Description

1,8-Diphosphonooctane, also known as 1,8-Octanediylbis-Phosphonic Acid or C8Bpa, is a high-purity, bifunctional phosphonic acid derivative with an eight-carbon alkyl chain. This compound is valued for its excellent chelating and surface modification properties, making it a critical intermediate for advanced material science and industrial chemistry. It is primarily sought by manufacturers in the coatings, water treatment, electronics, and pharmaceutical sectors for creating functionalized surfaces, scale inhibitors, and metal-organic frameworks.

Application

• Metal Surface Treatment & Corrosion Inhibition: Acts as a highly effective chelating agent and corrosion inhibitor in industrial cooling water systems and metal pretreatment formulations.
• Functional Coatings & Adhesives: Used as a coupling agent or crosslinker to enhance adhesion between organic polymers and inorganic surfaces like metals, glass, or ceramics.
• Scale & Deposit Control: Serves as a key component in water treatment chemicals to prevent the formation of calcium carbonate, sulfate, and phosphate scales.
• Electronics & Semiconductor Processing: Employed in the formulation of cleaning agents and etchants for silicon wafers and other electronic components due to its metal-chelating ability.
• Pharmaceutical & Biomedical Research: Utilized as a building block for synthesizing bisphosphonate drugs or for surface functionalization of biomedical implants to improve biocompatibility.
• Nanomaterial Synthesis: Functions as a stabilizing ligand or functional linker in the synthesis of nanoparticles and metal-organic frameworks (MOFs).
• Textile & Leather Processing: Applied as a softening agent, flame retardant intermediate, or to impart specific functional properties to fibers.

Basic Information

Product Name	1,8-Diphosphonooctane
CAS No.	5943-66-8
Molecular Formula	C8H20O6P2
Molecular Weight	274.19 g/mol
Synonyms	1,8-Octanediylbis-Phosphonic Acid; C8Bpa; Octane-1,8-diylbis(phosphonic acid); 1,8-Octanediphosphonic Acid; Octamethylenediphosphonic Acid; ODPA; 1,8-Bis(phosphono)octane; Octane-1,8-diphosphonic Acid
EINECS	227-713-4

Quality Control

Our 1,8-Diphosphonooctane is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing, including HPLC for purity, titration for assay, and spectroscopic identification, to ensure it meets precise customer specifications and industry standards. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with each shipment to guarantee traceability and compliance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive) and should be kept under dry conditions to prevent degradation.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (Titration)	≥ 97.0%
Water Content (KF)	≤ 2.0%
Melting Point	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.