Arsenic(III) sulfide
Arsenic(III) sulfide (CAS: 1303-33-9), with the chemical formula As2S3, is an inorganic compound that appears as a yellow to orange solid. It is known for its applications in chemical synthesis and as a component in certain catalytic processes. This compound has a molecular weight of 246.04 g/mol and is supplied by TSS with a purity of ≥99.9%. Its unique properties make it valuable in various inorganic chemistry research and development areas.

Chemical Synthesis
Arsenic(III) sulfide serves as a reagent in the synthesis of various arsenic-containing compounds and organoarsenic derivatives. It is a valuable building block for creating complex inorganic structures and functional materials.
Catalysis
This compound can be utilized as a precursor or component in catalytic systems. Its properties are explored in specific catalytic reactions within inorganic chemistry research, contributing to advancements in catalytic processes.
Inorganic Chemistry Research
Arsenic(III) sulfide is a subject of study in inorganic chemistry, investigating the properties and reactions of arsenic sulfides. It is used in laboratories for fundamental research and material science exploration.
| Molecular weight | 246.04 |
|---|---|
| Linear formula | As2S3 |
| Assay | ≥99.9% |
| Density | 3.43 g/mL at 25 °C(lit.) |
| Particle size | −325 mesh |
| Melting point | 300 °C(lit.) |
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P273Avoid release to the environment
- P301IF SWALLOWED
- P311Call a POISON CENTER or doctor
- P501Dispose of contents and container per local regulations
| Transport (UN / ADR) | UN 1557 6.1/PG 2 |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | T,N |
| Risk statements (R) | 23/25-50/53 |
| Safety statements (S) | 20/21-28.1-45-60-61 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Arsenic(III) sulfide used for?
+
Arsenic(III) sulfide is used in chemical synthesis, as a component in catalysis, and for research in inorganic chemistry.
What is the CAS number and formula for Arsenic(III) sulfide?
+
The CAS number for Arsenic(III) sulfide is 1303-33-9, and its chemical formula is As2S3.
What grade and purity does Tech Serve Solutions supply?
+
Tech Serve Solutions supplies Arsenic(III) sulfide with an assay of ≥99.9%. This product is not intended for pharmaceutical, food, or diagnostic use and is not represented as USP, BP, or EP grade.
How is Arsenic(III) sulfide handled and stored?
+
Arsenic(III) sulfide is toxic and an environmental hazard. Handle with appropriate personal protective equipment in a well-ventilated area. Avoid release into the environment. Store in a tightly closed container in a cool, dry place, away from incompatible materials.
Can I request a sample of Arsenic(III) sulfide?
+
Yes, you can request a sample or a quote for Arsenic(III) sulfide through our website or by contacting our sales team directly.
How is Arsenic(III) sulfide packed and shipped?
+
Arsenic(III) sulfide is packed according to UN 1557 specifications for dangerous goods, class 6.1, packing group II. TSS is an experienced global exporter, ensuring compliant packaging and shipping procedures.
▶ Related products

Benzeneruthenium(II) chloride dimer
Ru2(C6H6)2Cl4
Catalysis & Inorganic
Benzoylferrocene
C17H14FeO
Catalysis & Inorganic
Benzyldiphenylphosphine
C6H5CH2P(C6H5)2
Catalysis & Inorganic
Beryllium
Be
Catalysis & Inorganic
Beryllium oxide
BeO
Catalysis & Inorganic![Bicyclo[2.2.1]hepta-2,5-diene-rhodium(I) chloride dimer — chemical structure, CAS 12257-42-0; Catalysis & Inorganic, fine chemical supplied by Tech Serve Solutions](/_next/image?url=https%3A%2F%2Fpub-f4d920c906024441a773a96f7098e551.r2.dev%2Fimages%2Fproducts%2F12257-42-0.png&w=3840&q=75)
Bicyclo[2.2.1]hepta-2,5-diene-rhodium(I) chloride dimer
Catalysis & Inorganic
![Bis[(10,11-η)-5-[(11bS)-dinaphtho[2,1-d:1′,2′-f][1,3,2]dioxaphosphepin-4-yl- κP4]-5H-dibenz[b,f]azepine]rhodium(I) tetrafluorobo — chemical structure, CAS 1228149-03-8; Catalysis & Inorganic, fine chemical supplied by Tech Serve Solutions](/_next/image?url=https%3A%2F%2Fpub-f4d920c906024441a773a96f7098e551.r2.dev%2Fimages%2Fproducts%2F1228149-03-8.png&w=3840&q=75)
Bis[(10,11-η)-5-[(11bS)-dinaphtho[2,1-d:1′,2′-f][1,3,2]dioxaphosphepin-4-yl- κP4]-5H-dibenz[b,f]azepine]rhodium(I) tetrafluorobo
1-d:1′
Catalysis & Inorganic![Bis[(2-dimethylamino)phenyl]amine nickel(II) chloride (C16H20ClN3Ni) — chemical structure, CAS 1033772-47-2; Catalysis & Inorganic, fine chemical supplied by Tech Serve Solutions](/_next/image?url=https%3A%2F%2Fpub-f4d920c906024441a773a96f7098e551.r2.dev%2Fimages%2Fproducts%2F1033772-47-2.png&w=3840&q=75)
Bis[(2-dimethylamino)phenyl]amine nickel(II) chloride
C16H20ClN3Ni
Catalysis & Inorganic▶ Explore more

3-Methyl-1,5-di-p-tolyl-1,4-pentazadiene
Chemical Synthesis

3-Methyl-1,5-pentanediol
Chemical Synthesis

3-Methyl-1-(2-methylphenyl)-1H-pyrazol-5-amine
C11H13N3
Chemical Synthesis
3-Methyl-1-(3′-sulfoamidophenyl)-5-pyrazolone
C10H11N3O3S
Chemical Synthesis