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Atomfair Methylphosphonic acid CH5O3P CAS 993-13-5

Methylphosphonic Acid (CAS 993-13-5) is a high-purity organophosphorus compound with the molecular formula CH5O3P , widely utilized in chemical synthesis, coordination chemistry, and material science applications. This white crystalline solid exhibits excellent stability and solubility in water and polar organic solvents, making it a versatile intermediate for researchers and industrial chemists. As a phosphonic acid derivative, it serves as a key precursor for the preparation of phosphonate esters, metal-organic frameworks (MOFs), and flame retardants. Our product is rigorously tested for purity (typically ≥98%) and is available in various packaging options to suit laboratory and bulk-scale requirements. Ideal for advanced studies…

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Description

Methylphosphonic Acid (CAS 993-13-5) is a high-purity organophosphorus compound with the molecular formula CH5O3P, widely utilized in chemical synthesis, coordination chemistry, and material science applications. This white crystalline solid exhibits excellent stability and solubility in water and polar organic solvents, making it a versatile intermediate for researchers and industrial chemists. As a phosphonic acid derivative, it serves as a key precursor for the preparation of phosphonate esters, metal-organic frameworks (MOFs), and flame retardants. Our product is rigorously tested for purity (typically ≥98%) and is available in various packaging options to suit laboratory and bulk-scale requirements. Ideal for advanced studies in ligand design, catalysis, and surface modification due to its strong chelating properties and structural adaptability.

Properties

  • CAS Number: 993-13-5
  • Complexity: 61.3
  • IUPAC Name: methylphosphonic acid
  • InChI: InChI=1S/CH5O3P/c1-5(2,3)4/h1H3,(H2,2,3,4)
  • InChI Key: YACKEPLHDIMKIO-UHFFFAOYSA-N
  • Exact Mass: 95.99763101
  • Molecular Formula: CH5O3P
  • Molecular Weight: 96.022
  • SMILES: CP(=O)(O)O
  • Topological: 57.5
  • Monoisotopic Mass: 95.99763101
  • Physical Description: Liquid
  • Color/Form: White solid
  • Boiling Point: Decomposes
  • Melting Point: 108.5 °C
  • Solubility: Soluble in ethanol and ethyl ether; insoluble in benzene
  • Vapor Pressure: 0.000002 [mmHg]
  • Dissociation Constants: pKa1= 2.12; pKa2= 7.29
  • Synonyms: Methylphosphonic acid, 993-13-5, Methanephosphonic acid, Phosphonic acid, methyl-, METHYL PHOSPHONIC ACID, Phosphonic acid, P-methyl-, PHOSPHONOMETHYL GROUP, CHEBI:45129, HSDB 6762, 329W4YM10Z, EINECS 213-607-2, NSC 119358, NSC-119358, AI3-51156, DTXSID5047748, DIHYDROGEN METHYLPHOSPHONATE, EC 213-607-2, METHYL PHOSPHONIC ACID [HSDB], aluminum methylphosphonate, Phosphonic acid, methyl, DTXCID9027732, 213-607-2, p-methylphosphonic acid, MFCD00002137, CHEMBL122938, UNII-329W4YM10Z, methyl phosphonate, Methylphosphonicacid, VXA, Methyl-phosphonic acid, Methylphosphonic acid, 98%, SCHEMBL21791, SCHEMBL65178, SCHEMBL1952362, SCHEMBL6512632, BDBM50131862, NSC119358, AKOS017343694, MSK160238-100W, DB-009772, NS00021416, Methylphosphonic acid, 99.0-101.0% (T), C20396, D95909, L000171, Methylphosphonic acid Solution in Water, 100ug/mL, Q15634110, 57H

Application

Methylphosphonic acid is extensively used as a building block for synthesizing phosphonate-based ligands in coordination chemistry and catalysis. It finds applications in the development of flame-retardant additives for polymers and textiles due to its thermal stability. Researchers also employ it in the preparation of functionalized surfaces and metal-organic frameworks (MOFs) for gas storage and separation technologies.

Safety and Hazards

GHS Hazard Statements

  • H302 (91.9%): Harmful if swallowed [Warning Acute toxicity, oral]
  • H314 (100%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]
  • H318 (47.7%): Causes serious eye damage [Danger Serious eye damage/eye irritation]

Precautionary Statements

  • P260, P264, P264+P265, P270, P280, P301+P317, P301+P330+P331, P302+P361+P354, P304+P340, P305+P354+P338, P316, P317, P321, P330, P363, P405, and P501

Hazard Classes and Categories

  • Acute Tox. 4 (91.9%)
  • Skin Corr. 1B (100%)
  • Eye Dam. 1 (47.7%)

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Disclaimer: Sold exclusively for laboratory research. Prohibited for commercial use, diagnostics, or human/animal applications. Buyers assume all compliance liability.

Disclaimer

Intended Use & Restrictions

This product is sold exclusively for laboratory research, analytical testing, or non-commercial purposes.

  • Strictly prohibited: Resale, repackaging, or formulation into commercial products.
  • Not approved for human/animal use, diagnostics, or manufacturing (including pharmaceuticals, agrochemicals, or consumer goods).

Patent & Regulatory Compliance

Certain molecules may be protected by active patents or regulatory restrictions.

  • Buyers must independently verify patent status (e.g., via USPTO/EPO/CNIPA) and comply with local laws.
  • Atomfair LLC does not provide legal assurances regarding patent non-infringement or jurisdictional compliance.

Liability Release

By purchasing, the buyer agrees to:

  • Use this product only as permitted by law.
  • Indemnify Atomfair LLC against all claims arising from misuse, patent infringement, or regulatory violations.

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