Ethyl methylphosphonate
Ethyl methylphosphonate (CAS: 1832-53-7), with the chemical formula CH3P(O)(OH)OC2H5 and a molecular weight of 124.08 g/mol, is an organophosphorus compound. It serves as a valuable building block in organic synthesis and chemical research. Its specific properties make it suitable for applications requiring phosphonate functional groups in various chemical transformations.

Organic Synthesis Intermediate
Ethyl methylphosphonate acts as a versatile intermediate in the synthesis of more complex organic molecules. It is utilised in reactions where the introduction of a methylphosphonate moiety is required.
Chemical Research Reagent
This compound is employed in laboratory settings for research and development purposes. It aids in exploring novel chemical reactions and developing new synthetic methodologies involving phosphorus-containing compounds.
Building Block for Specialty Chemicals
As an organic building block, ethyl methylphosphonate can be incorporated into the design and synthesis of specialty chemicals with tailored properties for diverse industrial applications.
| Molecular weight | 124.08 |
|---|---|
| Linear formula | CH3P(O)(OH)OC2H5 |
| Assay | 98% |
| Density | 1.172 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.426(lit.) |

Hazard statements
- H301Toxic if swallowed
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P301IF SWALLOWED
- P305IF IN EYES
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 113 °C / 235.4 °F |
| Transport (UN / ADR) | UN 2810 6.1 / PGIII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | T |
| Risk statements (R) | 25-36/37/38 |
| Safety statements (S) | 26-36-45 |
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 Ethyl methylphosphonate primarily used for?
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Ethyl methylphosphonate is primarily used as a building block in organic synthesis and as a reagent in chemical research for creating more complex molecules containing a methylphosphonate group.
What are the CAS number and chemical formula for Ethyl methylphosphonate?
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The CAS number for Ethyl methylphosphonate is 1832-53-7, and its chemical formula is CH3P(O)(OH)OC2H5.
What grade and purity does Tech Serve Solutions supply for Ethyl methylphosphonate?
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Tech Serve Solutions supplies Ethyl methylphosphonate with an assay of 98%. We do not represent this product as USP, BP, EP, or other pharmacopoeial grades.
What are the key safety considerations when handling Ethyl methylphosphonate?
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Ethyl methylphosphonate is classified with Danger as a signal word and carries hazard statements H301 (Toxic if swallowed), H315 (Causes skin irritation), H319 (Causes serious eye irritation), and H335 (May cause respiratory irritation). Appropriate personal protective equipment, including eyeshields, gloves, and respiratory protection, is essential. It is transported under UN 2810, Class 6.1, Packing Group III.
Can Ethyl methylphosphonate be shipped internationally?
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Yes, Tech Serve Solutions is an experienced global supplier and exporter of chemicals, including Ethyl methylphosphonate, adhering to all relevant shipping regulations.
How can I request a quote or sample for Ethyl methylphosphonate?
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To request a quote or sample of Ethyl methylphosphonate, please contact our sales team through the website or via direct inquiry, providing your specific requirements.
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