Arsenic(V) oxide hydrate
Arsenic(V) oxide hydrate (CAS: 12044-50-7, Formula: As2O5 · xH2O) is a highly pure inorganic compound offered by Tech Serve Solutions. With a molecular weight of 229.84 g/mol on an anhydrous basis and an assay of ≥99.99%, it serves as a critical reagent in advanced chemical synthesis and materials science. Its robust properties make it suitable for specialised industrial applications and research, demanding careful handling due to its inherent toxicity.
- IUPAC
- Arsenic pentoxide hydrate

Chemical Synthesis
Used as an oxidising agent or a source of arsenic in the synthesis of various inorganic and organoarsenic compounds. It is valuable in research settings for developing novel chemical entities.
Materials Science
Employed in the development and fabrication of specialised materials, potentially including semiconductors or advanced ceramics, where precise control over elemental composition is required.
Catalysis Research
Investigated for its potential catalytic properties in specific organic transformations or inorganic reactions. Its role as a precursor in catalyst preparation is an area of interest.
Inorganic Chemistry
Serves as a fundamental reagent for studying arsenic chemistry and forming various arsenic-containing compounds. Its hydration state can influence reactivity in aqueous systems.
| Molecular weight | 229.84 (anhydrous basis) |
|---|---|
| Linear formula | As2O5 · xH2O |
| Assay | ≥99.99% |
| Density | 4.32 g/mL at 25 °C(lit.) |
| Composition | Degree of hydration, 2-5 |



Hazard statements
- H301Toxic if swallowed
- H331Toxic if inhaled
- H350May cause cancer
- H410Very toxic to aquatic life with long-lasting effects
Precautionary statements
- P201Obtain special instructions before use
- 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
| 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 1559 6.1 / PGII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | T,N |
| Risk statements (R) | 45-23/25-50/53 |
| 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(V) oxide hydrate used for?
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Arsenic(V) oxide hydrate is primarily used in chemical synthesis, materials science research, and inorganic chemistry applications. It can act as an oxidising agent or a source of arsenic in the creation of novel compounds and materials.
What is the CAS number and formula for Arsenic(V) oxide hydrate?
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The CAS number for Arsenic(V) oxide hydrate is 12044-50-7, and its chemical formula is As2O5 · xH2O.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Arsenic(V) oxide hydrate with an assay of ≥99.99%. This product is not represented as USP, BP, or EP grade.
How should Arsenic(V) oxide hydrate be handled safely?
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Arsenic(V) oxide hydrate is highly toxic and a suspected carcinogen (H301, H331, H350, H410). Handle with extreme caution using appropriate personal protective equipment, including eyeshields, full-face particle respirators, and chemical-resistant gloves. Ensure adequate ventilation and avoid environmental release.
Is Arsenic(V) oxide hydrate a controlled substance?
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As indicated by the safety data, Arsenic(V) oxide hydrate is classified with hazard codes T (Toxic) and N (Dangerous for the environment). It is subject to specific transport regulations (UN 1559, Class 6.1, Packing Group II).
How is Arsenic(V) oxide hydrate packed and shipped?
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Arsenic(V) oxide hydrate is packed and shipped according to strict safety and regulatory guidelines for hazardous materials, including UN 1559 requirements for toxic substances.
How can I request a sample or quote for Arsenic(V) oxide hydrate?
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To request a sample or obtain a quote for Arsenic(V) oxide hydrate, please contact our sales team through the website or by phone, providing your specific requirements.
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