| Identification | More | [Name]
CADMIUM SELENIDE | [CAS]
1306-24-7 | [Synonyms]
CADMIUM SELENIDE
cadmiumselenide(cdse)
Cadmium selenide Coating quality Balzers
Cadmium selenide,(99.999+%-Cd)
Cadmiumselenidemetalsbasisblackpowder
Lumidot CdSe/ZnS 610
CADMIUM SELENIDE COATING QUALITY BALZER&
CADMIUM SELENIDE, CA. 10 MICRON, 99.99%, ELECTRONIC GRADE
Lumidot(TM) CdSe/ZnS 595
Lumidot# CdSe-6, quantum dot nanoparticles kit, core type
Lumidot CdSe/ZnS 630
99.995%(metalsbasis)
CADMIUM SELENIDE ULTRAPURE, 99.99%
Cadmiumselenide(99.999+%-Cd)PURATREM
cadmium selemide
CADMIUM SELENIDE: (99.999%-CD), METALS BASIS
Cadmium selenide, 99.995% (metals basis)
Cadmium selenide, 99.999% (metals basis) | [EINECS(EC#)]
215-148-3 | [Molecular Formula]
CdSe | [MDL Number]
MFCD00010917 | [Molecular Weight]
191.37 | [MOL File]
1306-24-7.mol |
| Chemical Properties | Back Directory | [Melting point ]
>1350°C | [density ]
5.81 g/mL at 25 °C(lit.)
| [refractive index ]
2.87 (900 nm) | [storage temp. ]
2-8°C | [solubility ]
insoluble in H2O | [form ]
granular
| [color ]
Brown-red to black | [Specific Gravity]
5.81 | [Water Solubility ]
Insoluble in water. | [Crystal Structure]
Hexagonal, Wurtzite (Zincite) Structure - Space Group P 63mc | [Sensitive ]
air sensitive, store cold | [Merck ]
14,1626 | [Exposure limits]
ACGIH: TWA 0.01 mg/m3; TWA 0.002 mg/m3; TWA 0.2 mg/m3
NIOSH: IDLH 9 mg/m3; IDLH 1 mg/m3; TWA 0.2 mg/m3 | [Stability:]
store cold | [CAS DataBase Reference]
1306-24-7(CAS DataBase Reference) | [EPA Substance Registry System]
Cadmium selenide (CdSe) (1306-24-7) |
| Hazard Information | Back Directory | [Chemical Properties]
3–12mm pieces (sintered), and -325 mesh 10μm or less with 99.999% purity; white to brown; cub or hexagonal crystal(s); hex: a=0.4309nm, c=0.7021 nm, enthalpy of fusion 305.307 kJ/mol; becomes red in sunlight; used as a red pigment, in semiconductors, and as an evaporation material and sputtering target to produce photoconductive films and infrared filters; possible use in the electrofabrication of microdiode arrays [HAW93] [MER06] [CER91] [KLE93] [KRE91] | [Uses]
In photoconductors, semiconductors, photoelectric cells, and rectifiers; in phosphors. | [Physical properties]
The energy gap of the hexagonal CdSe obtained from the absorption measurement Eg (Γ6–Γ1 ) is Eg=1.84 eV, temperature coefficient -4.6×10-4 eV/K, and pressure coefficient 3.7×10-6 eV/kg–cm -2 .
The band structure of cubic CdSe is similar to that of GaAs. | [Application]
Cadmium selenide is used as a photoconductive detector for λ: 0.3–0.72 mm (a sharp peak at 0.7 mm) at room temperature. The typical performances are as follows:
Peak detectivity: 2.1×1011 cm Hz1/2/watt, (λ: 0.7 mm)
Response time: ca. 12 ms
Intermittent frequency: 90 Hz
Dominant noise: current noise
| [Definition]
ChEBI: Cadmium selenide is a cadmium molecular entity. | [Production Methods]
A single crystal can be grown artificially through the vapor phase method or the Stockbarger method.
To obtain evaporated films, the source materials are heated in the alumina crucible with a nichrome heater. Crystal with a larger grain size is obtained at a higher substrate temperature.
The following corrosives are reported:
HNO3 (water cleansing after 2–3 s)
H2SO4 (water cleansing after 5–10 s)
18 N solution of 30 HNO3:0.1 HCl:20 H2SO4 (40℃, 8 s, cleansing with concentrated H2SO4)
3 HCl:1 HNO3
| [General Description]
CdSe crystal can exist in solid hexagonal or cubic structure. CdSe behaves as an n-type semiconductor, with a bandgap of 1.74 eV (300K).1 | [Flammability and Explosibility]
Notclassified | [Structure and conformation]
The space lattice of CdSe (Cadmium selenide) belongs to the two types of crystal system, the cubic system, with the zinc-blend type structure that has a lattice constant of a=0.605 nm, and the hexagonal system, with the wurtzite type structure that has lattice constants of a=0.430 nm and c=0.702 nm.
|
| Safety Data | Back Directory | [Hazard Codes ]
T,N | [Risk Statements ]
R21:Harmful in contact with skin.
R23/25:Toxic by inhalation and if swallowed .
R33:Danger of cumulative effects.
R50/53:Very Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment . | [Safety Statements ]
S36/37:Wear suitable protective clothing and gloves .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S60:This material and/or its container must be disposed of as hazardous waste .
S61:Avoid release to the environment. Refer to special instructions safety data sheet . | [RIDADR ]
UN 2570 6.1/PG 3
| [WGK Germany ]
3
| [RTECS ]
EV2300000
| [TSCA ]
Yes | [HazardClass ]
6.1 | [PackingGroup ]
II | [HS Code ]
28429090 |
|
| Company Name: |
Alfa Aesar
|
| Tel: |
400-6106006 |
| Website: |
http://chemicals.thermofisher.cn |
|