SOP Soluble

Description

1. Product Overview

SOP Soluble is a fully water-soluble, chloride-free potassium sulfate fertilizer engineered for precision fertigation and foliar application in high-value agriculture. Its primary industrial use is to supply immediately bioavailable potassium and sulfur during crop critical growth stages—flowering, fruit set, and bulking—without the phytotoxic risks of chloride. The key value proposition is maximizing nutrient use efficiency (NUE) and crop quality (Brix, size, shelf life) while preventing salinization of irrigation systems and soil. Strategically, this product is essential as global acreage of protected cultivation and deficit-irrigated cash crops expands, where standard SOP’s dissolution lag drives emitter clogging and yield loss.

2. Key Specifications & Technical Characteristics

• Chemical composition: K₂SO₄ (minimum 99.5% purity on dry basis); K₂O content: 50.0%–52.0%; S content: 17.5%–18.0%; Chloride (Cl): <1.0%

• Purity grade: Agricultural soluble grade (meets GMP+ and ISO 22241-2 impurity limits for N, Na, heavy metals)

• Physical characteristics: White crystalline powder; 100% passing through 0.5 mm mesh; particle density 1.1–1.3 g/cm³; bulk density 0.9–1.1 kg/L; neutral pH (6.5–7.5 in 1% solution)

• Solubility: >120 g/L at 20°C; >150 g/L at 30°C; clear solution with <0.01% insoluble residue

• Packaging options: 25 kg multi-layer PE-lined kraft bags; 600 kg jumbo bags; 1,200 kg bulk tote; anti-caking additive applied by request

• Shelf life: 36 months in unopened, dry, UV-protected storage; no caking or hygroscopic degradation

3. Core Industrial Applications

• Protected horticulture (greenhouses & net houses): Used daily/weekly in drip and NFT systems for tomatoes, peppers, cucumbers, and berries. Outperforms standard SOP because complete solubility prevents nozzle and dripper clogging, reducing maintenance downtime by 80% compared to technical-grade SOP.

• High-value field crops (potatoes, onions, citrus, almonds): Applied via pivot or micro-sprinkler at tuber bulking and fruit sizing. Efficiency advantage: Chloride-free formulation avoids leaf edge burn and reduces irrigation frequency by 10–15% due to lower osmotic shock relative to MOP.

• Foliar nutrition programs (grapes, pome fruit, coffee): Tank-mixed with micronutrients and plant growth regulators. Cost advantage: Higher K₂O load per liter than potassium thiosulfate or potassium nitrate at comparable sulfur levels, cutting foliar application passes by up to two per season.

4. Competitive Advantages

• Quality consistency: Lot-to-lot coefficient of variation <1.5% for K₂O and solubility; third-party SGS/Intertek certificate provided per shipment.

• Supply reliability: Dedicated production line (non-co-located with MOP) ensuring zero chloride cross-contamination; 50,000 MT annual export capacity with 24/7 load planning.

• Logistics capability: Bagged or bulk loading from 4 strategic port hubs (NW Europe, Black Sea, SE Asia, US Gulf) with lead times ≤14 days for contract volumes.

• Price competitiveness: Direct mine-to-market integration removes trader markups; pricing formula linked to Rotterdam spot SOP minus USD 15–20/MT for scale buyers.

• Sustainability: 94% water recovery in production; zero process discharge; compliant with EU Fertilizing Product Regulation (FPR) 2019/1009.

• Technical support: Full solubility curves, mixer compatibility charts, and fertigation scheduling software (web-based) provided with first purchase.

5. Commercial & Supply Information

• Minimum order quantity (MOQ): BULK 20MT (one flexibag or 20′ FCL floor-loaded jumbo bags)

• Loading capacity per container:

  • 20′ standard container: 20–22 MT (depending on packaging: 20 MT for 25 kg bags palletized; 22 MT for jumbo bags)

  • 40′ high-cube container: 25 MT (palletized 25 kg bags) — subject to axle weight limits for inland trucking

• Incoterms offered: FOB, CFR, CIF, EXW (production site)

• Lead time: 10 days after order confirmation for 20–500 MT; 21 days for 500+ MT