Description

4-[Bis[4-Hydroxy-3-(Sodiooxycarbonyl)-1-Naphthalenyl]Methylene]-1,4-Dihydro-1-Oxonaphthalene-2-Carboxylic Acid Sodium Salt is a high-purity, water-soluble organic salt with a complex naphthalene-based structure, valued for its functional properties in advanced material synthesis. This compound is critical for industrial and research applications requiring precise chemical functionality and consistent batch-to-batch quality. It is primarily sought after by manufacturers and R&D laboratories in the specialty chemical, dye, and pharmaceutical intermediate sectors.

Application

• As a key intermediate in the synthesis of complex organic dyes and pigments.
• In the development of functional materials for optical and electronic applications.
• As a chelating agent or ligand precursor in coordination chemistry and catalysis research.
• For use in analytical chemistry as a reagent or standard.
• In pharmaceutical research for the synthesis of novel active pharmaceutical ingredients (APIs).
• As a specialized monomer or additive in polymer chemistry.

Basic Information

Product Name	4-[Bis[4-Hydroxy-3-(Sodiooxycarbonyl)-1-Naphthalenyl]Methylene]-1,4-Dihydro-1-Oxonaphthalene-2-Carboxylic Acid Sodium Salt
CAS No.	6837-67-8
Molecular Formula	C34H19Na3O11
Molecular Weight	664.47 g/mol
Synonyms	4-[Bis(4-Hydroxy-3-(sodiooxycarbonyl)-1-naphthyl)methylene]-1,4-dihydro-1-oxo-2-naphthalenecarboxylic Acid Sodium Salt; Trisodium 4,4'-[(4-oxo-1(4H)-naphthylidene)methylene]di(3-hydroxy-1-naphthoate); C.I. 58055; Acid Blue 92; Erioglaucine A; Patent Blue A; Sodium 4-[bis(4-hydroxy-3-sodiooxycarbonyl-1-naphthyl)methylene]-1,4-dihydro-1-oxo-2-naphthalenecarboxylate
EINECS	229-912-9

Quality Control

Our production of 4-[Bis[4-Hydroxy-3-(Sodiooxycarbonyl)-1-Naphthalenyl]Methylene]-1,4-Dihydro-1-Oxonaphthalene-2-Carboxylic Acid Sodium Salt adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency. Certificates of Analysis (COA) detailing specific results are provided and can be tailored to meet customer or regulatory requirements.

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 (moisture-sensitive) nature, the container must be kept sealed to minimize exposure to atmospheric humidity.

Specification

Item	Specification
Appearance	Dark blue to blue-black powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Residue on Ignition (Sulfated Ash)	20.0% - 25.0%
Heavy Metals (as Pb)	≤ 20 ppm
Water Solubility	Freely soluble

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