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Manganese sulfate monohydrate

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Manganese sulfate monohydrate Basic information

Product Name:
Manganese sulfate monohydrate
CAS:
10034-96-5
MF:
H2MnO5S
MW:
169.02
EINECS:
600-072-9
Mol File:
10034-96-5.mol
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Manganese sulfate monohydrate Chemical Properties

Melting point:
700 °C
Boiling point:
850 °C
Density 
2.95
storage temp. 
Store at RT.
solubility 
5-10 g/100 mL at 21°C
form 
Solid
color 
Pink
PH
3.0-3.5 (50g/l, H2O, 20℃)
Water Solubility 
5-10 g/100 mL at 21 ºC
Sensitive 
Hygroscopic
Merck 
14,5739
InChIKey
ISPYRSDWRDQNSW-UHFFFAOYSA-L
CAS DataBase Reference
10034-96-5(CAS DataBase Reference)
EPA Substance Registry System
Manganese(II) sulfate monohydrate (10034-96-5)
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Safety Information

Hazard Codes 
Xn,N
Risk Statements 
48/20/22-51/53
Safety Statements 
22-61
RIDADR 
UN 3077 9/PG 3
WGK Germany 
1
RTECS 
OP0893500
3
TSCA 
Yes
HazardClass 
9
HS Code 
28332990
Toxicity
LD50 orally in Rabbit: 2150 mg/kg

MSDS

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Manganese sulfate monohydrate Usage And Synthesis

Chemical Properties

Pale pink crystalline powder, slightly hygroscopic

Uses

Manganese sulfate monohydrate is used to produce manganese by an electrolytic process. The compound is used for dyeing textiles; for producing red glazes on porcelain; in varnish driers; in fertilizers; and in animal feeds to provide manganese as an essential trace element.

Uses

Manganese Sulfate is a source of manganese that functions as a nutrient and dietary supplement. It exists as a powder which is readily soluble in water.

Preparation

Manganese(II) sulfate is prepared by prolonged heating of any manganese salt with concentrated sulfuric acid. The compound is produced commercially from pyrolusite (MnO2) or rhodochrosite (MnCO3). Either mineral is dissolved in sulfuric acid and the solution evaporated:
MnO2 + H2SO4 → MnSO4 + H2O + ½ O2
Alternatively, manganese dioxide is heated strongly with dehydrated iron(II) sulfate:
2MnO2 + 2FeSO4 → 2MnSO4 + Fe2O3 + ½ O2
Manganese(II) sulfate, prepared by methods involving evaporation of manganese salt with sulfuric acid, is the tetrahydrate, MnSO4•4H2O. The tetrahydrate on gentle heating produces monohydrate, MnSO4•H2O.
Also, manganese(II) sulfate is a by-product in the manufacture of hydroquinone. The process involves reaction of aniline with manganese dioxide in sulfuric acid, followed by the removal of quinone by steam distillation under vacuum.
2C6H5NH2 (aniline) + 5H2SO4 + 4MnO2 → 2C6H4O2 + 4MnSO4 + 2C6H4O2 + 4MnSO4(quinone)
The unreacted acid is neutralized by lime, treated with water, and the solution filtered to separate any excess MnO2 and insoluble residues. Evaporation of the filtrate yields a crude product containing about 80% MnSO4 and 15% (NH4)2SO4.
Manganese(II) sulfate also may be produced by the action of sulfur dioxide with manganese dioxide:
MnO2 + SO2 → MnSO4

General Description

Odorless pale red slightly efflorescent crystals or light pink powder. pH (5% solution) 3.7.

Air & Water Reactions

Water soluble. Hygroscopic.

Reactivity Profile

Manganese(II) sulfate hydrate is incompatible with aluminum and magnesium.

Fire Hazard

Flash point data for Manganese(II) sulfate hydrate are not available; however, Manganese(II) sulfate hydrate is probably combustible.

Purification Methods

Crystallise it from water (0.9mL/g) at 54-55o by evaporating about two-thirds of the water. It dehydrates above 400o.

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Shanghai Aladdin Bio-Chem Technology Co.,LTD Gold
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Langfang pengcai fine chemical co., ltd. Gold
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J & K SCIENTIFIC LTD.
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Alfa Aesar
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Energy Chemical
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