Tetraphenylarsonium(V) chloride hydrate
Tetraphenylarsonium(V) chloride hydrate (CAS 507-28-8) is a white crystalline solid with a molecular weight of 418.79 (anhydrous basis). This arsenic compound serves as a versatile cation exchange reagent and is utilized in the synthesis of various organic derivatives, including arsonium amides, oximes, and carbohydrate compounds. It is a key reagent in catalysis and inorganic chemistry, facilitating complex chemical transformations.
- IUPAC
- Phenylarsonium chloride,Tetraphenylarsenic chloride
- Synonyms
- Tetraphenylarsonium chloridePhenylarsonium chloride,Tetraphenylarsenic chloride

Cation Exchange Reagent
Tetraphenylarsonium(V) chloride hydrate functions as an effective cation exchange reagent. This property allows for the selective separation and purification of various chemical species based on their ionic charge.
Synthesis of Arsonium Derivatives
The compound is employed in the preparation of arsonium amide, oxime, and carbohydrate derivatives. These syntheses leverage the reactivity of the tetraphenylarsonium cation in organic transformations.
Catalysis and Inorganic Chemistry
This arsenic compound finds application within the fields of catalysis and inorganic chemistry. It can participate in or facilitate various inorganic reactions and catalytic processes.
Chemical Synthesis
As a reagent in chemical synthesis, it contributes to the construction of complex molecules. Its specific properties make it valuable for particular synthetic pathways.
| Molecular weight | 418.79 (anhydrous basis) |
|---|---|
| Linear formula | (C6H5)4As(Cl) · xH2O |
| Assay | 97% |
| Application | Cation exchange reagent.1,2 Used to prepare arsonium amide, oxime, and carbohydrate derivatives.3 |
| Melting point | 258-260 °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 / 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 Tetraphenylarsonium(V) chloride hydrate used for?
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Tetraphenylarsonium(V) chloride hydrate is used as a cation exchange reagent and in the preparation of arsonium amide, oxime, and carbohydrate derivatives. It is also applied in catalysis and inorganic chemistry, and general chemical synthesis.
What is the CAS number and formula for Tetraphenylarsonium(V) chloride hydrate?
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The CAS number is 507-28-8. The linear formula is (C<sub>6</sub>H<sub>5</sub>)<sub>4</sub>As(Cl) · xH<sub>2</sub>O.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Tetraphenylarsonium(V) chloride hydrate with an assay of 97%. This product is supplied for research and laboratory use and is not represented as USP, BP, EP, or pharmacopoeia grade.
How should Tetraphenylarsonium(V) chloride hydrate be handled?
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Tetraphenylarsonium(V) chloride hydrate is toxic if swallowed and toxic if inhaled (H301, H331). It is also very toxic to aquatic life with long-lasting effects (H410). Handle with appropriate personal protective equipment in a well-ventilated area and avoid release to the environment. Consult the Safety Data Sheet for detailed handling information.
Is Tetraphenylarsonium(V) chloride hydrate a controlled substance?
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The provided data does not indicate that Tetraphenylarsonium(V) chloride hydrate is a controlled substance.
How is this chemical shipped and exported?
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Tetraphenylarsonium(V) chloride hydrate is classified under UN 3465, Class 6.1, Packing Group III. Tech Serve Solutions exports chemicals globally in compliance with all relevant international shipping regulations.
How can I request a quote or sample?
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To request a quote or sample of Tetraphenylarsonium(V) chloride hydrate, please visit the Tech Serve Solutions website or contact our sales team directly.
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