n-Octylphosphonic Acid(OPA) - ≥98%(T) , CAS No.4724-48-5

CAS: 4724-48-5 Cat. No.: N159772 Molecular Weight: 194.21 EC Number: 225-218-5
AVAILABLE TO ORDER
GRADE & PURITY ≥98%(T)
Synonyms
N-t-Butyloxycarbonyl-L-phenylalanine | EC 225-218-5 | EN300-1697170 | Toluene, 3,5-dimethoxy- | 1-Octanephosphonic acid | EINECS 225-218-5 | NCGC00256096-01 | DTXSID3044679 | F8889-2764 | MFCD00015841 | Octylphosphonic acid, 97% | 1H-Benzotriazole, 5,6-di
Storage
Room temperature,Desiccated,Cool
Shipped In
Normal
Size
Status
Price
Qty
5g
N159772-5g
1
$9.90
10g
N159772-10g
1
$14.90
25g
N159772-25g
2
$19.90
100g
N159772-100g
4
$49.90
500g
N159772-500g
2
$185.90
Enter a quantity for the sizes you want to add.
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Why this grade

≥98%(T) for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

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Storage & shipping

Room temperature,Desiccated,Cool Ships Normal Check lot-specific COA for exact specifications.

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Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

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Literature proof

Cited in 9 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Overview

Octylphosphonic acid (OPA) forms a self-assembled monolayer (SAM), which serves as a protective anti-corrosive phosphonate layer on a variety of surfaces.
Application
OPA can be used as a surfactant that may be added to silver (Ag)/titanium oxide (TiO2) for uniform dispersion into the polymeric matrix. It may be coated on indium-tin oxide (ITO) substrates, which can be used for super-resolution microscopy. OPA based charge blocking layer may be used to prevent leakage of current in a hybrid dielectric film.

Specifications

Synonyms
N-t-Butyloxycarbonyl-L-phenylalanine | EC 225-218-5 | EN300-1697170 | Toluene, 3, 5-dimethoxy- | 1-Octanephosphonic acid | EINECS 225-218-5 | NCGC00256096-01 | DTXSID3044679 | F8889-2764 | MFCD00015841 | Octylphosphonic acid, 97% | 1H-Benzotriazole, 5, 6-di
Specifications & Purity
≥98%(T)
Storage
Room temperature, Desiccated, Cool
Shipped In
Normal
Purity
≥98%(T)
Names and Identifiers
Pubchem Sid488185579
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/488185579
Canonical SmilesCCCCCCCCP(=O)(O)O
IUPAC Nameoctylphosphonic acid
InChIKeyNJGCRMAPOWGWMW-UHFFFAOYSA-N
INCHI1S/C8H19O3P/c1-2-3-4-5-6-7-8-12(9,10)11/h2-8H2,1H3,(H2,9,10,11)
Isomeric SMILES CCCCCCCCP(=O)(O)O
WGK Germany 2
Molecular Weight 194.21
Reaxy-Rn 1764242
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=1764242&ln=

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

Download SDS →

✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

Look up COA →

📊 Datasheet

Quick-reference summary of product specifications and applications.

View datasheet →

🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomOrganic compounds
SuperclassOrganic acids and derivatives
ClassOrganic phosphonic acids and derivatives
SubclassOrganic phosphonic acids
Intermediate Tree Nodes Not available
Direct ParentOrganic phosphonic acids
Alternative Parents Organopnictogen compounds  Organophosphorus compounds  Organic oxides  Hydrocarbon derivatives  
Molecular FrameworkAliphatic acyclic compounds
Substituents Organophosphonic acid - Organic oxygen compound - Organopnictogen compound - Organic oxide - Hydrocarbon derivative - Organophosphorus compound - Aliphatic acyclic compound
DescriptionThis compound belongs to the class of organic compounds known as organic phosphonic acids. These are organic compounds containing phosphonic acid.
External Descriptors Not available
3D Structure
Interactive Chemical Structure Model





Certificates(CoA,COO,BSE/TSE and Analysis Chart)
C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:

Find and download the COA for your product by matching the lot number on the packaging.

21 results found

Lot NumberCertificate TypeDateItem
H2619367Certificate of AnalysisAug 06, 2026 N159772
H2619366Certificate of AnalysisAug 06, 2026 N159772
H2619365Certificate of AnalysisAug 06, 2026 N159772
H2619364Certificate of AnalysisAug 06, 2026 N159772
L2117157Certificate of AnalysisOct 11, 2025 N159772
G2528342Certificate of AnalysisJul 14, 2025 N159772
G2528345Certificate of AnalysisJul 14, 2025 N159772
G2528344Certificate of AnalysisJul 14, 2025 N159772
G2528343Certificate of AnalysisJul 14, 2025 N159772
F2626051Certificate of AnalysisJul 14, 2025 N159772
C2624029Certificate of AnalysisJul 14, 2025 N159772
D1812106Certificate of AnalysisDec 12, 2024 N159772
L1917076Certificate of AnalysisOct 20, 2023 N159772
B2318420Certificate of AnalysisFeb 28, 2023 N159772
G2509064Certificate of AnalysisNov 19, 2021 N159772
F2415076Certificate of AnalysisNov 19, 2021 N159772
B2525028Certificate of AnalysisNov 19, 2021 N159772
B2519028Certificate of AnalysisNov 19, 2021 N159772
B2519027Certificate of AnalysisNov 19, 2021 N159772
K2216306Certificate of AnalysisNov 19, 2021 N159772
B2519025Certificate of AnalysisNov 19, 2021 N159772

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Chemical and Physical Properties
SolubilitySlightly soluble in organic solvents and water.
Melt Point(°C)102-103°C
Molecular Weight194.210 g/mol
XLogP31.800
Hydrogen Bond Donor Count2
Hydrogen Bond Acceptor Count3
Rotatable Bond Count7
Exact Mass194.107 Da
Monoisotopic Mass194.107 Da
Topological Polar Surface Area57.500 Ų
Heavy Atom Count12
Formal Charge0
Complexity141.000
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
The total count of all stereochemical bonds0
Covalently-Bonded Unit Count1
Documents & Articles
Citations of This Product
References
1. Qiangqiang Wang, Xuanyu Zhang, Lei Qian, Chaoyu Xiang.  (2023)  Improving Perovskite Green Quantum Dot Light-Emitting Diode Performance by Hole Interface Buffer Layers.  ACS Applied Materials & Interfaces,      [PMID:37272407] [10.1021/acsami.3c04592]
2. Fengchang Huang, Xiaoming Mo, Xuesong Li, Maolan Peng, Yulu Zhou, Xiaoma Tao, Yifang Ouyang, Jialong Zhao.  (2022)  Improved efficiency for lead-free CsCu2I3 halide microplatelets by suppressing surface pinholes via surface functionalization.  JOURNAL OF LUMINESCENCE,      [PMID:] [10.1016/j.jlumin.2022.119390]
3. Weinan Xue, Xin Zhang, Wei Zhu, Xue Zhang, Wei Wang, Linwei Peng, Xiang Ma, Yan Li.  (2022)  Large-scale heterogeneous synthesis of monodisperse high performance colloidal CsPbBr3 nanocrystals.  Fundamental Research,      [PMID:] [10.1016/j.fmre.2022.05.030]
4. Wenmei Tan, Wei Shi, Sheng Ding, Zhengfeng Xie.  (2021)  Apigenin/furfurylamine-based bio-polyamide derivative: Benzoxazine-isocyanide mechanochemistry preparation and application in Pb(II) electrochemical probing.  REACTIVE & FUNCTIONAL POLYMERS,      [PMID:] [10.1016/j.reactfunctpolym.2021.104996]
5. Xu Cao, Jiongzhao Li, Xudong Qian, Chuyue Li, Xiaogang Peng.  (2025)  Nucleation and Growth of Monodisperse and Monocrystalline Wurtzite CdSe Nanocrystals: Zinc Alkanoates as Neutral Ligands.  Journal of the American Chemical Society,      [PMID:39829123] [10.1021/jacs.4c15987]
6. Juan Zhang, Yu Wei, Zhiquan Wu, Hang Gao, Wenchao Gao, Libo Li, Yang Chen, Honghong Chang.  (2025)  Efficient conversion of ethylene glycol to indole by hydrophobic modified Pt/Al2O3 catalyst.  COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,      [PMID:] [10.1016/j.colsurfa.2025.139183]
7. Wenbin Shi, Ping Yang, Xiao Zhang.  (2026)  Sr derived synthesis of CsPbX3 nanocrystals for extraordinary stable luminescence.  APPLIED SURFACE SCIENCE,      [PMID:] [10.1016/j.apsusc.2026.166325]
8. Xiuting Wu, Tianjun Hu, Qingsong Shan, Hong Zhong, Yuqin Su, Linxiang Yang, Beichen Yuan, Junhui Dai, Yuhao Zhang, Qiangyu Dai, Xiaoming Li, Haibo Zeng.  (2026)  Ligand-Mediated Intergrain Isolation Strategy for Narrow-Emission Deep-Blue Perovskite Quantum Dot Light-Emitting Diodes.  ACS Photonics,      [PMID:] [10.1021/acsphotonics.6c00072]
9. Wenbo Sui, Yijing Chen, Yingnan Wang, Han Feng, Chunhong Zhang, Lei Su, Lei Shang.  (2026)  Phosphorus-containing imidazole-based ionic liquid curing agents with different functional groups: synergistically enhancing flame-retardant and mechanical properties while extending processing time.  PROGRESS IN ORGANIC COATINGS,      [PMID:] [10.1016/j.porgcoat.2026.110110]
Solution Calculators
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