Manganese sulfide Chemical Properties

Melting point:

1610°C

Density 

3,99 g/cm³

vapor pressure 

0Pa at 25℃

Flash point:

280°C

solubility 

insoluble in H2O; soluble in dilute acid solutions

form 

Powder

Specific Gravity

3.99

color 

Green

Water Solubility 

0.47 mg/100 mL (18 ºc)

Crystal Structure

Hexagonal, Wurtzite (Zincite) Structure - Space Group P 63mc

Merck 

14,5740

Solubility Product Constant (Ksp)

pKsp: 9.60

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

CAS DataBase Reference

18820-29-6(CAS DataBase Reference)

EPA Substance Registry System

Manganese sulfide (MnS) (18820-29-6)

Safety Information

Hazard Codes 

Xi

Risk Statements 

36/37/38

Safety Statements 

26-36-24/25

RIDADR 

UN 3077 9 / PGIII

WGK Germany 

3

TSCA 

Yes

MSDS

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Manganese sulfide Usage And Synthesis

Description

Manganese(II) sulfide, MnS, occurs in nature as the mineral alabandite (isometric), rambergite (hexagonal), and the recently found browneite (isometric, with sphalerite-type, ZnS, structure, extremely rare and is only known from a meteorite). Manganese(II) sulfide can be formed through the reaction of a manganese(II) salt (such as manganese(II) chloride) with ammonium sulfide.

Chemical Properties

pink, green, or brownish green powder(s); three crystal(s) forms: α: green cub; β: red cub; γ: red hexagonal; used as an additive in steel production [HAW93] [MER06]

Physical properties

Habit: massive or granular.
Color: Brownish black to black, tarnish upon exposure to moist air.
Luster: submetallic.
Diaphaneity: opaque.
Cleavage: (110) perfect.
Fracture: uneven.
Streak: green.
Occurrence: epithermal sulfide vein deposits.

Uses

Additive in steel making.

Uses

it is used as an intermediate in chemical research& pharmaceutical research.

General Description

MnS can exist in three polymorphs; α,β,γ, of these, the α phase is most thermodynamically stable.

Flammability and Explosibility

Not classified

Structure and conformation

The crystal structure of manganese(II) sulfide is comparable to that of sodium chloride. The pink color of MnS is probably caused by poor coupling between the lowest energy unoccupied Mn orbitals, resulting in discrete states rather than a delocalized band. Consequently, the lowest energy band-to-band electronic transition requires very high-energy (ultraviolet) photons.

Manganese sulfide(18820-29-6)Related Product Information

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• MANGANESE SULFIDE 10G [R]
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