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ARSENIC (III) SELENIDE

Basic information Safety Supplier Related

ARSENIC (III) SELENIDE Basic information

Product Name:
ARSENIC (III) SELENIDE
Synonyms:
  • Arsenicselenideblackxtl
  • diarsenictriselenide
  • Diarsenictriselenide(As2Se3)
  • diarsenictriselenide(asse3)
  • Arsenic(III) selenide lump
  • Arsenic(III) selenide 99.999%
  • Arsenic(III) selenide (As2Se3)
  • Arsenic(III) selenide, 99.999% trace metals basis
CAS:
1303-36-2
MF:
As2Se3
MW:
386.72
EINECS:
215-119-5
Product Categories:
  • metal chalcogenides
Mol File:
1303-36-2.mol
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ARSENIC (III) SELENIDE Chemical Properties

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)
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Safety Information

Hazard Codes 
T,N
Risk Statements 
23/25-50/53
Safety Statements 
20/21-28-45-61-60
RIDADR 
1557
RTECS 
CG2285000
TSCA 
Yes
HazardClass 
6.1
PackingGroup 
II

MSDS

  • Language:English Provider:ALFA
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ARSENIC (III) SELENIDE Usage And Synthesis

Chemical Properties

black crystal(s); dark brown solid; preparation: from melted As and Se; uses: vacuum deposition [CER91] [STR93] [MER06]

Uses

Arsenicselenide is used as a chalcogenide glass for infrared optics, as it transmits light with wavelengths between 870 nm and 17.2 μm.

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.

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.

Safety Profile

Low toxicity by ingestion. Whenheated to decomposition it emits toxic vapors of As andSe.

ARSENIC (III) SELENIDESupplier

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