ARSENIC (III) SELENIDE
- CAS NO.：1303-36-2
- Empirical Formula: As2Se3
- Molecular Weight: 386.72
- MDL number: MFCD00014166
- EINECS: 215-119-5
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-12-18 14:07:02
What is ARSENIC (III) SELENIDE?
Chemical properties
black crystal(s); dark brown solid; preparation: from melted As and Se; uses: vacuum deposition [CER91] [STR93] [MER06]
The Uses of ARSENIC (III) SELENIDE
Arsenicselenide is used as a chalcogenide glass for infrared optics, as it transmits light with wavelengths between 870 nm and 17.2 μm.
Definition
Arsenic tri-selenide takes amorphous or glassy material. Strong absorption bands are observed when As2O3 is incorporated into the source materials or As2O3 is formed during fabrication by oxidetion. As2O3 takes the cubic system, the monoclinic system, and the glassy state. The strong absorption bands are observed at 1050, 805, and 480 cm-1 for the cubic crystal system, at 1100, 805 cm-1 for the monoclinic crystal system and at 805 and 630 cm-1 for the glassy material. The absorptions in the transmittance spectrum T2 agree with either of these absorption bands.
Production Methods
As and Se are encapsuled into a quartz tube in vacuum and the tube is put into a rocking furnace. The capsule is heated at the temperature slightly higher than the melting point and rocked to mix each component completely followed by slow cooling.
Safety Profile
Low toxicity by ingestion. Whenheated to decomposition it emits toxic vapors of As andSe.
Properties of ARSENIC (III) SELENIDE
| Melting point: | 360°C |
| Density | 4,75 g/cm3 |
| solubility | insoluble in H2O; soluble in alkaline solutions |
| form | crystal |
| Specific Gravity | 4.75 |
| color | black |
| Water Solubility | Soluble in nitric acid. Insoluble in water. |
| Merck | 14,805 |
| Exposure limits | ACGIH: TWA 0.01 mg/m3; TWA 0.2 mg/m3 NIOSH: IDLH 5 mg/m3; IDLH 1 mg/m3; TWA 0.2 mg/m3; Ceiling 0.002 mg/m3 |
| CAS DataBase Reference | 1303-36-2(CAS DataBase Reference) |
| EPA Substance Registry System | Arsenic selenide (As2Se3) (1303-36-2) |
Safety information for ARSENIC (III) SELENIDE
| Pictogram(s) |
 Skull and Crossbones Acute Toxicity GHS06  Environment GHS09 |
| GHS Hazard Statements |
H330:Acute toxicity,inhalation H400:Hazardous to the aquatic environment, acute hazard H410:Hazardous to the aquatic environment, long-term hazard |
| Precautionary Statement Codes |
P260:Do not breathe dust/fume/gas/mist/vapours/spray. P284:Wear respiratory protection. P320:Specific treatment is urgent (see … on this label). P304+P340:IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing. P405:Store locked up. |
Computed Descriptors for ARSENIC (III) SELENIDE
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