Octadecylphosphonic acid
Synonym(s):n-Octadecylphosphonic acid;ODPA
- CAS NO.：4724-47-4
- Empirical Formula: C18H39O3P
- Molecular Weight: 334.47
- MDL number: MFCD00015838
- EINECS: 225-216-4
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-04-24 14:58:55
What is Octadecylphosphonic acid?
Chemical properties
crystalline solid
The Uses of Octadecylphosphonic acid
n-Octadecylphosphonic acid is used in thermal paper for receipts, adding machines and tickets. It acts as surfactant, emulsifier, dispersants and chelating agents. Further, it is a long chain phosphonic acid compound utilized for proteomics research. In addition to this, it is used to prepare modified mesoporous magnetic nano particles through Lewis acid/base interaction.
What are the applications of Application
n-Octadecylphosphonic acid is a long chain phosphonic acid compound for proteomics research
General Description
Octadecylphosphonic acid (OPA) is used as a self-assembled monolayer that forms a surfactant which strongly bonds with the surface atoms of different metal oxides. It provides hydrophobic properties and covers a higher surface area than the predominantly used silanes.
Properties of Octadecylphosphonic acid
| Melting point: | 99℃ |
| Boiling point: | 463.6±28.0 °C(Predicted) |
| Density | 0.969 |
| form | Crystalline |
| pka | 2?+-.0.10(Predicted) |
| color | White to off-white |
| Water Solubility | Insoluble in water. |
| Hydrolytic Sensitivity | 4: no reaction with water under neutral conditions |
| Stability: | Stable. Incompatible with strong oxidizing agents. |
| CAS DataBase Reference | 4724-47-4 |
| EPA Substance Registry System | Phosphonic acid, octadecyl- (4724-47-4) |
Safety information for Octadecylphosphonic acid
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation |
| Precautionary Statement Codes |
P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P280:Wear protective gloves/protective clothing/eye protection/face protection. P302+P352:IF ON SKIN: wash with plenty of soap and water. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P332+P313:IF SKIN irritation occurs: Get medical advice/attention. P337+P313:IF eye irritation persists: Get medical advice/attention. |
Computed Descriptors for Octadecylphosphonic acid
| InChIKey | FTMKAMVLFVRZQX-UHFFFAOYSA-N |
Octadecylphosphonic acid manufacturer
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