Description

Disodium 4-Hydroxyisophthalate is the disodium salt derivative of 4-hydroxyisophthalic acid, a key aromatic dicarboxylate compound. This high-purity intermediate is valued for its role in synthesizing advanced polymers, dyes, and specialty chemicals where precise molecular structure and consistent quality are critical. It serves as an essential building block for manufacturers in the pharmaceutical, agrochemical, and performance polymer industries seeking reliable and scalable raw materials.

Application

• Pharmaceutical Intermediate: Used in the synthesis of active pharmaceutical ingredients (APIs) and complex drug molecules.
• Polymer & Resin Production: Acts as a monomer or chain modifier in the manufacture of high-performance polyesters, polyamides, and liquid crystal polymers (LCPs).
• Dye & Pigment Synthesis: Serves as a key precursor for producing azo dyes, pigments, and optical brighteners.
• Agrochemical Formulations: Employed in the development of herbicides, fungicides, and other crop protection agents.
• Coating & Adhesive Additive: Functions as a cross-linking agent or property enhancer in specialty coatings and adhesives.
• Chemical Research & Development: Utilized as a standard or reagent in organic synthesis and material science research.

Basic Information

Product Name	Disodium 4-Hydroxyisophthalate
CAS No.	53566-35-1
Molecular Formula	C8H4Na2O5
Molecular Weight	226.09 g/mol
Synonyms	4-Hydroxyisophthalic Acid Disodium Salt; Disodium 4-Hydroxybenzene-1,3-dicarboxylate; Isophthalic Acid, 4-Hydroxy-, Disodium Salt; Sodium 4-Hydroxyisophthalate; 1,3-Benzenedicarboxylic acid, 4-hydroxy-, disodium salt; 53566-35-1; 4-Hydroxyisophthalic acid sodium salt
EINECS	Contact for details

Quality Control

Our Disodium 4-Hydroxyisophthalate is manufactured under a strict quality management system to ensure batch-to-batch consistency and high purity. Each lot is subjected to comprehensive analytical testing, including identification, assay, and impurity profiling. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee compliance with your specifications and industry standards.

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 crystalline powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Heavy Metals (as Pb)	≤ 20 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.