Description

Tetrapotassium 4,4'-Carbonylbisphthalate is a high-purity, water-soluble organic salt derived from phthalic acid derivatives. This compound serves as a critical intermediate and functional additive in advanced material synthesis and specialty chemical formulations. It is essential for manufacturers in the polymer, electronics, and fine chemical industries seeking to enhance product performance and process efficiency.

Application

• As a key monomer or cross-linking agent in the synthesis of high-performance polyimides and polyester resins.
• Functioning as a chelating agent or stabilizer in electroplating baths and metal surface treatment solutions.
• Utilized in the formulation of specialty adhesives, coatings, and inks requiring enhanced solubility and thermal stability.
• Acting as an intermediate in the pharmaceutical industry for the synthesis of complex active pharmaceutical ingredients (APIs).
• Employed in research and development for creating novel organic electronic materials and liquid crystals.
• Serving as a catalyst ligand or precursor in various organic synthesis and polymerization reactions.

Basic Information

Product Name	Tetrapotassium 4,4'-Carbonylbisphthalate
CAS No.	56585-48-9
Molecular Formula	C17H6K4O9
Molecular Weight	508.53 g/mol
Synonyms	Potassium 4,4'-Carbonylbisphthalate; Tetrapotassium Biphenyl-4,4'-dicarbonylbis(oxy)bis(4,1-phenylene)diacetate; 4,4'-Carbonylbis(phthalic acid) tetrapotassium salt; Biphenyl-4,4'-dicarbonylbis(oxy)bis(4,1-phenylene)diacetic acid tetrapotassium salt; 1,1'-Biphenyl-4,4'-diyl bis(oxy)bis(4,1-phenylene)diacetic acid tetrapotassium salt; K4CBPA
EINECS	Contact for details

Quality Control

Our Tetrapotassium 4,4'-Carbonylbisphthalate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC and titration methods, to ensure high purity and consistency. Certificates of Analysis (COA) detailing identity, assay, and impurity profiles are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed after opening to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Heavy Metals (as Pb)	≤ 10 ppm
Residue on Ignition	≤ 0.1%
pH (5% aqueous solution)	7.0 - 9.0

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