Chromium(III) sulfide

Identifiers

CAS Number

* 12018-22-3 Y

EC Number |

* 234-638-8

PubChem CID

* 159397

Properties

Chemical formula

| Cr2S3
Molar mass | 200.19 g/mol
Appearance  | Brown to black powder
Odor | odorless
Density | 3.77 g/cm3
Melting point | 1350 °C

Solubility in water

| insoluble

Magnetic susceptibility (χ)

| +2390.0·10−6 cm3/mol
Hazards
Safety data sheet | [1]
NFPA 704 (fire diamond)  |

NIOSH (US health exposure limits):

PEL (Permissible)

| TWA 1 mg/m3[1]

REL (Recommended)

| TWA 0.5 mg/m3[1]

IDLH (Immediate danger)

| 250 mg/m3[1]
Related compounds

Other anions

| Chromium(III) oxide
Chromium(III) telluride

Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Y verify (what is YN ?)
Infobox references

Chromium(III) sulfide is the inorganic compound with the formula Cr2S3. It is a brown-black solid. Chromium sulfides are usually nonstoichiometric compounds, with formulas ranging from CrS to Cr0.67S (corresponding to Cr2S3).

## Preparation

Chromium(III) sulfide can be prepared through the reaction of a stoichiometric mixture of the elements at 1000 °C[2]

2 Cr+3 S⟶Cr2S3

It is a solid that is insoluble in water. According to X-ray crystallography, its structure is a combination of that of nickel arsenide (1:1 stoichiometry) and Cd(OH)2 (1:2 stoichiometry). Some metal-metal bonding is indicated by the short Cr-Cr distance of 2.78 Å.[3]

## See also

* Brezinaite, a mineral with the formula Cr3S4

## References

1. ↑ 1.0 1.1 1.2 NIOSH Pocket Guide to Chemical Hazards. "#0141". National Institute for Occupational Safety and Health (NIOSH). https://www.cdc.gov/niosh/npg/npgd0141.html.
2. ↑ Georg Brauer: Handbuch der präparativen anorganischen Chemie. 3., umgearb. Auflage. Band III. Enke, Stuttgart 1981, ISBN 3-432-87823-0, S. 1493
3. ↑ Jellinek, F. "The structures of the Chromium Sulphides" Acta Crystallographica 1957, volume 10, p620-p628 doi:10.1107/S0365110X57002200

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* t
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Chromium compounds

Chromium(0)|

* Cr(CO)6

| Organochromium(0) compounds|

* Cr(C6H6)2
* CrC6H6(CO)3

|

Chromium(II)|

* Cr(C2H3O2)2
* CrBr2
* Cr3C2
* Cr(C2O4)
* CrCl2
* CrF2
* CrO
* CrSe
* CrSi2
* CrSO4

| Organochromium(II) compounds|

* Cr(C5H5)2

|

Chromium(II, III)|

* Cr3C2

Chromium(III)|

* Cr(C2H3O2)3
* CrB
* CrBr3
* CrCl3
* CrF3
* CrI3
* CrN
* Cr(NO3)3
* Cr(OH)3
* Cr2O3
* Cr2S3
* Cr2(SO4)3
* Cr2Te3

Chromium(IV)|

* CrCl4
* CrF4
* CrO2

Chromium(V)|

* CrF5
* K3Cr(O2)4

Chromium(VI)|

* CrO3
* CrS3
* CrO(O2)2
* H2CrO4/H2Cr2O7
* CrO2F2
* CrO2Cl2
* C5H5NHCrO3Cl
* CrF6 (hypothetical)

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Sulfides

| H2S
H2S2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | He

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Li2S | BeS |  |  |  |  |  |  |  |  |  |  | B2S3 | CS2
COS | (NH4)SH | O | F | Ne
Na2S
Na2Sx | MgS |  |  |  |  |  |  |  |  |  |  | Al2S3 | SiS
SiS2 | PxSy | S | Cl | Ar
K2S | CaS | Sc2S3 | TiS2 | V | CrS
Cr2S3 | MnS
MnS2 | FeS
Fe3S4 | CoS | NiS | Cu2S
CuS | ZnS | GaS
Ga2S3 | GeS
GeS2 | As2S3
As4S3 | SeS2 | Br | Kr
Rb2S | SrS | Y2S3 | ZrS2 | NbS2 | MoS2 | Tc | Ru | Rh2S3 | PdS | Ag2S | CdS | In2S3 | SnS
SnS2 | Sb2S3
Sb2S5 | TeS2 | I | Xe
Cs2S | BaS | *  | HfS2 | TaS2 | WS2
WS3 | ReS2
Re2S7 | Os | Ir2S3
IrS2 | PtS
PtS2 | Au2S
Au2S3 | HgS | Tl2S | PbS
PbS2 | Bi2S3 | Po | At | Rn
Fr | Ra | **  | Rf | Db | Sg | Bh | Hs | Mt | Ds | Rg | Cn | Nh | Fl | Mc | Lv | Ts | Og |  |  |  |  |  |  |  |
|  | ↓ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| * | La2S3 | CeS
Ce2S3 | Pr2S3 | Nd2S3 | Pm2S3 | SmS
Sm2S3 | Eu2S3 | Gd2S3 | Tb2S3 | Dy2S3 | Ho2S3 | Er2S3 | Tm2S3 | Yb2S3 | Lu2S3 |
| ** | Ac | ThS2 | Pa | US2 | Np | Pu | Am | Cm | Bk | Cf | Es | Fm | Md | No | Lr |

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