Description

1-Chlorobutane-2,3-Dione is a versatile chlorinated diketone building block with significant synthetic utility. This high-purity intermediate is valued for its reactivity, enabling the efficient synthesis of complex molecules in research and industrial settings. It is primarily sought after by fine chemical manufacturers and R&D laboratories in the pharmaceutical, agrochemical, and specialty chemical sectors for constructing heterocycles and other advanced structures.

Application

• Pharmaceutical Intermediate: Key building block for the synthesis of active pharmaceutical ingredients (APIs) and complex heterocyclic compounds.
• Agrochemical Synthesis: Used in the production of advanced herbicides, fungicides, and pesticide intermediates.
• Fine Chemical Production: Serves as a precursor for dyes, pigments, and performance chemicals requiring specific chlorinated diketone motifs.
• Organic Synthesis & Research: A valuable reagent in academic and industrial R&D for exploring new reaction pathways and creating novel molecular libraries.
• Material Science: Potential intermediate in the development of specialty polymers and advanced organic materials.

Basic Information

Product Name	1-Chlorobutane-2,3-Dione
CAS No.	5559-62-6
Molecular Formula	C4H5ClO2
Molecular Weight	120.53 g/mol
Synonyms	1-Chloro-2,3-butanedione; 1-Chlorobutane-2,3-dione; 2,3-Butanedione, 1-chloro-; 1-Chloro-2,3-dioxobutane; Chlorodiacetylmethane; α-Chlorodiacetylmethane; 1-Chlorobutan-2,3-dione
EINECS	226-909-5

Quality Control

Our 1-Chlorobutane-2,3-Dione is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including assay (HPLC/GC), identity confirmation (IR, NMR), and impurity profiling to ensure it meets the high standards required for synthetic applications. A detailed Certificate of Analysis (COA) is provided with every shipment, guaranteeing traceability and consistent quality.

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 reducing agents. Recommended storage temperature is 2-8°C for long-term stability. The compound is light-sensitive and should be stored away from light.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC/HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Related Substances (HPLC)	Total impurities ≤ 2.0%
Residue on Ignition	≤ 0.1%

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