Beryllium sulfide

Short description: Chemical compound

Beryllium sulfide

Identifiers

CAS Number

* 13598-22-6

3D model (JSmol)

* Interactive image

ChemSpider |

* 44415277

EC Number |

* 237-064-6

PubChem CID

* 83605

InChI

* InChI=1S/Be.S

Key: FQDSYGKTHDFFCM-UHFFFAOYSA-N

SMILES

* [Be+2].[S-2]

Properties

Chemical formula

| BeS
Molar mass | 41.077 g/mol
Appearance  | white crystalline
Density | 2.36 g/cm3
Melting point |  1,800 °C (3,270 °F; 2,070 K) decomposes

Solubility in water

| Decomposes
Band gap | 7.4 eV

Refractive index (nD)

| 1.741
Structure

Crystal structure

| cubic

Space group

| F43m[1]
Thermochemistry

Heat capacity (C)

| 34 J/mol K

Std molar
entropy (S ~~o~~ 298)

| 34 J/mol K

Std enthalpy of
formation (ΔfH⦵298)

| −235 kJ/mol
Hazards
NIOSH (US health exposure limits):

PEL (Permissible)

| TWA 0.002 mg/m3
C 0.005 mg/m3 (30 minutes), with a maximum peak of 0.025 mg/m3 (as Be)[2]

REL (Recommended)

| Ca C 0.0005 mg/m3 (as Be)[2]

IDLH (Immediate danger)

| Ca [4 mg/m3 (as Be)][2]

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

Infobox references

Tracking categories (test):

* SizeSet

Beryllium sulfide (BeS) is an ionic compound from the sulfide group with the formula BeS. It is a white solid with a sphalerite structure that is decomposed by water and acids.[3]

## Preparation

Beryllium sulfide powders can be prepared by the reaction of sulfur and beryllium in a hydrogen atmosphere by heating the mixture for 10-20 minutes at temperatures from 1000-1300 °C. If done at 900 °C, there is beryllium metal impurities.[4]

Alternatively, it can be prepared by the reaction of beryllium chloride and hydrogen sulfide at 900 °C.[3][4]

## References

1. ↑ Eugene Staritzky (1956). "Crystallographic Data. 121. Beryllium Sulfide, BeS" (in en). Analytical Chemistry 28 (5): 915. doi:10.1021/ac60113a045.
2. ↑ 2.0 2.1 2.2 NIOSH Pocket Guide to Chemical Hazards. "#0054". National Institute for Occupational Safety and Health (NIOSH). https://www.cdc.gov/niosh/npg/npgd0054.html.
3. ↑ 3.0 3.1 Kenneth A. Walsh (2009). Beryllium Chemistry and Processing. ASM International. p. 127. ISBN 978-087170721-5. https://books.google.com/books?id=3-GbhmSfyeYC&pg=PA127.
4. ↑ 4.0 4.1 William Zachariasen (1926). "Die Kristallstrunkturen von Berylliumoxyd und Berylliumsulfid" (in de). Zeitschrift für Physikalische Chemie 119U (1): 201–213. doi:10.1515/zpch-1926-11921.

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Beryllium compounds

* Be(BH4)2
* BeBr2
* BeCO3
* BeCl2
* BeF2
* BeH
* BeH2
* BeI2
* Be(N3)2
* Be(NO3)2
* BeO
* Be(OH)2
* BeS
* BeSO3
* BeSO4
* BeTe
* Be2C
* Be3N2

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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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