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HomeProduct name listARSENIC (III) SELENIDE

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: 2024-08-17 21:30:02
ARSENIC (III) SELENIDE Structural

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)
ghs
Skull and Crossbones
Acute Toxicity
GHS06
ghs
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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