Water-soluble / specialty fertilizers
Manganese Sulphate — Soluble Mn Micronutrient for Fertigation & Foliar
FOB Black Sea / MENA · CFR/CIF worldwide on request
Indicative price
USD 230–280 / MT
Indicative range, firm quote on request
Key parameters
Full product details
Product overview
Manganese sulphate monohydrate (MnSO₄·H₂O) is the workhorse soluble manganese source for agriculture — delivering 32% Mn and 18% S in a single fully dissolving salt. Manganese activates photosynthetic enzymes and lignin synthesis; deficiency appears as interveinal chlorosis on young leaves, grey speck in oats and reduced pollen viability in tree crops. Unlike oxide or carbonate carriers, the sulphate form releases Mn²⁺ ions immediately upon dissolution, making it suitable for drip injection, pivot fertigation and rapid foliar correction.
Production origins include Chinese and Indian micronutrient complexes, Eastern European sulphate plants and toll blenders in the MENA corridor. The crystalline monohydrate grade resists caking when moisture stays below 0.5% and ships in 25 kg laminated bags or 1,000 kg big bags for greenhouse cooperatives, liquid-fertilizer formulators and national distributors building seasonal micronutrient inventory.
Primary buyers include cereal growers on calcareous Black Sea and Central Asian steppe soils where Mn lock-up is chronic, citrus and stone-fruit exporters in the Mediterranean and South America correcting Mn on sandy rootstocks, and soluble-blend plants incorporating Mn into water-soluble NPK micronutrient packages for protected-culture markets. HS code 2833.29.
Full specification
| Manganese (Mn) | 32.0% min (monohydrate basis) |
| Sulphur (S) | 18.0% min |
| Water solubility | 99% min at 20 °C |
| Water insoluble | 0.05% max |
| Moisture | 0.5% max |
| pH (5% solution) | 4.0–6.0 typical |
| Lead (Pb) | 20 mg/kg max |
| Cadmium (Cd) | 5 mg/kg max |
| Form | Pink to pale pink crystalline powder (monohydrate) |
| HS code | 2833.29 |
Loading ports & logistics
Manganese sulphate ships in bagged container lots from 200 MT minimum — typically 20 ft containers at 24–26 MT payload with palletized 25 kg bags. Larger programmes above 500 MT can load breakbulk from Chinese and Indian east-coast ports, or container-block trains through Black Sea and MENA transhipment hubs. FOB load ports include Qingdao, Nhava Sheva, Novorossiysk and Jebel Ali.
CFR and CIF quotations add ocean freight and marine insurance to nominated discharge ports — common destinations include Istanbul, Alexandria, Mombasa, Karachi and Ho Chi Minh City. Lead time is 10–20 days from payment instrument confirmation to first day of laycan for ex-stock grades; forward production slots may add 2–3 weeks during peak micronutrient export season (Q1–Q2).
Store under cover away from alkaline materials and moisture. Manganese sulphate is compatible with standard agricultural packaging but hygroscopic above 70% relative humidity — specify PE-lined bags and container desiccants for tropical discharge climates.
Packaging & documentation
Standard export packing: 25 kg PP bags with PE inner liner, 40 bags per pallet, shrink-wrapped. Big-bag option at 1,000 kg net for bulk handling at destination blend plants. Each lot ships with a mill certificate of analysis covering Mn, S, moisture, heavy metals and solubility. SGS or equivalent pre-shipment inspection available on request.
Document set: commercial invoice, packing list, bill of lading, certificate of origin. Payment: irrevocable LC at sight or CAD for first-time buyers; established accounts may negotiate open-account terms. Specify bag artwork, language and Mn declaration format at enquiry — EU and Gulf buyers often require heavy-metal limits on the COA.
FAQ
When should buyers choose manganese sulphate over chelated manganese EDTA?
Manganese sulphate is the economical choice where irrigation water pH stays below 7.0 and manganese is injected through drip or pivot lines at acidic working concentrations. EDTA- or DTPA-chelated Mn is justified on alkaline calcareous soils above pH 7.5 where free Mn²⁺ precipitates before reaching the root zone — specify chelated forms only when soil or water tests confirm that constraint.
Which crops show manganese deficiency before others?
Cereals on high-pH calcareous soils — especially oats and barley — develop pale interveinal chlorosis on young leaves first. Stone fruit, citrus and soybean on sandy, over-limed or peat soils follow. In greenhouse tomato and pepper, Mn deficiency appears as mottled upper leaves when pH in the substrate exceeds 6.5 and iron competes for uptake.
Can manganese sulphate be mixed with phosphate fertilizers in one stock tank?
No in concentrated form. Mn²⁺ and phosphate ions form insoluble manganese phosphate when combined above 0.5% total salt concentration. Use separate injection lines or sequential dosing — inject manganese sulphate after phosphate-containing solutions have diluted in the main irrigation stream.
Related products
- NPK + Micronutrients — granular compound with Zn, B, S and Mn in one application pass
- Water-soluble NPK — fertigation macronutrients compatible with soluble micronutrient side-dressing
- Magnesium Nitrate — paired secondary nutrient for greenhouse A/B tank programmes