Arsenic(III) oxide
Arsenic(III) oxide (CAS: 1327-53-3, Formula: As2O3) is a highly pure, white crystalline powder with a molecular weight of 197.84 g/mol. Supplied as an ACS reagent grade (primary standard), its assay is 99.995% on a trace metals basis. This compound is crucial in various chemical synthesis pathways, inorganic chemistry, and materials science research, serving as a key precursor and reagent in specialised applications.
- IUPAC
- Arsenic trioxide,Arsenous acid,Diarsenic trioxide;
- Synonyms
- Arsenic trioxideArsenous acidDiarsenic trioxide
Chemical Synthesis
Arsenic(III) oxide is employed as a reagent in the synthesis of various organoarsenic compounds and other inorganic arsenic derivatives. It serves as a crucial building block in developing new materials and complex chemical structures.
Catalysis and Inorganic Chemistry
This compound functions as a precursor in the preparation of arsenic-containing catalysts and other inorganic materials. Its controlled reactivity makes it valuable for specific catalytic processes and fundamental inorganic research.
Materials Science
Utilised in materials science for the development of specialised glasses, semiconductors, and other advanced materials. The unique properties of arsenic oxides can impart specific optical or electronic characteristics to the final products.
Analytical Standards
With its high purity (99.995%), Arsenic(III) oxide is suitable for use as a primary standard in analytical chemistry. It is employed for calibration and quality control in trace element analysis.
| Molecular weight | 197.84 |
|---|---|
| Empirical formula | As2O3 |
| Assay | 99.995% trace metals basis |
| Grade | ACS reagent (primary standard) |
| Form | powder |
Hazard statements
- H300Fatal if swallowed
- H314Causes severe skin burns and eye damage
- H350May cause cancer
- H410Very toxic to aquatic life with long-lasting effects
Precautionary statements
- P201Obtain special instructions before use
- P264Wash thoroughly after handling
- P273Avoid release to the environment
- P280Wear protective gloves, clothing and eye/face protection
- P301IF SWALLOWED
- P305IF IN EYES
| Protective equipment | Eyeshields, Faceshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges |
|---|---|
| Transport (UN / ADR) | UN 1561 6.1 / PGII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | T+,N |
| Risk statements (R) | 45-28-34-50/53 |
| Safety statements (S) | 53-45-60-61 |
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) oxide used for?
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Arsenic(III) oxide is used in chemical synthesis, catalysis, inorganic chemistry, materials science, and as an analytical standard.
What is the CAS number and formula for Arsenic(III) oxide?
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The CAS number is 1327-53-3 and the molecular formula is As2O3.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Arsenic(III) oxide in ACS reagent grade (primary standard) with an assay of 99.995% on a trace metals basis. We do not represent this product as USP, BP, or EP grade.
What are the safety and handling considerations for Arsenic(III) oxide?
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Arsenic(III) oxide is a dangerous substance classified with GHS05, GHS06, GHS08, and GHS09 symbols, and a Danger signal word. It carries hazard statements H300 (fatal if swallowed), H314 (causes severe skin burns and eye damage), H350 (may cause cancer), and H410 (very toxic to aquatic life with long lasting effects). Strict adherence to safety protocols, including appropriate personal protective equipment (respirators, gloves, eye protection) and handling in well-ventilated areas, is essential.
Is Arsenic(III) oxide a controlled substance?
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Based on the provided data, Arsenic(III) oxide is classified as highly toxic (T+) and very dangerous for the environment (N) in Europe. Its UN number is UN 1561, hazard class 6.1, and packing group II, indicating strict regulations for transport and handling.
How is Arsenic(III) oxide packed and shipped?
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Arsenic(III) oxide is classified under UN 1561, 6.1, PG II, indicating it is shipped as a toxic substance requiring specialised packaging and handling according to international transport regulations.
How can I request a sample or quote?
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To request a sample or a quote for Arsenic(III) oxide, please contact our sales team through the website or by phone, providing your specific requirements.
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