Description

Trisodium Hydrogen 4,4'-Carbonylbisphthalate is a high-purity, water-soluble organic salt derived from the partial neutralization of 4,4'-carbonylbisphthalic acid. This compound is valued for its role as a key intermediate and functional additive in advanced material synthesis and specialty chemical manufacturing. It is primarily sought by industries involved in polymer production, pharmaceutical formulation, and the development of high-performance coatings and adhesives.

Application

• Polymer Intermediate: A crucial monomer or co-monomer in the synthesis of high-performance polyimides, polyesters, and polyamides for engineering plastics.
• Pharmaceutical Synthesis: Serves as a building block or salt form in the development of active pharmaceutical ingredients (APIs) and drug delivery systems.
• Crosslinking Agent: Used in the formulation of thermosetting resins, coatings, and adhesives to enhance thermal stability and mechanical properties.
• Chelating Agent: Functions as a metal ion sequestrant in water treatment formulations and specialty cleaning products.
• Electrolyte Additive: Investigated for use in advanced battery systems to improve electrolyte stability and performance.
• Analytical Reagent: Employed as a standard or reagent in chromatographic analysis and other laboratory procedures.

Basic Information

Product Name	Trisodium Hydrogen 4,4'-Carbonylbisphthalate
CAS No.	68226-91-5
Molecular Formula	C17H7Na3O9
Molecular Weight	440.20 g/mol
Synonyms	4,4'-Carbonylbisphthalic Acid Trisodium Salt; Trisodium 4,4'-(Carbonylbis(phthalate)); 1,1',3,3'-Benzophenonetetracarboxylic Acid 1,1',3-Trisodium Salt; Sodium Hydrogen 4,4'-Carbonylbisphthalate; BTDA Trisodium Salt (Partial); 4,4'-(Carbonyldi-1,3-phenylene)bis(1,3-benzenedicarboxylic acid) trisodium salt
EINECS	Contact for details

Quality Control

Our Trisodium Hydrogen 4,4'-Carbonylbisphthalate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including assay by HPLC, identification by IR spectroscopy, and control of key impurities, to ensure it meets precise customer specifications and industry standards. A comprehensive Certificate of Analysis (COA) detailing purity, physical properties, and test results is provided with every 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). Due to its hygroscopic nature, the container must be kept tightly sealed after opening to prevent moisture absorption, which can affect product quality and handling properties.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Heavy Metals (as Pb)	≤ 20 ppm
Residual Solvents (GC)	Meets ICH guidelines
pH (5% Solution)	7.5 - 9.5

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