Description

Chlorophosphonous Acid Dibutyl Ester is a versatile organophosphorus compound primarily used as a key intermediate in chemical synthesis. Its value lies in its reactivity as a phosphorylating and chlorinating agent, enabling the production of more complex phosphorus-containing molecules. This product is essential for manufacturers in the agrochemical, pharmaceutical, and specialty chemical industries who require high-purity intermediates for research and production.

Application

• As a crucial phosphorylation intermediate in the synthesis of organophosphorus pesticides and herbicides.
• In the production of flame retardants and plasticizers for polymer materials.
• As a key building block for pharmaceutical active ingredients and ligands for catalysis.
• In the synthesis of extractants and ligands used in metal separation and recovery processes.
• For research and development of novel organophosphorus compounds with specialized properties.
• As a reactive intermediate in fine chemical and specialty chemical manufacturing.

Basic Information

Product Name	Chlorophosphonous Acid Dibutyl Ester
CAS No.	4124-92-9
Molecular Formula	C8H18ClO2P
Molecular Weight	212.65 g/mol
Synonyms	Dibutyl Chlorophosphonite; Butyl Phosphorochloridite; Chlorodibutoxyphosphine; Phosphorochloridous Acid, Dibutyl Ester; Dibutyl Phosphorochloridite; Butyl Phosphonochloridite; O,O-Dibutyl Phosphorochloridite; Chlorophosphonic Acid Dibutyl Ester
EINECS	223-925-6

Quality Control

Our Chlorophosphonous Acid Dibutyl Ester is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure consistency and high purity, meeting the exacting standards required for use as a synthetic intermediate. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with each shipment to guarantee traceability and support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and reacts with strong acids/organic solvents; keep the container tightly sealed and store under an inert atmosphere such as nitrogen or argon for optimal long-term stability. Isolate from incompatible materials.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Density (at 20°C)	~1.02 g/cm³
Refractive Index (n20D)	~1.435

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