Description

2,4-Dichloro-2-Butenal is a versatile chlorinated aldehyde intermediate of significant interest in synthetic organic chemistry. Its reactive α,β-unsaturated carbonyl structure makes it a valuable building block for the synthesis of more complex molecules, particularly in the pharmaceutical and agrochemical sectors. This compound is essential for researchers and manufacturers developing active ingredients, fine chemicals, and specialized polymers who require high-purity, reliable intermediates.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of active pharmaceutical ingredients (APIs), especially those containing halogenated heterocycles.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and insecticides, leveraging its reactive dichloro and aldehyde functionalities.
• Fine Chemical Production: Serves as a building block for specialty chemicals, dyes, and functional materials.
• Research & Development: A valuable reagent in academic and industrial R&D for exploring new synthetic pathways and novel compound libraries.
• Polymer Modification: Can be used to introduce reactive aldehyde groups into polymer chains for cross-linking or further functionalization.

Basic Information

Product Name	2,4-Dichloro-2-Butenal
CAS No.	26394-31-0
Molecular Formula	C4H4Cl2O
Molecular Weight	138.98 g/mol
Synonyms	2,4-Dichlorobut-2-enal; (E)-2,4-Dichlorobut-2-enal; trans-2,4-Dichloro-2-butenal; 2-Butenal, 2,4-dichloro-; NSC 404087; 2,4-Dichlorocrotonaldehyde
EINECS	Contact for details

Quality Control

Our 2,4-Dichloro-2-Butenal is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including assay, identity confirmation, and impurity profiling. Certificates of Analysis (COA) detailing all specifications are provided with every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at room temperature (15-25°C). Due to its light-sensitive and easily oxidized nature, it is recommended to store under an inert atmosphere (e.g., nitrogen or argon) for long-term stability. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC/HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%

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