4-Hydroxybenzylphosphonic acid
4-Hydroxybenzylphosphonic acid (CAS: 90001-07-3; C7H9O4P) is a chemical compound with a molecular weight of 188.12 g/mol. It functions as a versatile building block in organic synthesis and is particularly useful in the chemical industry for creating more complex molecules. Its phenolic and phosphonic acid functionalities make it a valuable intermediate in various chemical transformations.

Organic Synthesis Intermediate
This compound serves as a key intermediate in the synthesis of various organic molecules. Its dual functionality allows for diverse chemical reactions, making it valuable in the development of new chemical entities.
Research and Development
4-Hydroxybenzylphosphonic acid is utilised in laboratory settings for research purposes, contributing to advancements in chemical synthesis and materials science.
Building Block for Specialty Chemicals
The compound's structure makes it suitable for constructing more complex molecules used in specialty chemical applications. It can be incorporated into various chemical processes requiring phenolic and phosphonic acid groups.
| Molecular weight | 188.12 |
|---|---|
| Empirical formula | C7H9O4P |
| Assay | 97% |
| Melting point | 224-229 °C |

Hazard statements
- 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
| Transport (UN / ADR) | UN 3261 8 / PGIII |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | C |
| Risk statements (R) | 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 4-Hydroxybenzylphosphonic acid used for?
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4-Hydroxybenzylphosphonic acid is primarily used as a building block and intermediate in organic synthesis and chemical research and development.
What are the CAS number and chemical formula for 4-Hydroxybenzylphosphonic acid?
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The CAS number is 90001-07-3 and the chemical formula is C7H9O4P.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 4-Hydroxybenzylphosphonic acid with an assay of 97%. We do not represent this product as USP, BP, or EP grade.
How should 4-Hydroxybenzylphosphonic acid be handled safely?
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This compound is classified as Danger, causing severe skin burns and eye damage (H314). Handle with appropriate personal protective equipment, including gloves, eye protection, and protective clothing. Ensure good ventilation. Refer to the Safety Data Sheet (SDS) for comprehensive handling instructions.
Is 4-Hydroxybenzylphosphonic acid available for export?
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Yes, Tech Serve Solutions, as a specialist global supplier and exporter, can fulfil export orders for 4-Hydroxybenzylphosphonic acid.
How can I request a quote or sample?
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To request a quote or sample of 4-Hydroxybenzylphosphonic acid, please contact our sales department through the website or by calling us directly.
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