Indium(III) sulfide

Indium(III) sulfide
Names
Other names
Indium sesquisulfide
Diindium trisulfide
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.031.571 Edit this at Wikidata
UNII
  • InChI=1S/2In.3S checkY
    Key: ZOMNDSJRWSNDFL-UHFFFAOYSA-N checkY
  • InChI=1/2In.3S/rIn2S3/c3-1-5-2-4
    Key: ZOMNDSJRWSNDFL-YYMIQOPKAJ
  • S=[In]S[In]=S
Properties
In2S3
Molar mass 325.82 g·mol−1
Appearance red powder
Density 4.90 g cm−3, solid
Melting point 1,050 °C (1,920 °F; 1,320 K)
insoluble
Hazards
GHS labelling:[1]
GHS07: Exclamation mark
Warning
H302+H332, H315, H319, H335
P280, P301+P330+P331, P302+P352, P304+P340, P312, P332+P313, P337+P313
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 3: Short exposure could cause serious temporary or residual injury. E.g. chlorine gasFlammability 4: Will rapidly or completely vaporize at normal atmospheric pressure and temperature, or is readily dispersed in air and will burn readily. Flash point below 23 °C (73 °F). E.g. propaneInstability 2: Undergoes violent chemical change at elevated temperatures and pressures, reacts violently with water, or may form explosive mixtures with water. E.g. white phosphorusSpecial hazards (white): no code
3
4
2
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
☒N verify (what is checkY☒N ?)

Indium(III) sulfide (Indium sesquisulfide, Indium sulfide (2:3), Indium (3+) sulfide) is the inorganic compound with the formula In2S3.

It has a "rotten egg" odor characteristic of sulfur compounds, and produces hydrogen sulfide gas when reacted with mineral acids.[2]

Three different structures ("polymorphs") are known: yellow, α-In2S3 has a defect cubic structure, red β-In2S3 has a defect spinel, tetragonal, structure, and γ-In2S3 has a layered structure. The red, β, form is considered to be the most stable form at room temperature, although the yellow form may be present depending on the method of production. In2S3 is attacked by acids and by sulfide. It is slightly soluble in Na2S.[3]

Indium sulfide was the first indium compound ever described, being reported in 1863.[4] Reich and Richter determined the existence of indium as a new element from the sulfide precipitate.

  1. ^ GHS: Alpha Aesar 045563
  2. ^ Indium Sulfide. indium.com
  3. ^ Indium Sulfide. indium.com
  4. ^ Reich, F.; Richter, Th. (1863). "Vorläufige Notiz über ein neues Metal". J. Prakt. Chem. (in German). 89: 441–448. doi:10.1002/prac.18630890156.