Description

p-Phenylen-Dipropiolsaeure (CAS NO 4843-45-2) is a high-purity, conjugated diacid monomer characterized by its rigid para-phenylene core and terminal acetylene groups. This unique molecular structure makes it a critical building block for synthesizing advanced polymers and organic electronic materials. It is essential for R&D and production in industries requiring materials with tailored optoelectronic properties and high thermal stability.

Application

• Polymer Synthesis: Key monomer for producing rigid-rod polymers, polyamides, and polyimides with high thermal and mechanical performance.
• Organic Electronics: Precursor for conjugated polymers and small molecules used in organic light-emitting diodes (OLEDs), organic photovoltaics (OPVs), and field-effect transistors (OFETs).
• Pharmaceutical Intermediates: Serves as a versatile synthon in the development of novel active pharmaceutical ingredients (APIs) and diagnostic agents.
• Liquid Crystal Materials: Used in the synthesis of liquid crystal monomers and polymers for display technologies.
• Crosslinking Agent: Functions as a crosslinker in specialty coatings, adhesives, and resin systems to enhance network density and durability.
• Metal-Organic Frameworks (MOFs): Employed as an organic linker in the construction of porous MOF materials for gas storage, separation, and catalysis.
• Academic & Industrial Research: Fundamental compound for exploring new reactions in click chemistry, Sonogashira coupling, and other catalytic processes.

Basic Information

Product Name	p-Phenylen-Dipropiolsaeure
CAS No.	4843-45-2
Molecular Formula	C12H6O4
Molecular Weight	214.18 g/mol
Synonyms	1,4-Phenylenedipropiolic Acid; 1,4-Bis(2-carboxyethynyl)benzene; p-Diethynylbenzene-4,4'-dicarboxylic Acid; 4,4'-(1,4-Phenylene)bis(2-propynoic acid); Dipropiolic Acid-p-phenylene Ester; p-Phenylene Diacetylene Dicarboxylic Acid; Benzene-1,4-diyldi(prop-2-ynoic acid) (IUPAC)
EINECS	Contact for details

Quality Control

Our p-Phenylen-Dipropiolsaeure is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the high standards required for advanced material synthesis and pharmaceutical applications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with each shipment.

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). The product is moisture-sensitive; keep the container tightly sealed in a dry environment to prevent degradation.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Heavy Metals	≤ 10 ppm
Residue on Ignition	≤ 0.1%

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