Description

1(3H)-Isobenzofuranone, 3,3-Bis(4-Hydroxyphenyl)-, Potassium Salt (1:) is a high-purity, specialized organic salt with significant industrial utility. This compound is valued for its role as a key intermediate in the synthesis of advanced polymers and high-performance materials. It is primarily sought by manufacturers in the polymer, specialty chemical, and pharmaceutical development sectors for research and production applications.

Application

• Polymer Intermediate: A crucial monomer or chain extender in the production of high-performance polycarbonates, polyesters, and polyarylates.
• Specialty Chemical Synthesis: Serves as a key building block for synthesizing complex organic molecules, including dyes, pigments, and optical brighteners.
• Pharmaceutical Research: Used as an advanced intermediate in the research and development of novel active pharmaceutical ingredients (APIs).
• Material Science: Investigated for use in creating advanced composites and engineering plastics with enhanced thermal and mechanical properties.
• Cross-linking Agent: Potential application as a cross-linking agent in epoxy resin systems and other thermosetting polymers.

Basic Information

Product Name	1(3H)-Isobenzofuranone, 3,3-Bis(4-Hydroxyphenyl)-, Potassium Salt (1:)
CAS No.	128734-39-4
Molecular Formula	C20H13KO5
Molecular Weight	372.41 g/mol
Synonyms	Phenol, 4,4'-(3-oxo-1,3-dihydro-1-isobenzofuranylidene)bis-, potassium salt; Bisphenol-AF Potassium Salt; 3,3-Bis(4-hydroxyphenyl)phthalide Potassium Salt; Potassium 3,3-bis(4-hydroxyphenyl)-1(3H)-isobenzofuranone; AF-BPA Potassium Salt; 4,4'-(3-Oxo-1,3-dihydroisobenzofuran-1-ylidene)diphenol potassium salt
EINECS	Contact for details

Quality Control

Our 1(3H)-Isobenzofuranone, 3,3-Bis(4-Hydroxyphenyl)-, Potassium Salt (1:) is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and other critical parameters is provided with every shipment to guarantee compliance with your specifications.

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 to prevent moisture absorption, which can affect product stability and performance.

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
Residue on Ignition	Reported on COA
Related Substances (HPLC)	Individual impurity ≤ 0.5%; Total impurities ≤ 2.0%

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