Colorless and transparent rhombic crystals or white powder. Uses Mainly applied in TV kinescope glass, glass refining agent and motor light glass; compound fertilizer and foliar spray fertilizer for crop and flower; fireworks to produce purple flame and black powder in mine, ignition wire and firecracker; drugs as penicillian potassium salt in medicine industry and catalyzer; ceramic and enamel; salt bath of heat treatment, cigarette paper, concentrating agent; conservatives in salted meat and chromogen in Food industry, etc.Packing In 25/50/500/1000kg PP/PE bag or demanding of customer Storage In a cool, ventilated and dry house, away from moisture, heat or kindling. Avoid mixing with organic compound or sulphur or reducer during storage and transportation in case of explosion. Protect from the sun and rain during transportation. Carefully load and unload in case of crash. Specification Inspection ItemsUnitIndustrial GradeFirst GradeAgricultural GradePurity%≥99.899.497.5Moisture%≤0.100.10Chloride(as cl-)%≤0.01-0.030.020.80Sulphate(as SO42-)%≤0.010.01Insoluble Matter in Water%≤0.010.02Fe%≤0.003Hygroscopicity%≤0.250.30K2O%≥46Nitrogen(in nitrate)%≥13.5Particle SizeMM0.2-2.5 2-5