Description

Butyl Hydrogen Phosphonate CAS NO 16456-56-7 is an organophosphorus compound that serves as a versatile intermediate and reagent in advanced chemical synthesis. Its value lies in its unique phosphonate functional group, which is critical for constructing complex molecules and modifying material properties. This product is essential for researchers and manufacturers in the agrochemical, pharmaceutical, and specialty polymer industries seeking to develop new active ingredients and functional materials.

Application

• Agrochemical Intermediate: A key building block in the synthesis of organophosphate pesticides, herbicides, and plant growth regulators.
• Pharmaceutical Synthesis: Used as a phosphonating agent in the development of prodrugs, nucleotide analogs, and other bioactive molecules.
• Flame Retardant Precursor: Acts as a starting material for producing phosphorus-based flame retardants used in plastics and textiles.
• Ligand and Catalyst Preparation: Employed in the preparation of metal-complexing ligands for catalysis and extraction processes.
• Polymer Modification: Utilized to introduce phosphonate groups into polymer chains to enhance properties like adhesion, flame resistance, or metal chelation.
• Corrosion Inhibitor Formulation: Serves as a component in formulations designed to protect metal surfaces in industrial systems.
• Research & Development: A valuable reagent in organic and medicinal chemistry research for constructing C-P bonds.
• Water Treatment Chemicals: Used in the synthesis of scale and corrosion inhibitors for industrial water treatment applications.

Basic Information

Product Name	Butyl Hydrogen Phosphonate
CAS No.	16456-56-7
Molecular Formula	C₄H₁₁O₃P
Molecular Weight	138.10 g/mol
Synonyms	Butylphosphonic Acid; Mono-n-Butyl Phosphonate; n-Butylphosphonic Acid; Butanephosphonic Acid; Butyl Dihydrogen Phosphite; H-Butylphosphonate; Phosphonic Acid, Butyl-; Butyl Phosphonate (mono)
EINECS	240-512-1

Quality Control

Our Butyl Hydrogen Phosphonate is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including assay by titration and identification by FT-IR, to ensure it meets precise chemical and physical specifications. We provide full traceability and Certificates of Analysis (COA) are available for all shipments to guarantee consistency and compliance with your project requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials such as strong bases and oxidizing agents. Due to its nature as a strong acid/organic solvent, containers must be kept tightly sealed and constructed of compatible materials (e.g., glass or specific plastics). Recommended storage temperature is 15-25°C.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (Titration)	≥ 95.0%
Water Content (KF)	≤ 0.5%
Density (20°C)	~1.15 g/cm³
Refractive Index (20°C)	~1.430

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