MAGNESIUM SULFIDE Property

Melting point:

>2000°C (dec.)

Density 

2,84 g/cm³

solubility 

reacts with H2O

form 

red-brown cubic crystals

color 

red-brown cubic crystals, crystalline

Water Solubility 

decomposes in H2O [HAW93]

Crystal Structure

NaCl type

crystal system

Cube

Space group

Fm3m

Lattice constant

a/nm	b/nm	c/nm	α/o	β/o	γ/o	V/nm3
0.52037	0.52037	0.52037	90	90	90	0.1409

EPA Substance Registry System

Magnesium sulfide (MgS) (12032-36-9)

Safety

Risk Statements 

32

Safety Statements 

7/8

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

Precautionary statements

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

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

P302+P352IF ON SKIN: wash with plenty of soap and water.

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

P332+P313IF SKIN irritation occurs: Get medical advice/attention.

P337+P313IF eye irritation persists: Get medical advice/attention.

MAGNESIUM SULFIDE Chemical Properties,Usage,Production

Chemical Properties

Red-brown, crystalline solid.decomposes in water.

Chemical Properties

Magnesium Sulfide is a red-brown, crystalline solid, decomposes above 2000 C, decomposes in water.

Physical properties

MgS is a white crystalline material but is often encountered in an impure form that is a brown noncrystalline powder.
The chemical properties of MgS resemble those of related ionic sulfides such as those of Na, Ba, and Ca.
Magnesium Sulfide reacts with oxygen to form the corresponding sulfate, magnesium sulfate. MgS reacts with water to give hydrogen sulfide and magnesium hydroxide.

Uses

Magnesium Sulfide is the source of hydrogen sulfide, laboratory reagent.

Preparation

Magnesium Sulfide can be prepared by the direct reaction of the elements, calcined in an inert atmosphere, at a 1:1.1 molecular ratio:
Mg＋ S＋ heat→MgS
MgS also forms by the reaction of hydrogen sulfide gas with soluble magnesium salts in solution.
Aside from being a component of some slags, MgS is a rare nonterrestial mineral “niningerite” detected in some meteorites. Magnesium sulfide is available commercially from a number of suppliers.