Description

Potassium Sodium 7-Hydroxy-8-(Phenylazo)Naphthalene-1,3-Disulphonate is a high-purity azo dye intermediate and analytical reagent. This compound is valued for its precise chemical structure and consistent performance in specialized synthesis and colorimetric applications. It is primarily required by manufacturers in the dye and pigment industry, as well as by research laboratories for analytical and diagnostic purposes.

Application

• Dye and Pigment Intermediate: A key precursor for synthesizing specific azo dyes and pigments, particularly those requiring sulfonated naphthalene structures for enhanced solubility and color properties.
• Analytical Reagent: Used in laboratory settings as a chromogenic agent or indicator in complexometric titrations and colorimetric assays due to its distinct color change properties.
• Biological Staining: Potential application in histology and microscopy for staining cellular components, leveraging its ability to bind to specific biological structures.
• Chemical Research: Serves as a building block in organic synthesis for developing novel compounds with specialized optical or chelating characteristics.
• Industrial Colorant: Used in the formulation of specialized inks, coatings, or plastics where specific shade and stability are required.

Basic Information

Product Name	Potassium Sodium 7-Hydroxy-8-(Phenylazo)Naphthalene-1,3-Disulphonate
CAS No.	83232-33-1
Molecular Formula	C16H9N2O7S2•K•Na
Molecular Weight	Contact for details
Synonyms	7-Hydroxy-8-(phenylazo)naphthalene-1,3-disulfonic acid, potassium sodium salt; Acid Orange 20 (related dye class); C.I. 14600; 1,3-Naphthalenedisulfonic acid, 7-hydroxy-8-(2-phenyldiazenyl)-, potassium sodium salt; Potassium sodium 8-(phenylazo)-7-hydroxynaphthalene-1,3-disulfonate; Azo dye intermediate 83232-33-1; Phenylazonaphthol disulfonate salt
EINECS	Contact for details

Quality Control

Our Potassium Sodium 7-Hydroxy-8-(Phenylazo)Naphthalene-1,3-Disulphonate is produced under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise specifications for critical applications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is available for every shipment to guarantee traceability and compliance.

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 sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Orange to red-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition	Contact for details
Related Substances (HPLC)	Contact for details

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