Description

1-Naphthalenesulfonic Acid, 4,5-Dihydroxy-3,6-Bis(2-Sulfo-4-((2,4,6-Trihydroxyphenyl)Azo)Phenyl)Azo)- is a high-purity, complex azo dye intermediate and analytical reagent. This compound is valued for its precise chemical structure, which provides strong chelating and chromogenic properties essential for specialized applications. It is primarily required by manufacturers in the dye and pigment industry, as well as by research laboratories for use as a metal indicator or in the development of advanced colorimetric sensors and diagnostic assays.

Application

• Dye and Pigment Manufacturing: Serves as a critical precursor for the synthesis of high-performance, metal-complex dyes and pigments, particularly for textiles, inks, and coatings.
• Analytical Chemistry Reagent: Used as a sensitive colorimetric reagent and metal ion indicator in complexometric titrations and spectrophotometric analysis.
• Chemical Sensor Development: Employed in research for creating selective sensors and detection kits for specific metal ions (e.g., aluminum, iron) due to its distinct color change upon binding.
• Laboratory Research: Utilized in academic and industrial R&D for studying azo compound chemistry, coordination complexes, and photophysical properties.
• Specialty Chemical Synthesis: Acts as a building block for synthesizing other functionalized naphthalene derivatives with specific sulfonic acid and azo groups.

Basic Information

Product Name	1-Naphthalenesulfonic Acid, 4,5-Dihydroxy-3,6-Bis(2-Sulfo-4-((2,4,6-Trihydroxyphenyl)Azo)Phenyl)Azo)-
CAS No.	116978-87-1
Molecular Formula	C34H22N6O16S3
Molecular Weight	866.76 g/mol
Synonyms	Acid Chrome Blue K; Chromazurol S; 3,6-Bis((2-hydroxy-5-sulfophenyl)azo)-4,5-dihydroxy-2,7-naphthalenedisulfonic acid; Mordant Blue 1; C.I. 43830; Eriochrome Azurol B; Aluminum indicator; 4,5-Dihydroxy-3,6-bis[(2-sulfo-4-[(2,4,6-trihydroxyphenyl)azo]phenyl)azo]-1-naphthalenesulfonic acid
EINECS	Contact for details

Quality Control

Every batch of our 1-Naphthalenesulfonic Acid, 4,5-Dihydroxy-3,6-Bis(2-Sulfo-4-((2,4,6-Trihydroxyphenyl)Azo)Phenyl)Azo)- is manufactured and tested under a strict quality management system. We ensure high purity and batch-to-batch consistency through advanced analytical techniques including HPLC and spectrophotometry. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with each shipment 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 (moisture-sensitive) nature, the container must be kept sealed when not in use to prevent absorption of atmospheric moisture, which may affect product performance.

Specification

Item	Specification
Appearance	Dark brown to black powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Solubility	Soluble in water, alkaline solutions
Heavy Metals (as Pb)	≤ 20 ppm
Sulfated Ash	≤ 0.5%

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