Description

1,1,2,3,4-Pentachlorobuta-1,3-Diene is a specialized chlorinated hydrocarbon with the CAS number 5659-44-9, valued for its unique structure as a reactive intermediate in advanced chemical synthesis. This compound is critical for producing high-value, custom molecules where precise halogenation is required. It is primarily sought by R&D chemists and process development teams in the pharmaceutical, agrochemical, and specialty chemical industries for constructing complex molecular architectures.

Application

• Pharmaceutical Intermediate: Serves as a key building block in the synthesis of novel active pharmaceutical ingredients (APIs), particularly for introducing chlorinated motifs.
• Agrochemical Synthesis: Used in the research and production of advanced pesticides and herbicides, where its polychlorinated structure contributes to product efficacy.
• Specialty Polymer Modifier: Acts as a reactive monomer or cross-linking agent in the development of flame-retardant or chemically resistant polymers.
• Organic Synthesis Reagent: Employed in laboratory-scale and pilot-scale organic reactions, including Diels-Alder cycloadditions and nucleophilic substitution reactions.
• Chemical Research: Utilized in academic and industrial R&D for studying the reactivity of polychlorinated dienes and developing new synthetic methodologies.
• Material Science: Investigated for use in creating advanced organic electronic materials or as a precursor for functionalized nanomaterials.

Basic Information

Product Name	1,1,2,3,4-Pentachlorobuta-1,3-Diene
CAS No.	5659-44-9
Molecular Formula	C4HCl5
Molecular Weight	239.31 g/mol
Synonyms	1,1,2,3,4-Pentachloro-1,3-butadiene; Pentachlorobutadiene; 1,3-Butadiene, 1,1,2,3,4-pentachloro-; NSC 8441; 1,1,2,3,4-Pentachlorobuta-1,3-dien; PCB; 1,3-Pentachlorobutadiene
EINECS	227-096-2

Quality Control

Our 1,1,2,3,4-Pentachlorobuta-1,3-Diene is produced and handled under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency. Certificates of Analysis (COA) documenting key parameters such as assay and impurity profiles are provided and available upon request, supporting your quality assurance and regulatory compliance needs.

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 organic solvents. Recommended storage temperature is between 15°C and 25°C. Keep container tightly sealed when not in use to prevent moisture ingress and volatilization.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to reference spectrum
Assay (GC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Related Substances (GC)	Total impurities ≤ 3.0%
Density (at 20°C)	1.60 - 1.65 g/mL

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