ARSENIC PENTASULPHIDE
Synonym(s):Arsenic pentasulfide;Diarsenic pentasulfide
- CAS NO.:1303-34-0
- Empirical Formula: As2S5
- Molecular Weight: 310.17
- MDL number: MFCD00049840
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-08-17 21:30:02
What is ARSENIC PENTASULPHIDE?
Chemical properties
ARSENIC PENTASULPHIDE is yellow or orange powder(s); stable in air up to 95°C; can be prepared by fusing As and S or by passing H2S through HCl solution of arsenic acid; used as a paint pigment, in light filters [HAW93] [KIR78]
Physical properties
Yellow-brown glassy amorphous solid; sublimes on heating; decomposes around 500°C; insoluble in cold water (~1.4 mg/L at 0°C); dissolves in alkalies and solutions of alkali metal sulfides, and in nitric acid.
The Uses of ARSENIC PENTASULPHIDE
ARSENIC PENTASULPHIDE is used for preparation of glasses with small gold additions posessing photoluminescent and conductive properties 1 Reactant for preparation of silver thioarsenate complex ethylenediammonium salt 2
The Uses of ARSENIC PENTASULPHIDE
In thin sheets as a light filter; in pigments.
The Uses of ARSENIC PENTASULPHIDE
- Used for preparation of glasses with small gold additions posessing photoluminescent and conductive properties
- Reactant for preparation of silver thioarsenate complex ethylenediammonium salt
What are the applications of Application
Arsenic(V) sulfide is a source of arsenic
Preparation
Arsenic pentasulfide is prepared by precipitation from an acidic solution of orthoarsenic acid, H3AsO4, or arsenic pentachloride, AsCl5 or any other soluble As(V) salt by passing hydrogen sulfide. It may be also prepared by heating a mixture of arsenic and sulfur, extracting the fused mass with ammonia solution and reprecipitating arsenic pentasulfide at low temperature by addition of HCl.
Production Methods
Arsenic(V) sulfide, As4S10, is produced by fusing stoichiometric quantities of As and S powder or by precipitation from highly acidic arsenate(V) solution with H2S.
Properties of ARSENIC PENTASULPHIDE
Melting point: | >300 °C (lit.) |
solubility | insoluble in H2O; soluble in alkaline solutions |
form | brown-yellow amorphous solid |
color | brown-yellow amorphous
solid |
Water Solubility | g/L solution H2O: 0.00136 (0°C) [KRU93] |
Merck | 13,807 |
CAS DataBase Reference | 1303-34-0 |
EPA Substance Registry System | Arsenic pentasulfide (1303-34-0) |
Safety information for ARSENIC PENTASULPHIDE
Signal word | Danger |
Pictogram(s) |
Skull and Crossbones Acute Toxicity GHS06 Environment GHS09 |
GHS Hazard Statements |
H410:Hazardous to the aquatic environment, long-term hazard |
Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P273:Avoid release to the environment. P391:Collect spillage. Hazardous to the aquatic environment P403+P233:Store in a well-ventilated place. Keep container tightly closed. |
Computed Descriptors for ARSENIC PENTASULPHIDE
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