TECH potassium sulfate SOP(0-0-51) Chemical Name: potassium sulfate Other Name: Chemical Formula: K2SO4 Physical properties: With an appearance of white crystal Specification:ContentK2O: ≥51So4≥56CL≤0.8% INSOLUBLES≤0.1% H2O: ≤0.5%Uses: high-concentration nitrogen & phosphorus compound fertilizer, Package: woven bag lined with plastic bag, net weight: 25kg,50 kg /barrel.