INTRODUCTION
Octadecylphosphonic acid (ODPA), a versatile chemical compound, serves as a surfactant and dispersant in applications spanning coatings, lubricants, and corrosion inhibition. With its hydrophobic octadecyl chain linked to a phosphonic acid group, it excels in surface modification, boosting adhesion in metal surfaces.
MANUFACTURE
It is synthesized by heating 1-bromooctadecane with triethyl phosphite. The reaction proceeds through a nucleophilic substitution mechanism.
Synonym | n-Octadecylphosphonic acid, Phosphonic acid, octadecyl- |
CAS no. | 4724-47-4 |
EINECS no. | 225-216-4 |
Molecular formula | C18H39O3P |
Molecular weight | 334.47 |
Structure | ![]() |
APPLICATIONS |
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It serves as a vital surface modifier and coupling agent, enhancing adhesion between substrates and coatings or adhesives |
It effectively inhibits corrosion in metals, notably aluminum and its alloys, by forming a protective barrier that wards off corrosive agents, thereby minimizing corrosion rates |
It is essential for antistatic coatings and films in plastics, textiles, and paper, aiding in static charge dissipation and improving substrate conductivity |
It enhances lubrication by serving as an additive in oils and greases, boosting boundary lubrication and diminishing friction and wear in mechanical systems like engines and gearboxes |
It enhances adhesion in paints, coatings, and adhesives, ensuring strong bonds and enhanced durability. |
ODPA-coated surfaces or nanoparticles show promise in biomedical applications like drug delivery, tissue engineering, and bioimaging due to their biocompatibility and customizable surface traits. |
SPECIFICATIONS
Test | Unit | Specifications |
---|---|---|
Appearance | – | White to off-white powder |
Identification by 1H NMR | – | Should confirm with the structure |
Purity by GC | % | NLT 99.0 |
Melting point | °C | Min 95.0 (final melt) |
STORAGE
Store at ambient temperature; Keep the container tightly closed
PACKING
HDPE drums
REACH Status
Not registered
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