Description

1,3-Benzenedicarbonyl Chloride is a high-purity, reactive aromatic diacid chloride essential for advanced organic synthesis. This compound serves as a critical building block for creating high-performance polymers and specialty chemicals, offering reliable reactivity and consistent quality. It is primarily required by manufacturers in the pharmaceutical, agrochemical, and polymer industries for applications such as polyamide synthesis and the production of active pharmaceutical ingredients (APIs).

Application

• Polymer Synthesis: A key monomer for the production of high-performance aromatic polyamides (aramids) and polyesters, imparting thermal and chemical resistance.
• Pharmaceutical Intermediates: Used in the synthesis of complex drug molecules and active pharmaceutical ingredients (APIs), particularly those requiring isophthaloyl linkages.
• Agrochemical Production: Serves as a precursor in the manufacture of certain herbicides, fungicides, and plant growth regulators.
• Liquid Crystal Polymers (LCPs): An important monomer for creating LCPs used in electronics, automotive, and aerospace components.
• Dye and Pigment Intermediates: Employed in the synthesis of specialized dyes and organic pigments.
• Cross-linking Agent: Functions as a cross-linker for resins and polymers to enhance mechanical properties and stability.
• Laboratory Research: Used as a versatile reagent in organic chemistry research and development for introducing the isophthaloyl group.
• Specialty Coatings: Contributes to the formulation of high-durability, corrosion-resistant coatings.

Basic Information

Item	Detail
Product Name	1,3-Benzenedicarbonyl Chloride
CAS No.	99-63-8
Molecular Formula	C8H4Cl2O2
Molecular Weight	203.02 g/mol
Synonyms	Isophthaloyl Chloride; Isophthalic Acid Dichloride; Isophthaloyl Dichloride; m-Phthaloyl Chloride; Benzene-1,3-dicarbonyl Chloride; 1,3-Dicarboxybenzene Dichloride; IPC; m-PDC
EINECS	202-774-1

Quality Control

Our 1,3-Benzenedicarbonyl Chloride is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. We provide comprehensive Certificates of Analysis (COA) for each lot, detailing key parameters such as assay, impurity profile, and physical characteristics. Our quality commitment aligns with cGMP principles where applicable, and we support compliance with global regulatory standards including REACH.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic and moisture-sensitive nature, the container must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) after initial opening to prevent hydrolysis. Keep away from heat, open flames, and incompatible materials such as water, alcohols, strong bases, and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline solid
Identification (IR)	Conforms
Assay (HPLC)	≥ 99.0 %
Free Acid (as Isophthalic Acid)	≤ 0.5 %
Water Content (KF)	≤ 0.1 %
Melting Point	43 - 45 °C

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