Phenylphosphonic acid
Phenylphosphonic acid (CAS: 1571-33-1), with the molecular formula C6H5P(O)(OH)2 and a molecular weight of 158.09 g/mol, is a dicarboxylic acid derivative. It is recognised for its utility in various chemical synthesis pathways. Tech Serve Solutions supplies this compound, meeting a minimum assay of 98%, suitable for research and industrial applications where precise chemical properties are essential.

Electronic Chemicals
Phenylphosphonic acid is utilised in the development and manufacturing of electronic components and materials. Its properties lend themselves to applications within the microelectronics and nanoelectronics sectors.
Materials Science
This compound serves as a building block or additive in materials science research. It can be incorporated into polymers or used in the synthesis of novel materials with specific functional properties.
Chemical Synthesis
As a phosphonic acid derivative, it acts as a valuable intermediate in organic synthesis. It can be employed in the preparation of more complex organophosphorus compounds.
| Molecular weight | 158.09 |
|---|---|
| Linear formula | C6H5P(O)(OH)2 |
| Assay | 98% |
| Melting point | 162-164 °C(lit.) |


Hazard statements
- H302Harmful if swallowed
- H314Causes severe skin burns and eye damage
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
- P310Immediately call a POISON CENTER or doctor
| 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 3261 8 / PGIII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | C |
| Risk statements (R) | 22-34 |
| Safety statements (S) | 26-36/37/39-45 |
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 Phenylphosphonic acid primarily used for?
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Phenylphosphonic acid is primarily used in the fields of electronic chemicals, materials science, and as an intermediate in general chemical synthesis.
What are the CAS number and formula for Phenylphosphonic acid?
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The CAS number for Phenylphosphonic acid is 1571-33-1, and its linear formula is C6H5P(O)(OH)2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Phenylphosphonic acid with an assay of 98%. We do not represent this product as USP, BP, EP, or other pharmacopoeia grades.
How should Phenylphosphonic acid be handled safely?
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Phenylphosphonic acid is classified as corrosive and harmful if swallowed. Handle with appropriate personal protective equipment, including eyeshields, face shields, gloves, and respiratory protection, in a well-ventilated area. Refer to the Safety Data Sheet for detailed instructions.
How is Phenylphosphonic acid packed, shipped, and exported?
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Phenylphosphonic acid is packed and shipped in compliance with relevant regulations for hazardous materials, including UN 3261 classification. TSS handles global export procedures.
How can I request a quote or sample of Phenylphosphonic acid?
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To request a quote or sample, please contact our sales department via the website or direct email, providing your contact details and the quantity required.
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