T/CPCIF 0062-2020 Agricultural Use of Potassium Sulfate

Scope

Main technical content: **Project Targets**: - Water-soluble potassium oxide (K2O) content (%) ≥ 52.0 - Sulfur (S) content (%) ≥ 17.0 - Water (H2O) content (%) ≤ 0.5 - Chloride ion (Cl-) content (%) ≤ 1.5 - pH value 6.0–8.0 - Water-insoluble matter content (%) ≤ 1.0 - Particle size (a/%) ≥ 90 - Total arsenic, mg/kg ≤ 2 - Total cadmium, mg/kg ≤ 10 - Total lead, mg/kg ≤ 50 - Total chromium, mg/kg ≤ 50 - Total mercury, mg/kg ≤ 2 - Total nickel, mg/kg ≤ 50 - Total thallium, mg/kg ≤ 2.5 a) For granular potassium sulfate, the particle size is 2.00mm–4.75mm. If the client has specific requirements for particle size, the contracted indicators shall prevail. No particle size requirements apply to powdered products. --- **Key Notes**: - Specifications are subject to the contractual terms. - The pH value should be within the specified range. - The water-soluble potassium oxide content must meet the minimum standard of 52.0%. - All heavy metal contents must comply with the specified limits. - Particle size requirements apply only to granular products. - Powdered products are exempt from particle size requirements. - All test methods and indicators comply with national and industry standards. --- **Translation Notes**: 1. Technical terms like "water-soluble potassium oxide (K2O)" and "sulfur (S)" are translated accurately to maintain scientific rigor. 2. Percentage and unit specifications are preserved in the translation to ensure clarity. 3. Contractual terms like "pH value 6.0–8.0" and "particle size (a/%)" are translated with emphasis on contractual compliance. 4. Heavy metal content limits (e.g., "total arsenic, mg/kg ≤ 2") are translated precisely to meet regulatory standards. 5. Particle size requirements for granular products are highlighted to differentiate from powdered products. 6. All specifications are formatted consistently with Chinese technical documentation conventions.

Development Information

Related Standards