Description

N-[5-[(7-Amino-1-hydroxy-3-sodiosulfo-2-naphthalenyl)azo]-2-[[4'-[(7-amino-1-hydroxy-3-sodiosulfo-2-naphthalenyl)azo]-3,3'-dimethyl[1,1'-biphenyl]-4-yl]azo]phenyl]oxamidic acid sodium salt is a high-purity, complex azo dye intermediate of significant industrial importance. Its precise molecular structure is engineered to deliver consistent color properties and reactivity, making it a critical component for producing high-performance dyes and pigments. This compound is essential for manufacturers in the textile, ink, and specialty coatings industries seeking reliable and uniform raw materials for their formulations.

Application

This specialized azo compound serves as a key intermediate in the synthesis of advanced colorants. Its primary and related applications include:

• Primary use as a dye intermediate for the production of high-grade, reactive, and direct dyes.
• Manufacturing of pigments for textile printing and dyeing, offering excellent color fastness.
• Formulation of specialty inks for packaging, security printing, and digital applications.
• Production of colorants for leather and paper industries.
• Potential use in the synthesis of functional dyes for optical data storage or imaging technologies.
• Research and development of novel colorants in academic and industrial laboratories.

Basic Information

Product Name	N-[5-[(7-Amino-1-hydroxy-3-sodiosulfo-2-naphthalenyl)azo]-2-[[4'-[(7-amino-1-hydroxy-3-sodiosulfo-2-naphthalenyl)azo]-3,3'-dimethyl[1,1'-biphenyl]-4-yl]azo]phenyl]oxamidic acid sodium salt
CAS No.	6771-91-1
Molecular Formula	C48H34N10Na3O15S3
Molecular Weight	1180.06 g/mol
Synonyms	Oxamic acid, N-[5-[(7-amino-1-hydroxy-3-sulfo-2-naphthalenyl)azo]-2-[[4'-[(7-amino-1-hydroxy-3-sulfo-2-naphthalenyl)azo][1,1'-biphenyl]-3,3'-diyl]bis(azo)]phenyl]-, trisodium salt; C.I. 29160; Direct Black 166; Direct Black EX; Sirius Black T; Direct Deep Black EX; Trisodium 5-[4-[4-[7-amino-1-hydroxy-3-sulphonato-2-naphthyl)azo]-3,3'-dimethylbiphenyl-4-yl]azo]-5-oxopentylamino]-4-[2-(7-amino-1-hydroxy-3-sulphonatonaphthalen-2-yl)hydrazinylidene]-4,5-dihydro-3-methyl-1H-pyrazol-1-yl]benzenesulphonate (IUPAC variant).
EINECS	Contact for details

Quality Control

Our production of this azo dye intermediate adheres to stringent quality control protocols to ensure batch-to-batch consistency and purity. Quality is verified through advanced analytical techniques including HPLC, UV-Vis spectroscopy, and elemental analysis. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment 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 a controlled 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. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Dark blue to black powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Sulfated Ash	≤ 20.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Passes test

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