Description

1,3-Benzenedicarboxylic Acid, 5,5'-(1,3-Butadiyne-1,4-Diyl)Bis- is a specialized aromatic diacid derivative featuring a conjugated diyne bridge, which imparts unique electronic and structural properties. This compound is valued for its role as a high-performance monomer and building block in advanced material synthesis. It is primarily sought by R&D and production teams in the polymer, pharmaceutical, and organic electronics industries seeking to develop novel functional materials with tailored properties.

Application

• Polymer Synthesis: A key monomer for producing high-performance polyamides, polyesters, and polyimides with enhanced thermal stability and mechanical strength.
• Pharmaceutical Intermediates: Serves as a sophisticated building block in the synthesis of complex active pharmaceutical ingredients (APIs) and drug candidates.
• Organic Electronics: Used in the development of conductive polymers, organic semiconductors, and materials for OLEDs and photovoltaic cells due to its conjugated system.
• Metal-Organic Frameworks (MOFs): Functions as an organic linker to construct porous MOFs for gas storage, separation, and catalysis applications.
• Cross-linking Agent: Employed in epoxy resins and other thermoset polymers to increase cross-link density and improve chemical resistance.
• Liquid Crystal Polymers: A component in the synthesis of rigid-rod and liquid crystalline polymers for high-modulus fibers and advanced displays.
• Specialty Coatings: Imparts durability and specific chemical resistance in high-end industrial and protective coatings.
• Research & Development: A valuable tool for academic and industrial research in organic chemistry and material science for creating novel molecular architectures.

Basic Information

Product Name	1,3-Benzenedicarboxylic Acid, 5,5'-(1,3-Butadiyne-1,4-Diyl)Bis-
CAS No.	1239608-21-9
Molecular Formula	C20H10O8
Molecular Weight	378.29 g/mol
Synonyms	5,5'-(Buta-1,3-diyne-1,4-diyl)diisophthalic Acid; Bis(5-carboxy-1,3-phenylene)buta-1,3-diyne; 1,3-Benzenedicarboxylic acid, 5,5'-(1,3-butadiyne-1,4-diyl)bis-; Diacetylene-Linked Diisophthalic Acid; Terephthalic Acid Diacetylene Derivative; Conjugated Diyne Diacid Monomer; BDBD Acid; Contact for details on additional trade names.
EINECS	Contact for details

Quality Control

Our production of 1,3-Benzenedicarboxylic Acid, 5,5'-(1,3-Butadiyne-1,4-Diyl)Bis- adheres to a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation via FT-IR and NMR, to ensure it meets precise customer specifications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment to guarantee traceability and compliance.

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). Keep away from strong acids and organic solvents. The container must be kept tightly sealed to protect the product from moisture and contamination.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Purity (HPLC)	≥ 97.0%
Assay (Titration)	95.0% - 102.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.2%
Heavy Metals (as Pb)	≤ 20 ppm
Single Unknown Impurity (HPLC)	≤ 1.0%

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