Monopotassium Phosphite 0-58-38
- Appearance: White crystalline powder
- Chemical Formula: KH2PO3
- CAS No.: 13977-65-6
- Total Analysis: 0-58-38
- Phosphite Phosphorus (P2O5): > 58%
- Potassium Oxide (K2O): > 38%
- Water Solubility: 100%
- Water-Insoluble Matter: < 0.1%
- Chloride (Cl): < 0.05%
- Moisture: < 0.5%
- pH: 4.0-6.0 (1% solution)
Reference price range:USD 2000 - 2900
Monopotassium Phosphite 0-58-38
Premium agricultural Monopotassium Phosphite 0-58-38: dual fertilizer and fungicide-program raw material
Ihumate Monopotassium Phosphite (KH2PO3, CAS 13977-65-6) is a high-purity, fully water-soluble functional agricultural raw material with a 0-58-38 analysis, P2O5 > 58% and K2O > 38%. The white crystalline powder is designed for water-soluble fertilizers, foliar fertilizers, fertigation products, liquid fertilizers and functional stress-management formulas.
1. Fertilizer value: high potassium supports sugar transport, fruit sizing, color, firmness and stress tolerance. Phosphite has strong mobility in plants and can support fast crop response.
2. Fungicide-program value: phosphite can activate plant defense responses and is widely used in programs managing pressure from oomycete diseases such as Phytophthora, downy mildew, root rot and stem-base rot. Any pesticidal claim must follow destination-market registration rules.
3. 0-58-38 formula advantage: nitrogen-free P-K input fits vegetative control, flowering, fruiting, coloring, pre-harvest quality programs and premium fertigation formulas.
4. The Ihumate advantage: batch control covers P2O5, K2O, insoluble matter, moisture, pH, chloride, appearance and dissolution performance, backed by COA, SDS, export documents, dependable supply, formulation support and OEM/ODM packaging.
Compatibility note: phosphite is not a full replacement for regular phosphate nutrition. Avoid direct concentrated mixing with calcium, magnesium, copper, strong alkaline materials and oxidizers. Jar-test pesticide or micronutrient mixes and use A/B tanks where needed.
Monopotassium Phosphite 0-58-38 Specifications
| Technical Parameters | Detailed Specs | Testing Methods | Reference Standards |
|---|---|---|---|
| Appearance | White crystalline powder | Visual inspection | - |
| Chemical Formula | KH2PO3 | - | - |
| CAS No. | 13977-65-6 | - | - |
| Total Analysis | 0-58-38 | Calculated value | - |
| Phosphite Phosphorus (P2O5) | > 58% | Spectrophotometry | - |
| Potassium Oxide (K2O) | > 38% | Flame photometry | - |
| Water Solubility | 100% | Visual and gravimetric method | - |
| Water-Insoluble Matter | < 0.1% | Gravimetric method | - |
| Chloride (Cl) | < 0.05% | Silver nitrate titration | - |
| Moisture | < 0.5% | Oven drying | - |
| pH | 4.0-6.0 (1% solution) | pH meter | - |
Monopotassium Phosphite 0-58-38 - Product Introduction Video
- Agricultural Monopotassium Phosphite 0-58-38 white crystalline powder
- Fertilizer value, disease-pressure management, solubility and OEM packaging presentation
COA, TDS, MSDS & HM Test Reports
Certificate of Analysis (COA)
Certificate of Analysis: Monopotassium Phosphite 0-58-38
Technical Data Sheet (TDS)
TDS: Monopotassium Phosphite 0-58-38
Safety Data Sheet (MSDS)
MSDS: Monopotassium Phosphite 0-58-38
Heavy Metal Test Report
Heavy Metal Test Report: Monopotassium Phosphite 0-58-38
Download Support
Need custom documents or specific test results?
Frequently Asked Questions
1
Is Monopotassium Phosphite 0-58-38 a fertilizer or a fungicide product?
It is a functional raw material with both nutrition and disease-management value. It supplies potassium and phosphite-form phosphorus and can activate plant defenses. If marketed with pesticidal claims, local registration rules apply.
2
How is monopotassium phosphite different from MKP?
MKP is a phosphate P-K fertilizer mainly used for phosphorus and potassium nutrition. Monopotassium phosphite supplies phosphite, which is more associated with plant-defense activation, strong mobility and disease-pressure management.
3
Which crops use it most?
Grapes, citrus, strawberry, tomato, cucumber, pepper, potato, banana, avocado, nuts and ornamentals often use phosphite programs, especially under oomycete disease pressure and during fruit-quality stages.
4
Can it be mixed with calcium or copper products?
Avoid direct concentrated mixing. With calcium, magnesium, copper, alkaline products, oxidizers, pesticides or micronutrients, run a jar test first and use A/B tanks when needed.
5
Do the packaging-image specifications apply?
No. Packaging images show Ihumate bag formats and OEM/ODM capability only. Final guaranteed analysis, net weight 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: Monopotassium Phosphite 0-58-38
For WSF, foliar fertilizers, fertigation products, liquid fertilizers, stress-management formulas and disease-pressure programs. Count 0-58-38, P2O5 > 58% and K2O > 38% in formulation calculations and adjust from disease pressure, crop stage, pH, EC, water hardness and registration requirements.
Fertilizer Manufacturing
- 0-58-38 Functional Module:Calculate inclusion from P2O5 > 58% and K2O > 38% for premium WSF, foliar, fertigation and liquid fertilizers.
- Dual-Action Formula Development:Combine with seaweed, amino acids, humic acid, micronutrients or biocontrol products for rooting, stress, fruit setting, quality and disease-pressure programs.
Agricultural Application
- Flowering and Fruiting Value:Apply split programs before flowering, at fruit set, fruit sizing, coloring and pre-harvest to support sugar transport, firmness, color and quality.
- Disease-Pressure Management:Use preventively before high-risk periods for Phytophthora, downy mildew, root rot and stem-base rot, together with drainage, airflow, rotation and registered crop-protection tools.
Application Ratio Scheme
| Crop Name | Growth Stage | Application Ratio |
|---|---|---|
| Fertilizer formulation | WSF, foliar, fertigation or liquid fertilizer | Calculate from P2O5 > 58%, K2O > 38% and target guaranteed analysis |
| Fertigation/Soil drench | Pre-flowering, fruit set, sizing or disease-risk periods | 2-6 kg/ha per application; adjust by crop, EC and local program |
| Foliar spray | Flowering, fruiting, coloring or before disease pressure | 0.1%-0.3%; test crop safety first |
| Liquid fertilizer production | Functional stress or disease-pressure formulas | Run solubility, pH, low-temperature and storage-stability tests first |
Product Advantages: Monopotassium Phosphite 0-58-38
Ihumate Monopotassium Phosphite 0-58-38 delivers high potassium, mobile phosphite, clean solubility and controlled batches for dual fertilizer and disease-management formulas.
1
0-58-38 High P-K Analysis
P2O5 > 58% and K2O > 38% provide nitrogen-free P-K input for fruit quality, coloring and controlled growth programs.
2
Dual Fertilizer and Fungicide-Program Value
Potassium supports crop quality, while phosphite supports plant-defense activation and oomycete disease-pressure management.
3
Strong Mobility and Uptake
Phosphite moves well in plant tissues, fitting foliar spray, fertigation and premium water-soluble fertilizer systems.
4
Ihumate Export and OEM Support
Batch COA, SDS, export documents, reliable supply, formulation advice and 1-25 kg OEM/ODM packaging are available.
Certifications: Monopotassium Phosphite 0-58-38
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
Ihumate Global Exhibition Videos
We showcase our Humic Acid, Seaweed, Liquid Fertilizer, and Bio-control series globally.
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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