Manganese(II) sulfate monohydrate Property

Melting point:

700 °C

Boiling point:

850 °C

Density 

2.95

storage temp. 

Store at +15°C to +25°C.

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

Exposure limits

ACGIH: TWA 0.02 mg/m3; TWA 0.1 mg/m3
OSHA: Ceiling 5 mg/m3
NIOSH: IDLH 500 mg/m3; TWA 1 mg/m3; STEL 3 mg/m3

InChIKey

ISPYRSDWRDQNSW-UHFFFAOYSA-L

LogP

-1.031 (est)

CAS DataBase Reference

10034-96-5(CAS DataBase Reference)

EPA Substance Registry System

Manganese(II) sulfate monohydrate (10034-96-5)

Safety

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

F 

3

TSCA 

Yes

HazardClass 

9

PackingGroup 

III

HS Code 

28332990

Toxicity

LD50 orally in Rabbit: 2150 mg/kg

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H318Causes serious eye damage

H373May cause damage to organs through prolonged or repeated exposure

H411Toxic to aquatic life with long lasting effects

Precautionary statements

P260Do not breathe dust/fume/gas/mist/vapours/spray.

P273Avoid release to the environment.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P314Get medical advice/attention if you feel unwell.

P391Collect spillage. Hazardous to the aquatic environment

Manganese(II) sulfate monohydrate Chemical Properties,Usage,Production

Chemical Properties

Pale pink crystalline powder, slightly hygroscopic

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.

Uses

Manganese(II) sulfate monohydrate is used as a colorant in dyes, fertilizers, animal feeds and red glazes on porcelain. Further, it is used in paints, ceramics, nutrient and dietary supplement. It is involved in the preparation of manganese dioxide. In addition, it serves as a precursor to manganese metal and other manganese compounds.

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.

Definition

ChEBI: Manganese(II) sulfate monohydrate is a hydrate that is the monohydrate form of manganese(II) sulfate. It has a role as a nutraceutical. It is a hydrate, a manganese molecular entity and a metal sulfate. It contains a manganese(II) sulfate.

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.

Biochem/physiol Actions

Manganese sulfate has various industrial applications such as dyeing, porcelain glazing, and the manufacture of fertilizers and boiling oils. MnSO4 is used as a source of manganese ion in biological research, such as in culturing of Bacillus licheniformis and the induction of chromosomal abnormalities in plants. MnSO4 has been utilized to investigate the enzyme dependent glycosylation of endogenous glycoproteins in human skeletal muscle.

Purification Methods

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