Description

2-Naphthalenesulfonic acid, 6-amino-3-[(4-aminophenyl)azo]-4-hydroxy-, diazotized, coupled with 6-amino-4-hydroxy-2-naphthalenesulfonic acid and 5(or 8)-amino-2-naphthalenesulfonic acid, potassium sodium salts is a high-purity, water-soluble azo dye intermediate of significant industrial importance. This compound is valued for its role in synthesizing vibrant and stable dyes and pigments, particularly for demanding applications requiring specific color fastness and chemical compatibility. It is a critical raw material for manufacturers in the textile, ink, and specialty coatings industries seeking to produce high-performance colorants.

Application

• Primary Intermediate for Azo Dyes & Pigments: Serves as a key building block in the synthesis of complex, high-value azo dyes, especially for fibers like cotton, wool, and nylon.
• Textile Dyeing and Printing: Used in formulations for dyeing and printing textiles, contributing to shades in the orange, red, and brown color ranges with good wash and light fastness.
• Ink Manufacturing: Employed in the production of industrial and specialty printing inks, including those for packaging and security applications.
• Leather Coloring: Utilized in dye formulations for the leather tanning and finishing industry.
• Paper Coloring: Applied in the manufacture of colored papers and paper products.
• Research & Development: Serves as a precise chemical reagent in R&D laboratories for developing new colorants and studying dye chemistry.

Basic Information

Product Name	2-Naphthalenesulfonic acid, 6-amino-3-[(4-aminophenyl)azo]-4-hydroxy-, diazotized, coupled with 6-amino-4-hydroxy-2-naphthalenesulfonic acid and 5(or 8)-amino-2-naphthalenesulfonic acid, potassium sodium salts
CAS No.	90459-19-1
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	C.I. Acid Orange 67; Acid Orange 67; Potassium sodium salt of a diazotized and coupled naphthalenesulfonic acid dye intermediate; 6-Amino-3-[(4-aminophenyl)azo]-4-hydroxy-2-naphthalenesulfonic acid, diazotized, coupled with 6-amino-4-hydroxy-2-naphthalenesulfonic acid and 5(or 8)-amino-2-naphthalenesulfonic acid, potassium sodium salts; Azo dye intermediate for Acid Orange 67; C.I. 14172
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to strict quality control protocols to ensure batch-to-batch consistency and performance reliability. Quality is verified through comprehensive analytical testing, including HPLC for purity and assay, spectrophotometry for color strength, and tests for specific impurities. A Certificate of Analysis (COA) detailing all specifications is provided with every shipment to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture, which can affect performance and handling.

Specification

Item	Specification
Appearance	Dark brown to reddish-brown powder or granules
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Color Strength	100% ± 3% (vs. Standard)
Moisture Content	Max. 5.0%
Water Solubility	Completely soluble
Ash Content	Contact for details
Heavy Metals (as Pb)	Max. 20 ppm

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