Description

Disodium 4-Hydroxy-6-(Phenylamino)-3-[(4-Sulphonatophenyl)Azo]Naphthalene-2-Sulphonate is a high-purity, water-soluble azo dye intermediate known for its excellent chromophore properties. This compound is critical for producing vibrant and stable colorants with strong tinctorial strength and good lightfastness. It is primarily required by manufacturers in the textile, ink, and specialty coatings industries for synthesizing high-performance dyes and pigments.

Application

• Primary Intermediate for Azo Dyes: Key building block for synthesizing acid dyes, direct dyes, and reactive dyes used in textile coloring.
• Inkjet and Printing Inks: Used in the formulation of high-quality inks for digital and industrial printing applications, providing sharp color definition.
• Specialty Coatings and Paints: Imparts color and stability to industrial coatings, automotive paints, and decorative finishes.
• Paper and Leather Dyeing: Employed in the coloration of paper products and leather goods.
• Biological Staining Reagents: Potential use as a staining agent in histology and microscopy due to its specific chromogenic structure.
• Research and Development: Serves as a reference standard and a key reactant in chemical research for developing new colorant molecules.

Basic Information

Product Name	Disodium 4-Hydroxy-6-(Phenylamino)-3-[(4-Sulphonatophenyl)Azo]Naphthalene-2-Sulphonate
CAS No.	6222-56-6
Molecular Formula	C22H15N3Na2O8S2
Molecular Weight	559.48 g/mol
Synonyms	Acid Orange 67; C.I. 14172; Disodium 6-anilino-3-[(4-sulfophenyl)azo]-4-hydroxy-2,7-naphthalenedisulfonate; 6-Anilino-3-[(4-sulfophenyl)azo]-4-hydroxy-2,7-naphthalenedisulfonic acid disodium salt; 2,7-Naphthalenedisulfonic acid, 6-(phenylamino)-3-((4-sulfophenyl)azo)-4-hydroxy-, disodium salt; Azo dye intermediate 6222-56-6; C.I. Acid Orange 67
EINECS	Contact for details

Quality Control

Our Disodium 4-Hydroxy-6-(Phenylamino)-3-[(4-Sulphonatophenyl)Azo]Naphthalene-2-Sulphonate is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high purity. The product is tested against stringent in-house specifications, which typically include identity confirmation, assay, and impurity profiling. Certificates of Analysis (COA) detailing all test results are available upon request to support your quality assurance and regulatory compliance needs.

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 tightly sealed after each use to prevent absorption of atmospheric moisture, which can affect product quality and performance.

Specification

Item	Specification
Appearance	Orange to reddish-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	≤ 20.0%
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.