Description
1. Product Overview
SOP Soluble TC is a fully water-soluble, high-purity potassium sulfate formulation engineered for precision fertigation and foliar application in high-value agriculture. Designed to deliver chlorine-free potassium and readily available sulfate sulfur, it directly addresses crop nutrition during peak demand stages—flowering, fruit set, and bulking. With rising global pressure on fertilizer efficiency and soil health, this product offers a strategic lever for agribusinesses seeking to maximize yield quality, reduce input waste, and meet export-grade residue standards.
2. Key Specifications & Technical Characteristics
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Chemical composition: Potassium (K₂O) – 52% min; Sulfur (S) – 17% min; Chlorine – <1.5%
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Purity level: 99.5% water-soluble crystalline powder (TC grade)
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Physical characteristics: White, free-flowing crystalline powder; 100% passing through 100 mesh; bulk density ~1.1 g/cm³
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pH (1% solution): 5.5–7.0 (neutral, compatible with most crop protection products)
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Solubility: 120 g/L at 20°C — fully soluble without residue or nozzle clogging
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Packaging options: 25 kg laminated HDPE bags with inner liner; 1 MT jumbo bags; custom client branding available for container orders
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Shelf life: 36 months when stored in dry, ambient conditions (<40°C, <70% RH)
3. Core Industrial Applications
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Primary industries: High-value row crops (tomato, pepper, strawberry), tree crops (citrus, avocado, almond, coffee), greenhouse vegetables, and open-field specialty crops (potato, onion, grape).
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Operational use cases:
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Fruit enlargement & color development: Applied via drip irrigation 3–4 weeks pre-harvest to boost brix and skin firmness.
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Stress mitigation: Foliar application during heat or salinity stress to maintain osmotic balance.
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Chloride-sensitive crops: Tobacco, berry fruits, and leafy greens requiring zero chloride to avoid leaf burn and yield depression.
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Performance advantage vs. alternatives: Unlike standard SOP or MOP, SOP Soluble TC delivers 100% solubility with <0.5% insoluble residue, enabling uninterrupted drip lines and precise dosing. Compared to potassium thiosulfate, it provides sustained sulfur availability without phytotoxicity risk.
4. Competitive Advantages
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Quality consistency: Batch-to-batch ICP-OES certification; guaranteed chlorine ≤1.5%; every shipment traceable to production lot.
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Supply reliability: Dual-sourced raw material (German potash and dead-sea brine) with 50,000 MT annual dedicated blending capacity.
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Logistics capability: Port-to-plant delivery in 20–25 days ex‑warehouse Rotterdam, Houston, Shanghai, or Jebel Ali.
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Price competitiveness: Volume-based tiered pricing within 5% of industry benchmark indexes (CRU, Profercy) with fixed 90-day options for contract buyers.
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Sustainability: Zero liquid discharge production process; ISO 14001-certified facility; low carbon footprint per MT vs. conventional thermal SOP.
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Technical support: Full SDS, fertigation compatibility matrix, and agronomic recommendation sheets in 6 languages; crop-specific calculator available.
5. Commercial & Supply Information
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Minimum Order Quantity (MOQ): BULK 20 MT (flexible to 15 MT for initial trial, subject to credit approval)
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Loading capacity: 20 MT per 20’ dry container (palletized: 18 MT; bulk bags: 20 MT net)
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Incoterms supported: FOB, CIF, CFR, EXW
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Lead time: 10 days for spot orders; recurring monthly deliveries available under supply agreement
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Compliance: Meets EU Fertilizing Product Regulation 2019/1009 and equivalent standards for US, Brazil, India, and GCC markets








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