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Description

Manganese(II) sulphate monohydrate · CAS 10034-96-5 · MnSO4.H2O. UNII W00LYS4T26. Melting Point: 400-450 °C; Melting Point: 700 °C; Solubility: 50 to 100 mg/mL at 70 °F (NTP, 1992).

Identification

CAS Registry Number	10034-96-5
PubChem CID	177577
Molecular formula	MnSO4.H2O
IUPAC name	manganese(2+);sulfate;hydrate
UNII (FDA)	W00LYS4T26

Computed Descriptors

Molecular Weight	169.02
Hydrogen Bond Donor Count	1
Hydrogen Bond Acceptor Count	5
Rotatable Bond Count	0
Exact Mass	168.900337
Monoisotopic Mass	168.900337
Topological Polar Surface Area	89.6
Heavy Atom Count	7
Formal Charge	0
Complexity	62.2

Physical & Chemical Properties

Melting Point	400-450 °C
Melting Point	700 °C
Solubility	50 to 100 mg/mL at 70 °F (NTP, 1992)
Density	3.25 @25 °C

Physical description & handling notes

• Manganese(ii) sulfate monohydrate appears as odorless pale red slightly efflorescent crystals or light pink powder. pH (5% solution) 3.7. (NTP, 1992)
• Dry Powder; Other Solid; Dry Powder; Liquid; Liquid
• Light red solid; Slightly efflorescent; [Merck Index] Pink hygroscopic solid; [ICSC] Light red hygroscopic powder; [Aldrich MSDS]
• PINK HYGROSCOPIC CRYSTALS.
• greater than 752 °F (NTP, 1992)
• Solubility in water, g/100ml: 76.2 (freely soluble)

Regulatory Status

GHS notification summary	0.1% (2 / 1512)

GHS Hazard Classification

GHS notification summary	0.1% (2 / 1512)
Reported hazard statements	H373 (99.7%), H411 (99.7%), H302, H318, H341, H360, H372

Documented Uses

• Used in dyes, boiling oils for varnishes, fertilizers (vines and tobacco), animal feeds (essential trace element), red glazes on porcelain, and medicines (prevention of perosis in poultry); [Merck Index] Used in paints, varnishes, textile dyes, fungicides, medications, ceramics, foods (nutrient and dietary supplement), ore flotation, and synthetic manganese dioxide; Also used as a catalyst (viscose process); [NTP]
• Painting (Pigments, Binders, and Biocides) [Category: Paint]
• Textiles (Printing, Dyeing, or Finishing) [Category: Industry]
• Metal Extraction and Refining [Category: Industry]
• Farming (Feed Additives) [Category: Industry]
• Ceramics making [Category: Hobbies]

Synonyms

10034-96-5; Manganese(II) sulfate monohydrate; MANGANESE SULFATE MONOHYDRATE; MnSO4.H2O; Manganous sulfate monohydrate; Manganese(2+) sulfate monohydrate; DTXSID4020795; Manganese sulfate (USP); CHEBI:86364; Sulfuric acid, manganese(2+) salt (1:1) monohydrate; RefChem:889804; DTXCID00795; 600-072-9; Manganese sulfate (MnSO4) monohydrate; Manganese, monosulfate, monohydrate; 15244-36-7

Frequently Asked Questions

What are the CAS number and molecular formula of Manganese(II) sulphate monohydrate?

CAS 10034-96-5; molecular formula MnSO4.H2O; molecular weight — g/mol.

What other names is Manganese(II) sulphate monohydrate known by?

10034-96-5, Manganese(II) sulfate monohydrate, MANGANESE SULFATE MONOHYDRATE, MnSO4.H2O, Manganous sulfate monohydrate, Manganese(2+) sulfate monohydrate.

Is Manganese(II) sulphate monohydrate classified as hazardous?

0.1% of GHS notifications report no hazard classification (2 of 1512).

What are the key physical properties of Manganese(II) sulphate monohydrate?

Melting Point: 400-450 °C; Melting Point: 700 °C; Solubility: 50 to 100 mg/mL at 70 °F (NTP, 1992); Density: 3.25 @25 °C.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.