Description

7-Amino-4-Hydroxy-3-[[2-Methoxy-4-[(3-Sulfophenyl)Azo]Phenyl]Azo]-2-Naphthalenesulfonic Acid, Compd. With 2,2',2''-Nitriloethanol(1:2) is a high-purity, complex azo dye intermediate and chemical compound. This product is critical for synthesizing specialized dyes and pigments with specific coloristic and fastness properties. It is primarily needed by manufacturers in the textile, ink, and specialty chemical industries for producing high-performance colorants.

Application

• Primary Intermediate for Azo Dyes: Used in the synthesis of acid dyes and direct dyes for textile fibers such as wool, silk, nylon, and paper.
• Specialty Pigment Manufacturing: Serves as a key precursor for producing high-grade pigments used in inks, coatings, and plastics.
• Research & Development: Employed in chemical R&D for developing novel chromophores and functional dyes with specific light-absorption characteristics.
• Biological Staining: Potential use as an intermediate for synthesizing stains used in histological and cytological applications.

Basic Information

Product Name	7-Amino-4-Hydroxy-3-[[2-Methoxy-4-[(3-Sulfophenyl)Azo]Phenyl]Azo]-2-Naphthalenesulfonic Acid, Compd. With 2,2',2''-Nitriloethanol(1:2)
CAS No.	72208-31-2
Molecular Formula	C25H23N5O9S2 · 2(C6H15NO3)
Molecular Weight	Contact for details
Synonyms	7-Amino-4-hydroxy-3-{[2-methoxy-4-[(3-sulfophenyl)diazenyl]phenyl]diazenyl}naphthalene-2-sulfonic acid compound with 2,2',2''-nitrilotriethanol (1:2); Acid Black 210; C.I. 300317; Azo dye intermediate 72208-31-2; Tris(2-hydroxyethyl)ammonium 7-amino-4-hydroxy-3-{[2-methoxy-4-[(3-sulfophenyl)diazenyl]phenyl]diazenyl}naphthalene-2-sulfonate; TEA salt of a disazo dye intermediate
EINECS	Contact for details

Quality Control

Our 7-Amino-4-Hydroxy-3-[[2-Methoxy-4-[(3-Sulfophenyl)Azo]Phenyl]Azo]-2-Naphthalenesulfonic Acid, Compd. With 2,2',2''-Nitriloethanol(1:2) is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistent purity, composition, and performance. Certificates of Analysis (COA) detailing key specifications are available upon request to support your quality assurance protocols.

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 nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product stability and performance.

Specification

Item	Specification
Appearance	Dark colored powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Heavy Metals	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 3.0%

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