Potassium Sulfate SOP 0-0-52
- Appearance: White powder or fine crystals
- Chemical Formula: K2SO4
- CAS Number: 7778-80-5
- Water-Soluble Potassium Oxide (K2O): > 52%
- Sulfur (S): > 18%
- Water Solubility: 100%
- Chloride (Cl): < 1.0%
- Water-Insoluble Matter: < 0.1%
- Moisture: < 0.5%
- pH: 5.0-8.0 (1% solution)
Reference price range:USD 600 - 970
Potassium Sulfate SOP 0-0-52
Premium agricultural Potassium Sulfate SOP 0-0-52: low-chloride potassium and sulfur nutrition for chloride-sensitive crops and premium fruit quality
Ihumate Potassium Sulfate (SOP, K2SO4, CAS 7778-80-5) is a high-purity, low-chloride, fully water-soluble potassium fertilizer raw material with water-soluble K2O > 52% and sulfur (S) > 18%. The white powder or fine crystal grade adds no intentional nitrogen, phosphorus or chloride, making it suitable for fertigation, hydroponics, sprinklers, foliar programs, and manufacture of water-soluble, liquid and high-potassium fertilizer formulas.
1. Clear 0-0-52 positioning: a stable potassium source for fruit sizing, color development, sugar-acid balance, dry-matter accumulation and post-harvest quality, with additional sulfur nutrition.
2. For chloride-sensitive crops: low chloride supports grapes, citrus, strawberry, potato, tobacco, tea and protected vegetables where chloride input must be limited.
3. Flexible formulation: nitrogen- and phosphorus-free analysis lets agronomists adjust N:P:K independently and blend with potassium nitrate, MKP, EDTA micronutrients, humic acid, amino acids and seaweed systems.
4. The Ihumate advantage: batch management covers K2O, sulfur, chloride, moisture, insolubles, pH, appearance and dissolution performance, backed by COA, SDS, export documents, dependable supply, formulation support and OEM/ODM packaging.
Compatibility note: sulfate can precipitate with calcium in concentrated stock solutions. Use A/B tanks for calcium-containing fertigation formulas or run a jar test before field use.
Potassium Sulfate SOP 0-0-52 Specifications
| Technical Parameters | Detailed Specs | Testing Methods | Reference Standards |
|---|---|---|---|
| Appearance | White powder or fine crystals | Visual inspection | - |
| Chemical Formula | K2SO4 | - | - |
| CAS Number | 7778-80-5 | - | - |
| Water-Soluble Potassium Oxide (K2O) | > 52% | Potassium tetraphenylborate gravimetry | - |
| Sulfur (S) | > 18% | Barium sulfate gravimetry | - |
| Water Solubility | 100% | Visual and gravimetric | - |
| Chloride (Cl) | < 1.0% | Silver nitrate titration | - |
| Water-Insoluble Matter | < 0.1% | Gravimetric method | - |
| Moisture | < 0.5% | Oven-drying method | - |
| pH | 5.0-8.0 (1% solution) | pH meter | - |
Potassium Sulfate SOP 0-0-52 Water-Soluble Fertilizer - Product Video
- Premium agricultural Potassium Sulfate SOP 0-0-52 white powder
- Solubility, particle size and OEM packaging presentation
COA, TDS, MSDS & HM Test Reports
Certificate of Analysis (COA)
Certificate of Analysis: Potassium Sulfate SOP 0-0-52
Technical Data Sheet (TDS)
TDS: Potassium Sulfate SOP 0-0-52
Safety Data Sheet (MSDS)
MSDS: Potassium Sulfate SOP 0-0-52
Heavy Metal Test Report
Heavy Metal Test Report: Potassium Sulfate SOP 0-0-52
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Frequently Asked Questions
1
Which crops suit Potassium Sulfate SOP 0-0-52?
It suits grapes, citrus, strawberry, tomato, pepper, cucumber, potato, tobacco, tea, coffee and flowers, especially during fruit sizing, color, quality formation and other high-potassium stages.
2
What is the difference between SOP and MOP?
SOP supplies potassium plus sulfur with low chloride, making it useful where chloride inputs are restricted. MOP is potassium chloride; it is economical but brings more chloride and is not ideal for every chloride-sensitive or salt-sensitive system.
3
Can SOP be mixed with calcium fertilizers?
Run a jar test for dilute working solutions. In concentrated stock tanks, do not directly mix SOP with calcium nitrate, calcium chloride or similar calcium salts because calcium sulfate precipitation may occur. Use A/B tanks for fertigation.
4
Can it be used as foliar potassium?
Yes where local labels allow it, but use low concentrations, avoid heat and intense light, and test crop safety on sensitive crops or new cultivars first.
5
Do the packaging-image specifications apply to this product?
No. Packaging images show Ihumate bag formats and OEM/ODM design only. Final guaranteed analysis, net weight, label and regulatory text follow the contract, batch COA, SDS and destination-market requirements.
6
Are you a trading company or a manufacturer?
We are a professional manufacturing enterprise. Our modern factory is located in Huozhou, Linfen, Shanxi, China. With an annual capacity of 500,000 tons, we invite global partners to visit our facility.
7
How do you perform quality control?
8
Do you provide samples?
9
What are the payment terms?
10
How can I track my shipment after payment?
11
What is the Minimum Order Quantity (MOQ)?
12
Can you customize packaging or print our logo?
13
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More questions about our products?
Application & Dosage: Potassium Sulfate SOP 0-0-52
For fertigation, hydroponics, sprinklers, validated foliar feeding, and production of high-potassium, low-chloride water-soluble and liquid fertilizers. Count both K2O and S in formulation calculations and adjust from crop demand, soil, irrigation-water and tissue analysis.
Agricultural Application
- Fertigation and Hydroponics:Split potassium and sulfur applications during fruit sizing, color and quality stages, correcting concentration from target EC, drainage and tissue analysis.
- Foliar Supplement:Apply an even low-concentration spray in the morning or evening outside high heat and intense light; test sensitive crops and new tank mixes first.
Fertilizer Manufacturing
- Low-Chloride High-K Formulas:Calculate inclusion from K2O > 52% and S > 18% for high-potassium NPK, WSF, liquid and suspension fertilizers.
- Compatibility Control:Validate water quality, pH, concentration, dissolution time, precipitation and storage stability; use A/B tanks in calcium systems.
Application Ratio Scheme
| Crop Name | Growth Stage | Application Ratio |
|---|---|---|
| Fertigation/Sprinklers | Fruit sizing, color and quality formation | 10-30 kg/ha per application; adjust to analysis and local program |
| Hydroponics/Soilless | Nutrient-solution preparation | Calculate from target K2O, S and EC; no fixed field rate |
| Foliar Spray | Potassium/sulfur supplement or quality improvement | 0.5%-1.5%; conduct a crop-safety test first |
| Fertilizer Production | WSF, liquid fertilizer and high-K NPK | Calculate from target K2O and S analysis |
Product Advantages: Potassium Sulfate SOP 0-0-52
Ihumate Potassium Sulfate SOP 0-0-52 supplies high potassium, low chloride and fully soluble sulfur for premium crop programs and professional fertilizer formulation.
1
High Potassium, Low Chloride
K2O > 52% with low chloride supports chloride-sensitive crops, protected cultivation and premium low-salt formulas.
2
Sulfur Nutrition Included
S > 18% supports protein synthesis, enzyme activity, aroma, flavor and market quality development.
3
No N or P Contribution
The 0-0-52 analysis allows independent potassium adjustment and easy blending with N, P, Ca, Mg and micronutrient sources.
4
Ihumate Batch and Export Support
Batch COA, solubility and impurity control, formulation guidance, dependable supply and OEM/ODM packaging support professional buyers.
Certifications: Potassium Sulfate SOP 0-0-52
Ihumate is backed by globally recognized certifications.
- 🏅 OMRI Listed – Approved for organic use (USDA/NOP standards)
- 🏅 CERES Certified – High-standard organic inputs for sustainable agriculture
- ✔ Excellent international production process with full batch traceability
- ✔ Meeting the strict demands of global distributors and formulators
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Join us at our 2026 exhibitions:
Event: Shanghai CAC (Fshow)
Booth: 12G05
Date: March 17-19, 2026
Address: No. 333 Songze Avenue, Qingpu District, Shanghai
Join us at our 2026 exhibitions:
Event: Shanghai CAC (Fshow)
Booth: 12G05
Date: March 17-19, 2026
Address: No. 333 Songze Avenue, Qingpu District, Shanghai
No. 64 Nangou, Chencun, Bailong Town, Huozhou City, Linfen City, Shanxi Province
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