Description

5,5'-(Propane-1,3-Diylbis(Oxy))Diisophthalic Acid is a high-purity aromatic dicarboxylic acid derivative featuring a flexible propane-1,3-diylbis(oxy) linker. This compound serves as a critical advanced intermediate for the synthesis of specialized polymers and functional materials, offering precise structural control. It is primarily utilized by R&D chemists and process engineers in the pharmaceutical, agrochemical, and high-performance polymer industries for developing novel products with tailored properties.

Application

• Polymer Synthesis: A key monomer for producing specialty polyesters, polyamides, and polyimides with enhanced thermal stability and mechanical properties.
• Pharmaceutical Intermediates: Used in the research and development of active pharmaceutical ingredients (APIs), particularly for constructing complex molecular architectures.
• Agrochemicals: Serves as a building block for synthesizing novel herbicides, fungicides, and plant growth regulators.
• Liquid Crystal Polymers (LCPs): An essential component in the manufacture of high-performance LCPs used in electronics and advanced displays.
• Metal-Organic Frameworks (MOFs): Acts as an organic linker in the construction of porous MOF materials for gas storage, separation, and catalysis.
• Cross-linking Agent: Employed in epoxy resin systems and other thermosetting polymers to improve cross-link density and performance.
• Dye & Pigment Intermediates: Used in the synthesis of high-value, color-fast organic dyes and pigments.
• Adhesive & Coating Formulations: Incorporated to enhance the durability, chemical resistance, and adhesion properties of industrial coatings and adhesives.

Basic Information

Product Name	5,5'-(Propane-1,3-Diylbis(Oxy))Diisophthalic Acid
CAS No.	433216-78-5
Molecular Formula	C21H18O10
Molecular Weight	430.36 g/mol
Synonyms	1,3-Bis(3,5-dicarboxyphenoxy)propane; Propane-1,3-diyl bis(3,5-dicarboxybenzoate); 5,5'-[1,3-Propanediylbis(oxy)]di-1,3-benzenedicarboxylic acid; Bis(3,5-dicarboxyphenoxy)propane; 3,3'-(Propane-1,3-diyldioxy)bis(benzene-1,2-dicarboxylic acid) (isomer); PDOIPA; Contact for additional trade names.
EINECS	Contact for details

Quality Control

Our production of 5,5'-(Propane-1,3-Diylbis(Oxy))Diisophthalic Acid adheres to stringent quality management protocols. Each batch undergoes comprehensive analytical testing, including HPLC for purity, IR and NMR for structural confirmation, and tests for residual solvents and heavy metals. We provide a detailed Certificate of Analysis (COA) with every shipment, ensuring traceability and compliance with your specific R&D or production requirements. Custom purity grades and analytical packages are available.

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). Due to its hygroscopic nature, the container must be kept tightly sealed after each use to prevent moisture absorption, which can affect purity and performance. Keep away from incompatible materials such as strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Purity (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm
Residual Solvents (GC)	Meets ICH guidelines

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