Description

Sodium 4-Acetamido-5-Hydroxy-6-[(2,3,5-Trichloro-6-Hydroxyphenyl)Azo]Naphthalene-1-Sulphonate is a specialized, high-purity azo dye intermediate and analytical reagent. Its complex molecular structure provides unique chromophoric and chelating properties, making it a critical component for precise colorimetric analysis and the synthesis of high-performance dyes. This compound is essential for manufacturers and research laboratories in the chemical, analytical, and specialty materials sectors requiring consistent quality and reliable supply for sensitive applications.

Application

• Analytical Chemistry Reagent: Primarily used as a sensitive colorimetric reagent for the spectrophotometric determination and complexometric titration of specific metal ions in environmental and industrial samples.
• Specialty Dye Intermediate: Serves as a key precursor in the synthesis of complex azo dyes, particularly for applications requiring specific shades and high lightfastness.
• Biochemical Staining: Employed in histological and cytological staining procedures in life science research due to its selective binding properties.
• Indicator Synthesis: Used in the manufacture of pH indicators and other chemical indicators for laboratory and industrial process monitoring.
• Photographic Chemicals: Can be utilized in the formulation of certain photographic chemicals and sensitizers.
• Research & Development: A valuable tool in chemical R&D for studying azo coupling reactions and developing new chromogenic compounds.

Basic Information

Product Name	Sodium 4-Acetamido-5-Hydroxy-6-[(2,3,5-Trichloro-6-Hydroxyphenyl)Azo]Naphthalene-1-Sulphonate
CAS No.	3819-12-3
Molecular Formula	C18H10Cl3N3NaO6S
Molecular Weight	528.70 g/mol
Synonyms	4-Acetamido-5-hydroxy-6-[(2,3,5-trichloro-6-hydroxyphenyl)azo]-1-naphthalenesulfonic acid sodium salt; C.I. Mordant Blue 13; Chromazurol S sodium salt; Sodium Chromazurol S; Aluminon; Ammonium aurintricarboxylate (related compound); 5-[(3-Carboxy-4-hydroxyphenyl)(3-carboxy-4-oxo-2,5-cyclohexadien-1-ylidene)methyl]-2-hydroxybenzoic acid triammonium salt (common name for Aluminon); Aurintricarboxylic acid ammonium salt.
EINECS	Contact for details

Quality Control

Our production of Sodium 4-Acetamido-5-Hydroxy-6-[(2,3,5-Trichloro-6-Hydroxyphenyl)Azo]Naphthalene-1-Sulphonate adheres to stringent quality protocols to ensure batch-to-batch consistency and performance reliability for analytical and synthetic applications. Each lot is characterized using advanced analytical techniques including HPLC, UV-Vis spectroscopy, and elemental analysis. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to support your quality assurance and regulatory 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 (moisture-sensitive) nature, the container must be kept tightly sealed after each use to prevent absorption of atmospheric moisture, which can affect purity and performance. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Dark red to brownish-red powder
Identification (IR)	Conforms to reference spectrum
Identification (UV-Vis)	Conforms
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Residue on Ignition (Sulfated Ash)	15.0% - 20.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Clear, red to reddish-brown solution

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