Description

2-Naphthalenesulfonic Acid, 8-[(7-Amino-1-Hydroxy-3-Sulfo- 2-Naphthalenyl)Azo]-5-[[4-(Phenylazo)-6-Sulfo -1-Naphthalenyl]Azo]-, Trisodium Salt is a high-purity, water-soluble azo dye intermediate of significant industrial importance. This compound is valued for its ability to impart strong, vibrant colors and its role in synthesizing complex dyes and pigments. It is primarily required by manufacturers in the textile, ink, and specialty chemical industries for producing high-performance colorants.

Application

• Primary Intermediate for Azo Dyes: Serves as a key building block in the synthesis of complex, polyazo direct dyes and acid dyes for textiles like wool, silk, and nylon.
• Pigment Manufacturing: Used in the production of high-quality organic pigments for inks, coatings, and plastics, where color strength and stability are critical.
• Textile Dyeing: Employed in formulations for dyeing and printing processes that require specific shades of red, blue, or black with good wash and light fastness.
• Specialty Chemical Synthesis: Acts as a functional intermediate in the research and development of novel colorants and functional dyes for niche applications.
• Biological Staining: Potential use as a staining agent or chromophore in the development of histological stains for laboratory and diagnostic purposes.
• Analytical Reagents: Can be utilized in the formulation of colorimetric indicators and reagents for analytical chemistry.

Basic Information

Item	Detail
Product Name	2-Naphthalenesulfonic Acid, 8-[(7-Amino-1-Hydroxy-3-Sulfo- 2-Naphthalenyl)Azo]-5-[[4-(Phenylazo)-6-Sulfo -1-Naphthalenyl]Azo]-, Trisodium Salt
CAS No.	6476-10-4
Molecular Formula	C32H19N5Na3O10S3
Molecular Weight	822.66 g/mol (approx.)
Synonyms	Acid Black 107; C.I. 26370; Direct Black 107; Trisodium 8-[(7-amino-1-hydroxy-3-sulphonato-2-naphthyl)azo]-5-[(4-phenylazo-6-sulphonato-1-naphthyl)azo]naphthalene-2-sulphonate; 2-Naphthalenesulfonic acid, 8-[(7-amino-1-hydroxy-3-sulfo-2-naphthalenyl)azo]-5-[[4-(phenylazo)-6-sulfo-1-naphthalenyl]azo]-, trisodium salt; C.I. Acid Black 107; Black 107; Azo Black 107
EINECS	Contact for details

Quality Control

Our production of 2-Naphthalenesulfonic Acid, 8-[(7-Amino-1-Hydroxy-3-Sulfo- 2-Naphthalenyl)Azo]-5-[[4-(Phenylazo)-6-Sulfo -1-Naphthalenyl]Azo]-, Trisodium Salt adheres to rigorous quality testing protocols to ensure batch-to-batch consistency and compliance with industry specifications. Quality is verified through advanced analytical techniques including HPLC and spectrophotometry. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to guarantee traceability and meet your quality assurance requirements.

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 opening 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)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	Contact for details
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.