Cadmium selenide

Cadmium selenide
Unit cell, ball and stick model of cadmium selenide
Sample of nanocrystalline cadmium selenide in a vial
Names
IUPAC name
Selanylidenecadmium[2]
Other names
Cadmium(2+) selenide[1]
Cadmium(II) selenide[1]
, cadmoselite
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
ECHA InfoCard 100.013.772 Edit this at Wikidata
EC Number
  • 215-148-3
13656
MeSH cadmium+selenide
RTECS number
  • EV2300000
UNII
UN number 2570
  • InChI=1S/Cd.Se checkY
    Key: AQCDIIAORKRFCD-UHFFFAOYSA-N checkY
  • InChI=1/Cd.Se/rCdSe/c1-2
    Key: AQCDIIAORKRFCD-BBSQRNTLAE
  • [Se]=[Cd]
Properties
CdSe
Molar mass 191.385 g·mol−1
Appearance Black, translucent, adamantine crystals
Odor Odorless
Density 5.81 g cm−3[3]
Melting point 1,240 °C (2,260 °F; 1,510 K)[3]
Band gap 1.74 eV, both for hex. and sphalerite[4]
2.5
Structure
Wurtzite
C6v4-P63mc
Hexagonal
Hazards
GHS labelling:
GHS06: Toxic GHS08: Health hazard GHS09: Environmental hazard
Danger
H301, H312, H331, H373, H410
P261, P273, P280, P301+P310, P311, P501
NIOSH (US health exposure limits):
PEL (Permissible)
 [1910.1027] TWA 0.005 mg/m3 (as Cd)[5]
REL (Recommended)
 Ca[5]
IDLH (Immediate danger)
 Ca [9 mg/m3 (as Cd)][5]
Related compounds
Other anions
 Cadmium oxide,
Cadmium sulfide,
Cadmium telluride
Other cations
 Zinc selenide,
Mercury(II) selenide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
checkY verify (what is checkY☒N ?)

Cadmium selenide is an inorganic compound with the formula CdSe. It is a black to red-black solid that is classified as a II-VI semiconductor of the n-type. It is a pigment, but applications are declining because of environmental concerns.[6]

  1. ^ a b "cadmium selenide (CHEBI:50834)". Chemical Entities of Biological Interest (ChEBI). UK: European Bioinformatics Institute. IUPAC Names.
  2. ^ "cadmium selenide – PubChem Public Chemical Database". The PubChem Project. USA: Nation Center for Biotechnology Information. Descriptors Computed from Structure.
  3. ^ a b Haynes, William M., ed. (2011). CRC Handbook of Chemistry and Physics (92nd ed.). Boca Raton, FL: CRC Press. p. 4.54. ISBN 1-4398-5511-0.
  4. ^ Ninomiya, Susumu; Adachi, Sadao (1995). "Optical properties of cubic and hexagonal Cd Se". Journal of Applied Physics. 78 (7): 4681. Bibcode:1995JAP....78.4681N. doi:10.1063/1.359815.
  5. ^ a b c NIOSH Pocket Guide to Chemical Hazards. "#0087". National Institute for Occupational Safety and Health (NIOSH).
  6. ^ Langner, Bernd E. (2000). "Selenium and Selenium Compounds". Ullmann's Encyclopedia of Industrial Chemistry. doi:10.1002/14356007.a23_525. ISBN 3527306730.