Description

4-Chloroformylphthalic Anhydride is a high-value, reactive chemical intermediate characterized by its bifunctional anhydride and acid chloride groups. This unique structure makes it a critical building block for synthesizing complex organic molecules, particularly advanced polymers and specialty dyes. It is essential for manufacturers in the pharmaceutical, agrochemical, and advanced materials sectors seeking to develop products with enhanced performance characteristics.

Application

• Polymer Synthesis: A key monomer for the production of high-performance polyimides and polyamides, used in electronics, aerospace, and automotive applications for their thermal stability and mechanical strength.
• Pharmaceutical Intermediates: Serves as a crucial precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for compounds with complex aromatic structures.
• Dye and Pigment Manufacturing: Used to create advanced colorants and optical brighteners with superior fastness and chromatic properties.
• Agrochemicals: Employed in the synthesis of modern herbicides and plant growth regulators that require specific, stable aromatic backbones.
• Liquid Crystal Polymers (LCPs): Acts as a building block in the production of LCPs for high-temperature and precision molding applications.
• Cross-linking Agent: Functions as a reactive cross-linker in epoxy and other resin systems to enhance thermal and chemical resistance.
• Organic Synthesis Reagent: Utilized in laboratory and industrial settings for introducing the phthalic anhydride moiety into target molecules under controlled conditions.

Basic Information

Product Name	4-Chloroformylphthalic Anhydride
CAS No.	1204-28-0
Molecular Formula	C9H3ClO4
Molecular Weight	210.57 g/mol
Synonyms	4-(Chlorocarbonyl)phthalic Anhydride; 4-Carboxyphthalic Anhydride Chloride; Trimellitic Anhydride Acid Chloride; 1,3-Dioxo-1,3-dihydroisobenzofuran-5-carbonyl Chloride; 4-Chlorocarbonylphthalic Anhydride; 5-Chlorocarbonylphthalic Anhydride; Phthalic Anhydride-4-carbonyl Chloride; TMA-Cl
EINECS	214-879-5

Quality Control

Our 4-Chloroformylphthalic Anhydride is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity, IR for identification, and titration for assay, to ensure it meets stringent specifications for high-purity intermediates. Certificates of Analysis (COA) documenting all critical parameters are provided with every shipment to guarantee traceability and consistency for your production processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and should be handled under a dry inert atmosphere to prevent hydrolysis. Keep away from strong bases, amines, alcohols, and moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	118 - 122 °C
Water Content (KF)	≤ 0.5%
Related Substances (HPLC)	Total impurities ≤ 2.0%

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