Description

5-[(7-Amino-1-Hydroxy-3-Sulpho-2-Naphthyl)Azo]-8-[[4-(Phenylazo)-6-Sulpho-1-Naphthyl]Azo]Naphthalene-2-Sulphonic Acid, Sodium Salt is a high-purity, complex azo dye intermediate with a distinctive polyazo structure. This compound is valued for its ability to impart specific color properties and functional characteristics in advanced dye synthesis. It is primarily utilized by manufacturers in the specialty dyes and pigments industry, particularly for producing high-performance colorants for textiles, inks, and other industrial applications.

Application

• Primary intermediate for the synthesis of high-grade, polyazo direct dyes and reactive dyes for the textile industry.
• Key component in manufacturing pigments for inks, including those used in packaging and commercial printing.
• Used in the production of specialized dyes for leather and paper coloring.
• Potential intermediate for research and development of novel functional dyes with specific light-absorption properties.
• Employed in the creation of colorants for non-textile substrates requiring high color strength and stability.

Basic Information

Item	Detail
Product Name	5-[(7-Amino-1-Hydroxy-3-Sulpho-2-Naphthyl)Azo]-8-[[4-(Phenylazo)-6-Sulpho-1-Naphthyl]Azo]Naphthalene-2-Sulphonic Acid, Sodium Salt
CAS No.	85283-66-5
Molecular Formula	C36H22N6Na3O12S3
Molecular Weight	936.81 g/mol
Synonyms	Direct Black 22 (sodium salt); C.I. 35435; Sodium 5-[(7-amino-1-hydroxy-3-sulfo-2-naphthyl)azo]-8-[[4-(phenylazo)-6-sulfo-1-naphthyl]azo]naphthalene-2-sulfonate; 5-[(7-Amino-1-hydroxy-3-sulfo-2-naphthyl)azo]-8-[[4-(phenylazo)-6-sulfo-1-naphthyl]azo]-2-naphthalenesulfonic acid trisodium salt; C.I. Direct Black 22; Direct Black 22, Na salt; Trisodium 5-[(7-amino-1-hydroxy-3-sulfo-2-naphthalenyl)azo]-8-[[4-(phenylazo)-6-sulfo-1-naphthalenyl]azo]naphthalene-2-sulfonate
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 high purity. Each lot is analyzed against stringent in-house specifications, which typically include parameters for assay (HPLC), impurity profile, and moisture content. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment to support your quality assurance processes.

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). This product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product quality and handling properties.

Specification

Item	Specification
Appearance	Dark blue to black powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95.0%
Moisture (KF)	Max. 5.0%
Water Solubility	Soluble
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.