Manganese sulfate

Manganese sulfate (CAS 7785-87-7), also sold as manganous sulfate, is an inorganic manganese salt; a concentrated, bioavailable source of manganese.

Where is Manganese sulfate used?

• Agriculture: corrects manganese deficiency in crops through foliar sprays and soil amendments
• Agriculture: acts as a catalyst for chlorophyll synthesis, promoting plant growth and increasing production; applied to soil or as a foliar treatment in no-till farming and standard irrigation systems.
• Feed and premix: trace mineral source in livestock and poultry nutrition
• Feed and premix: used as a feed supplement in dairy, poultry, and swine diets to support bone growth and reproductive health; monohydrate form serves as an additive in veterinary medicines for animal care.
• Battery and electronics: precursor in the synthesis of electrolytic manganese dioxide and cathode materials
• Water treatment: supports oxidation processes for iron and manganese removal from potable water
• It functions as a micronutrient supplement, catalyst precursor, and process chemical depending on the sector.

Good to know: Recognized grades include feed-grade, fertilizer-grade, and technical-grade, with food-grade and pharmaceutical-grade material meeting FCC, USP, Ph. Eur., BP, EP, or ACS standards.

Formulation notes

• Agricultural applications typically target a manganese content of about 32%, whereas industrial applications such as lithium-ion battery production require ultra-high purity of 99.9% or higher.

Typical specification

• The monohydrate is fully water-soluble.
• The monohydrate typically contains 31.8% manganese.
• Manganese sulfate content is at least 98%.
• Water-insoluble matter is at most 0.1%.

Regulatory status

• For transport, assigned to UN hazard class 9 and UN packing group III.
• The UN number is 3077.
• The hazard class is 9.
• Not subject to restriction under EU REACH.

Storage, packaging and handling

• Should be stored dry, well closed, in an area without drains or sewer access.

Frequently asked questions about Manganese sulfate

What particle size distribution does manganese sulfate typically have?

At least 95.0% of the product passes a 250 µm mesh.

What is the regulatory status of manganese sulfate under EU REACH regarding SVHC and Annex listings?

It is not classified as a substance of very high concern, and manganese and its compounds are not listed in Annex XVII (restrictions) or Annex XIV (authorizations) of REACH.

What assay range does the European Pharmacopoeia require for manganese sulfate?

The European Pharmacopoeia requires an assay range of 99.0–101.0% for manganese sulfate.

Technical content is compiled and updated by the SoleChem product team from public technical sources; the certificate of analysis (COA) governs product-specific specifications.