Methylphosphonic acid
Methylphosphonic acid (CAS 993-13-5), with the chemical formula CH3P(O)(OH)2 and a molecular weight of 96.02 g/mol, is a phosphonic acid derivative. This compound serves as a valuable building block in chemical synthesis and is utilised in cell biology research. Its properties make it relevant for applications requiring organophosphorus compounds, particularly in organic synthesis and as a reagent in various chemical processes.
- IUPAC
- MPA

Chemical Synthesis Intermediate
Methylphosphonic acid functions as a key intermediate in the synthesis of various organophosphorus compounds. Its reactive functional groups allow for diverse chemical transformations, making it useful in the development of new chemical entities.
Research and Development
In research settings, this compound is employed as a building block for creating more complex molecules. Its applications span across organic chemistry and material science, contributing to the exploration of novel chemical structures and functionalities.
Biochemical Studies
Within cell biology, Methylphosphonic acid is used in studies investigating biological pathways and mechanisms. It can serve as a tool compound for exploring enzyme inhibition or cellular signalling processes related to phosphonates.
| Molecular weight | 96.02 |
|---|---|
| Linear formula | CH3P(O)(OH)2 |
| Assay | ≥98.0% (T) |
| Grade | purum |
| Melting point | 105-107 °C(lit.)105-107 °C |


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 / PGII |
| 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.
| Gene Information | human ... ALPP(250) |
|---|
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 Methylphosphonic acid used for?
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Methylphosphonic acid is primarily used as a building block in chemical synthesis and in cell biology research. It is a valuable intermediate for creating organophosphorus compounds.
What are the CAS number and chemical formula for Methylphosphonic acid?
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The CAS number for Methylphosphonic acid is 993-13-5, and its chemical formula is CH3P(O)(OH)2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Methylphosphonic acid with a purity of ≥98.0% (Titration), with a grade of purum. We do not represent this product as USP, BP, or EP grade.
How should Methylphosphonic acid be handled safely?
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Methylphosphonic acid is classified as Dangerous. It causes skin burns and eye damage (H314) and is harmful if swallowed (H302). Always wear appropriate personal protective equipment, including eyeshields, face shields, and gloves, and use in a well-ventilated area. Refer to the Safety Data Sheet (SDS) for detailed handling instructions.
How is Methylphosphonic acid packed and shipped?
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Methylphosphonic acid is packed and shipped according to UN 3261, Hazard Class 8, Packing Group II regulations for corrosive solid, acidic, organic, n.o.s. (Methylphosphonic acid). TSS is experienced in exporting fine chemicals globally.
How can I request a sample or quote for Methylphosphonic acid?
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To request a sample or a quotation for Methylphosphonic acid, please contact our sales team through the website or by phone. We will be happy to assist you with your inquiry.
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