Description

7-Amino-4-Hydroxy-3-[[4-(1-Naphtylazo)-7-Sulfo-1-Naphtyl]Azo]-2-Naphthalenesulfonic Acid is a high-purity, complex azo dye intermediate essential for synthesizing specialized colorants. This compound matters for its ability to impart specific, stable hues and functional properties in advanced materials. It is primarily needed by manufacturers in the dye and pigment industry, as well as researchers developing functional dyes for analytical chemistry and specialized coatings.

Application

• Primary intermediate for the synthesis of high-performance azo dyes and pigments.
• Key component in the production of dyes for textiles, leather, and paper.
• Used in the formulation of specialized dyes for inks and toners.
• Potential precursor for functional dyes used in analytical reagents and biological staining.
• Research and development of novel colorants for plastics and polymers.
• Manufacturing of dyes for lacquers and coatings requiring specific lightfastness.

Basic Information

Product Name	7-Amino-4-Hydroxy-3-[[4-(1-Naphtylazo)-7-Sulfo-1-Naphtyl]Azo]-2-Naphthalenesulfonic Acid
CAS No.	75627-25-7
Molecular Formula	C30H20N6O8S2
Molecular Weight	656.64 g/mol
Synonyms	Acid Black 210; C.I. 300310; 7-Amino-4-hydroxy-3-{[4-[(1-naphthyl)diazenyl]-7-sulfo-1-naphthyl]diazenyl}-2-naphthalenesulfonic acid; 1-Naphthalenesulfonic acid, 7-amino-4-hydroxy-3-[[4-[(1-naphthyl)azo]-7-sulfo-1-naphthyl]azo]-; 7-Amino-4-hydroxy-3-{[4-(1-naphthylazo)-7-sulfo-1-naphthyl]azo}-2-naphthalenesulfonic acid; Black 210; C.I. Acid Black 210
EINECS	Contact for details

Quality Control

Our production of 7-Amino-4-Hydroxy-3-[[4-(1-Naphtylazo)-7-Sulfo-1-Naphtyl]Azo]-2-Naphthalenesulfonic Acid adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing to ensure high purity and consistent performance for your synthesis processes. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available upon request.

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 to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Dark powder or crystals
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm

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