THALLIUM (I) SULFIDE Property

Melting point:

448.5°

Boiling point:

1367°C

Density 

8.39

solubility 

slightly soluble in alkaline solutions; soluble in acid solutions

form 

blue-black crystals

color 

blue-black crystals, crystalline

Water Solubility 

slightly soluble H2O, alkali hydroxides, sulfides, cyanides; soluble mineral acids [MER06]

Merck 

13,9341

crystal system

Three sides

Space group

R3

Solubility Product Constant (Ksp)

pKsp: 20.30

Lattice constant

a/nm	b/nm	c/nm	α/o	β/o	γ/o	V/nm3
1.212	1.212	1.8175	90	90	120	2.3121

EPA Substance Registry System

Thallium sulfide (Tl2S) (1314-97-2)

Safety

Hazard Codes 

T+,N

Risk Statements 

26/28-33-51/53

Safety Statements 

13-28-45-61

RIDADR 

UN 1707 6.1/PG 2

WGK Germany 

3

HazardClass 

6.1(a)

PackingGroup 

II

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H373May cause damage to organs through prolonged or repeated exposure

H411Toxic to aquatic life with long lasting effects

Precautionary statements

P273Avoid release to the environment.

P314Get medical advice/attention if you feel unwell.

THALLIUM (I) SULFIDE Chemical Properties,Usage,Production

Chemical Properties

Blue-black, lustrous, microscopic crystals or amorphous powder. Soluble in mineral acids; insoluble in water, alcohol, or ether.

Uses

Thallium sulfide (Tl2S) is used to make infrared-sensitive photoelectric cells and as a pesticide.

Uses

Infrared-sensitive photocells.