
Premium agricultural Manganese Sulfate Monohydrate: a stable manganese source for water-soluble and micronutrient fertilizer formulations
Ihumate Manganese Sulfate Monohydrate (MnSO4·H2O, CAS 10034-96-5) is a high-purity, fully water-soluble agricultural manganese fertilizer raw material with MnSO4·H2O > 98% and manganese (Mn) > 31%. The pale-pink to off-white powder grade is suitable for water-soluble fertilizers, compound fertilizers, foliar fertilizers, fertigation products and customized micronutrient blends.
1. Concentrated water-soluble manganese: manganese supports photosynthesis, chlorophyll formation, enzyme activation and nitrogen metabolism, making it important for correcting confirmed Mn deficiency in citrus, grapes, vegetables, legumes, cereals and cash crops.
2. Built for professional formulation: good solubility and uniform powder support quick dissolution, accurate dosing and blending. It can serve as the base manganese source for EDTA Mn, manganese glycinate, NPK micronutrient packs and liquid fertilizers.
3. Agronomically controlled use: manganese deficiency is common in high-pH, calcareous, sandy or high-organic-matter soils. Apply according to soil and tissue analysis rather than blind high-rate use.
4. The Ihumate advantage: batch control covers manganese, assay, insoluble matter, moisture, pH, appearance and dissolution performance, supported by COA, SDS, export documents, reliable supply, formulation support and OEM/ODM packaging.
Compatibility note: manganese salts may precipitate or lose availability in high-pH, hard-water, phosphate or carbonate systems. Run jar tests for new formulas and consider chelated manganese when higher stability is required.
| Technical Parameters | Detailed Specs | Testing Methods | Reference Standards |
|---|---|---|---|
| Appearance | Pale-pink to off-white powder | Visual inspection | - |
| Chemical Formula | MnSO4·H2O | - | - |
| CAS No. | 10034-96-5 | - | - |
| Manganese Sulfate Monohydrate (MnSO4·H2O) | > 98% | EDTA titration | - |
| Manganese (Mn) | > 31% | EDTA titration | - |
| Sulfur (S) | > 18% | Calculated value | - |
| Water Solubility | 100% | Visual and gravimetric method | - |
| Water-Insoluble Matter | < 0.1% | Gravimetric method | - |
| Moisture | < 0.5% | Oven drying | - |
| pH | 5.0-7.0 (1% solution) | pH meter | - |
Certificate of Analysis: Manganese Sulfate Monohydrate
TDS: Manganese Sulfate Monohydrate
MSDS: Manganese Sulfate Monohydrate
Heavy Metal Test Report: Manganese Sulfate Monohydrate
Need custom documents or specific test results?


More questions about our products?
For production of water-soluble fertilizers, compound fertilizers, foliar fertilizers, fertigation products and micronutrient premixes. Field use should be based on soil pH, tissue analysis, crop sensitivity and local label directions.
| Crop Name | Growth Stage | Application Ratio |
|---|---|---|
| Fertilizer formulation | WSF, compound, foliar or micronutrient premix | Calculate from Mn > 31% and target guaranteed analysis |
| Soil application | Confirmed manganese deficiency | Typically 5-20 kg/ha; adjust by soil pH and local advice |
| Foliar spray | Early deficiency or fast correction | 0.1%-0.3%; test crop safety first |
| Liquid fertilizer production | Mn-containing liquid or suspension formulas | Set by target Mn content, pH and compatibility tests |
Ihumate Manganese Sulfate Monohydrate combines high assay, good solubility and reliable batch management for fertilizer manufacturers and professional agricultural formulators.
MnSO4·H2O > 98% and Mn > 31% support accurate calculation of available manganese in fertilizer formulas.
Uniform powder supports water-soluble fertilizer, foliar fertilizer, compound fertilizer and micronutrient premix production.
Manganese contributes to photosynthesis, enzyme activation, nitrogen metabolism and stress response.
Batch COA, SDS, export documents, reliable supply, formulation advice and 1-25 kg OEM/ODM packaging are available.
Ihumate is backed by globally recognized certifications.
