Octadecylphosphonic acid
Uses- Product Name
- Octadecylphosphonic acid
- CAS No.
- 4724-47-4
- Chemical Name
- Octadecylphosphonic acid
- Synonyms
- stearylphosphonic acid;octadecylphosphonic acid;Octadecanephosphonic acid;1-Octadecylphosphonic acid;N-OCTADECYLPHOSPHONIC ACID;OctadecylphosphonicAcid>1-Octadecanephosphonic acid;Octadecylphosphonic acid 97%;Phosphonic acid, P-octadecyl-;n-Octadecylphosphonic acid 97%
- CBNumber
- CB1451818
- Molecular Formula
- C18H39O3P
- Formula Weight
- 334.47
- MOL File
- 4724-47-4.mol
Octadecylphosphonic acid Property
- Melting point:
- 99℃
- Boiling point:
- 463.6±28.0 °C(Predicted)
- Density
- 0.969
- storage temp.
- Store at room temperature
- 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.
- InChI
- InChI=1S/C18H39O3P/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-22(19,20)21/h2-18H2,1H3,(H2,19,20,21)
- InChIKey
- FTMKAMVLFVRZQX-UHFFFAOYSA-N
- SMILES
- P(CCCCCCCCCCCCCCCCCC)(=O)(O)O
- CAS DataBase Reference
- 4724-47-4
- EPA Substance Registry System
- Phosphonic acid, octadecyl- (4724-47-4)
Safety
- WGK Germany
- 3
- TSCA
- Yes
- HS Code
- 29319090
Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Warning
- Hazard statements
-
H315Causes skin irritation
H319Causes serious eye irritation
- Precautionary statements
-
P264Wash hands thoroughly after handling.
P264Wash skin thouroughly after handling.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P302+P352IF ON SKIN: wash with plenty of soap and water.
P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P332+P313IF SKIN irritation occurs: Get medical advice/attention.
P337+P313IF eye irritation persists: Get medical advice/attention.
N-Bromosuccinimide Price
- Product number
- 715166
- Product name
- Octadecylphosphonic acid
- Purity
- 97%
- Packaging
- 1g
- Price
- $189.05
- Updated
- 2025/07/31
- Product number
- O0371
- Product name
- Octadecylphosphonic Acid
- Purity
- >98.0%(T)
- Packaging
- 1g
- Price
- $94
- Updated
- 2025/07/31
- Product number
- O0371
- Product name
- Octadecylphosphonic Acid
- Purity
- >98.0%(T)
- Packaging
- 5g
- Price
- $327
- Updated
- 2025/07/31
- Product number
- 15-3510
- Product name
- n-Octadecylphosphonic acid, min. 97% ODPA
- Packaging
- 1g
- Price
- $71
- Updated
- 2024/03/01
- Product number
- 15-3510
- Product name
- n-Octadecylphosphonic acid, min. 97% ODPA
- Packaging
- 5g
- Price
- $297
- Updated
- 2024/03/01
Octadecylphosphonic acid Chemical Properties,Usage,Production
Uses
Octadecylphosphonic acid is used as detergents, dispersants, emulsifiers, and chelating agents. Alkyl phosphonic acids are typically sparingly soluble in both organic solvents and water, but become more soluble in water when neutralized to phosphonates at neutral to high pH.
Chemical Properties
crystalline solid
Uses
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.
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.
Synthesis
16165-72-3
4724-47-4
Under argon protection, octadecyl diethyl phosphite (1.2 g) was added to a Schlenk flask with 10 mL of dichloromethane. TMSBr (2.0 g, 4 mmol) was added slowly via syringe and the reaction mixture was stirred overnight at room temperature. The following day, dichloromethane and unreacted TMSBr were removed by distillation under reduced pressure. 15 mL of methanol was added to the residue and stirring was continued for 3 hr. Subsequently, methanol was evaporated under reduced pressure to give an off-white crystalline solid. The crude product was dissolved in boiling hexane with vigorous stirring and left to partition, cooled to room temperature and filtered. This purification process was repeated three times for complete removal of oily impurities, resulting in a white solid product. The product was characterized as follows: 1H NMR (CDCl3, ppm, J Hz): δ 8.73 (br, 2H, OH), 1.90 (m, 2H, PCH2, J = 26.75), 1.616 (br, 2H, CH2), 1.39 (br, 2H, CH2), 1.19 (s, 30H, CH2-alkyl), 0.877 (t, 3H, CH3, J = 13.0). Mass spectrum: [M+] = 334.26. Elemental analysis: C18H39O3P, calculated values: C, 64.64; H, 11.75; measured values: C, 64.62; H, 11.72.
References
[1] Bulletin of the Chemical Society of Ethiopia, 2014, vol. 28, # 1, p. 143 - 148
[2] Phosphorus, Sulfur and Silicon and Related Elements, 2002, vol. 177, # 4, p. 877 - 891
[3] Chemistry of Materials, 2018, vol. 30, # 21, p. 8034 - 8039
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View Lastest Price from Octadecylphosphonic acid manufacturers
- Product
- Octadecylphosphonic acid 4727-47-4
- Price
- US $79.00-38.00/kg
- Min. Order
- 1kg
- Purity
- 99%
- Supply Ability
- 20ton
- Release date
- 2024-12-16
- Product
- Octadecylphosphonic acid 4724-47-4
- Price
- US $0.00-0.00/KG
- Min. Order
- 1KG
- Purity
- 99%
- Supply Ability
- 500000kg
- Release date
- 2024-10-30
- Product
- Octadecylphosphonic acid 4724-47-4
- Price
- US $40.00/kg
- Min. Order
- 1kg
- Purity
- 0.99
- Supply Ability
- 10 tons
- Release date
- 2023-10-09