Triphenylarsine
Triphenylarsine (CAS 603-32-7) is an organoarsenic compound with the formula (C6H5)3As and a molecular weight of 306.23 g/mol. This white crystalline solid is primarily utilised in chemical synthesis and materials science. It serves as a ligand in coordination chemistry and as a precursor in the development of advanced materials, particularly in microelectronics and vapor deposition processes, owing to its arsenic content.
- IUPAC
- Arsinetriphenyl
- Synonyms
- ArsinetriphenylTriphenyl-arsineDiphenyl(phenyl)arsine

Chemical Synthesis and Catalysis
Triphenylarsine acts as a ligand in organometallic chemistry and catalysis. Its ability to coordinate with transition metals makes it valuable in homogeneous catalysis and the synthesis of complex inorganic compounds.
Materials Science Precursor
Utilised as a precursor in materials science, particularly for Chemical Vapor Deposition (CVD) and Atomic Layer Deposition (ALD) processes. It enables the deposition of arsenic-containing thin films for microelectronic applications.
Research and Development
A key reagent in academic and industrial research laboratories for exploring novel chemical reactions, developing new materials, and studying arsenic chemistry.
| Molecular weight | 306.23 |
|---|---|
| Linear formula | (C6H5)3As |
| Assay | 99.99% trace metals basis |
| Form | solid |
| Melting point | 58-61 °C(lit.) |


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 / PGII |
|---|---|
| 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 Triphenylarsine (CAS 603-32-7) used for?
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Triphenylarsine is primarily used in chemical synthesis as a ligand in organometallic chemistry and catalysis, and as a precursor in materials science for applications like CVD and ALD, particularly in microelectronics.
What are the CAS number and formula for Triphenylarsine?
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The CAS number for Triphenylarsine is 603-32-7 and its linear formula is (C6H5)3As.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Triphenylarsine with an assay of 99.99% on a trace metals basis. We do not represent this product as USP, BP, or EP grade.
How should Triphenylarsine be handled safely?
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Triphenylarsine is acutely toxic if swallowed or inhaled and is very toxic to aquatic life with long lasting effects. Handle with extreme caution in a well-ventilated area, using appropriate personal protective equipment (gloves, eye protection, respiratory protection). Ensure proper disposal procedures are followed.
Is Triphenylarsine a controlled substance?
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The provided data does not indicate that Triphenylarsine is a controlled substance. However, users should always comply with local regulations regarding the handling and possession of arsenic compounds.
How is Triphenylarsine packed, shipped, and exported?
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Triphenylarsine is shipped as UN 3465, Hazard Class 6.1, Packing Group II, under strict safety protocols. Tech Serve Solutions expertly handles global export logistics for this material.
How can I request a quote or sample of Triphenylarsine?
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To request a quote or sample of Triphenylarsine, please contact our sales department via the website or direct telephone line, providing your specific requirements.
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