Description

4-[(3-Carboxy-4-Hydroxy-5-Methylphenyl)(3-Carboxy-5-Methyl-4-Oxo-2,5-Cyclohexadien-1-Ylidene)Methyl]Benzene-1,3-Disulfonic Acid 1,3-Diammonium Salt is a high-purity, water-soluble organic salt valued for its unique chromophoric and complexing properties. This compound serves as a critical intermediate and functional additive in advanced chemical synthesis and analytical applications. It is essential for manufacturers and R&D laboratories in the pharmaceutical, dye, and specialty chemical sectors seeking consistent quality and reliable supply.

Application

• Pharmaceutical Intermediate: Used in the synthesis of active pharmaceutical ingredients (APIs) and diagnostic agents.
• Analytical Chemistry Reagent: Functions as a chromogenic agent or complexometric indicator in spectrophotometric analysis and titration.
• Dye and Pigment Synthesis: Serves as a key precursor for producing specialized dyes, pigments, and colorants.
• Chemical Research: Employed in academic and industrial R&D for studying reaction mechanisms and developing new materials.
• Catalyst and Ligand Preparation: Utilized in the preparation of metal complexes and catalysts for organic transformations.
• Specialty Additive: Incorporated into formulations requiring specific ionic or complexing characteristics.

Basic Information

Item	Details
Product Name	4-[(3-Carboxy-4-Hydroxy-5-Methylphenyl)(3-Carboxy-5-Methyl-4-Oxo-2,5-Cyclohexadien-1-Ylidene)Methyl]Benzene-1,3-Disulfonic Acid 1,3-Diammonium Salt
CAS No.	25522-89-8
Molecular Formula	C23H24N2O11S2
Molecular Weight	568.57 g/mol
Synonyms	Ammonium 4-[(3-Carboxy-4-Hydroxy-5-Methylphenyl)(3-Carboxy-5-Methyl-4-Oxo-2,5-Cyclohexadien-1-Ylidene)Methyl]Benzene-1,3-Disulfonate; 1,3-Benzenedisulfonic Acid, 4-[(3-Carboxy-4-Hydroxy-5-Methylphenyl)(3-Carboxy-5-Methyl-4-Oxo-2,5-Cyclohexadien-1-Ylidene)Methyl]-, Diammonium Salt; Diammonium 4-[(3-Carboxy-4-Hydroxy-5-Methylphenyl)(3-Carboxy-5-Methyl-4-Oxo-2,5-Cyclohexadien-1-Ylidene)Methyl]-1,3-Benzenedisulfonate; CAS 25522-89-8
EINECS	Contact for details

Quality Control

Our 4-[(3-Carboxy-4-Hydroxy-5-Methylphenyl)(3-Carboxy-5-Methyl-4-Oxo-2,5-Cyclohexadien-1-Ylidene)Methyl]Benzene-1,3-Disulfonic Acid 1,3-Diammonium Salt is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC, IR, and titration methods, to ensure it meets precise specifications for identity, purity, and composition. Certificates of Analysis (COA) documenting all test results are available upon request to support your quality assurance and regulatory compliance needs.

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 minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	Yellow to orange-brown powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Residue on Ignition	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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