Ruifan Brand Potassium Dihydrogen Phosphate
I. Product Definition and Core Specifications
Ruifan Brand Potassium Dihydrogen Phosphate is a high-concentration, chlorine-free phosphorus-potassium binary compound fertilizer with the chemical formula KH₂PO₄. The product usually meets or exceeds the national fertilizer-grade standard (GB/T 2321-2016), with core nutrient indicators: phosphorus pentoxide (P₂O₅) content ≥ 52%, potassium oxide (K₂O) content ≥ 34%, and total nutrient content exceeding 86%.
It appears as white crystals or powder, featuring full water solubility, quick-acting properties, and stable physical and chemical characteristics, suitable for agricultural and industrial fields requiring high-quality fertilizers.
II. Production Process and Product Positioning
Ruifan Brand products typically adopt mature industrial production routes, which may include:
Neutralization crystallization method: Produced through neutralization reaction of phosphoric acid with potassium hydroxide (or potassium carbonate), followed by concentration, crystallization, and drying. By controlling raw material purity and process parameters, products meeting the standard of agricultural premium grade can be manufactured.
Product positioning: The brand is mainly positioned as a high-quality fertilizer for the agricultural market, while also catering to some industrial uses. Its quality aims to provide a reliable and efficient source of phosphorus and potassium nutrients, balancing cost-effectiveness and performance.
III. Key Quality Indicators
In addition to basic nutrient content, the key indicators reflecting its quality include:
Purity: High-quality agricultural potassium dihydrogen phosphate usually has a purity (KH₂PO₄) of over 98%.
Water solubility: Fully soluble in water with low water-insoluble matter content (usually ≤ 0.2%), ensuring no clogging risk when used for foliar spraying or drip irrigation.
Impurity control: Strictly controls chloride ion (Cl⁻) content (premium grade requires ≤ 1.0%) and maintains low sodium ion (Na⁺) content to reduce potential salt damage risks to sensitive crops.
pH value: A 1% aqueous solution is slightly acidic (pH about 4.4-4.7), helping maintain fertilizer solution stability and crop absorption.
IV. Main Application Fields
Agricultural production (core application):
Foliar spraying: As an efficient topdressing fertilizer, it can quickly supplement phosphorus and potassium nutrients. Widely used in fruit trees, vegetables, cash crops, and field crops during flowering, young fruit, expansion, and color change stages, it plays roles in flower and fruit retention, promoting coloring, enhancing stress resistance (cold, drought, lodging resistance), and improving quality.
Water and fertilizer integration: A high-quality phosphorus-potassium raw material for formulating water-soluble fertilizers for drip irrigation and sprinkler irrigation.
Seed treatment: Used for seed soaking or dressing, it can improve seed germination potential and seedling vitality.
Industrial and auxiliary uses:
Can be used as a pH buffer or nutrient in certain specific chemical synthesis or cultivation processes.
Can serve as an intermediate raw material for phosphate production.
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