Phenylarsine oxide
Phenylarsine oxide (CAS: 637-03-6), with the molecular formula C6H5AsO and a molecular weight of 168.02 g/mol, is an organoarsenic compound. This chemical serves as a reagent in various synthetic pathways and is recognised for its applications in chemical synthesis and biological research. Its properties make it a valuable compound for specific laboratory applications.
- IUPAC
- Arzene,Oxophenylarsine,PAO
- Synonyms
- ArzeneOxophenylarsinePAO

Chemical Synthesis Reagent
Phenylarsine oxide functions as a useful reagent in organic synthesis, participating in specific chemical transformations. Its reactivity profile allows for its incorporation into various synthetic strategies.
Research and Development
This compound finds utility in research settings, particularly in studies involving arsenic chemistry or as a tool in cell biology investigations. Its availability supports diverse experimental designs.
Catalysis Applications
As an arsenic-containing molecule, Phenylarsine oxide may be explored for catalytic applications within inorganic chemistry. Its structure lends itself to investigations in catalytic processes.
| Molecular weight | 168.02 |
|---|---|
| Empirical formula | C6H5AsO |
| Assay | ≥97% |
| Grade | purum |
| Solubility | DMSO: soluble50 mg/mL |


Hazard statements
- H301Toxic if swallowed
- H331Toxic if inhaled
- H410Very toxic to aquatic life with long-lasting effects
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 3465 6.1 / PGIII |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | T,N |
| Risk statements (R) | 23/25-50/53 |
| Safety statements (S) | 20/21-28-45-60-61 |
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 Phenylarsine oxide used for?
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Phenylarsine oxide is used as a reagent in chemical synthesis and for research purposes, including studies in cell biology and catalysis.
What is the CAS number and chemical formula for Phenylarsine oxide?
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The CAS number is 637-03-6, and the chemical formula is C6H5AsO.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Phenylarsine oxide with a purity of ≥97% (Purum grade). TSS does not represent this product as USP, BP, or EP grade.
How should Phenylarsine oxide be handled safely?
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Phenylarsine oxide is acutely toxic if swallowed or inhaled and is very toxic to aquatic life with long lasting effects. Handle with appropriate personal protective equipment in a well-ventilated area, and avoid release to the environment.
How is Phenylarsine oxide packed and shipped?
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Phenylarsine oxide is shipped under UN 3465, Hazard Class 6.1, Packing Group III, adhering to strict international regulations for hazardous materials transport. Contact TSS for specific packaging and export details.
How can I request a sample or quote for Phenylarsine oxide?
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To request a sample or a quote, please contact the Tech Serve Solutions sales team via our website or direct contact details, specifying the product CAS number 637-03-6.
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