Description

N-[5-[[2-Hydroxy-3,6-bis(sodiosulfo)-1-naphthalenyl]azo]-2-[[4'-[[2-hydroxy-3,6-bis(sodiosulfo)-1-naphthalenyl]azo]-3,3'-dimethoxy[1,1'-biphenyl]-4-yl]azo]phenyl]oxamidic acid sodium salt is a high-purity, complex disazo dye intermediate. This compound is valued for its ability to impart strong, stable color properties in demanding industrial applications. It is primarily sought by manufacturers in the textile, leather, and specialty ink industries for producing high-performance dyes and pigments.

Application

• Textile Dyeing: As a key intermediate for synthesizing reactive and direct dyes for cotton, wool, and nylon fibers.
• Leather Coloring: Used in the production of dyes for achieving deep, uniform shades on leather goods.
• Ink Manufacturing: Serves as a precursor for pigments in specialty printing inks, including inks for packaging and security applications.
• Paper Coloring: Employed in the synthesis of dyes for coloring high-grade papers and paper products.
• Research & Development: Utilized as a standard or building block in chemical research for developing new chromophores and functional materials.

Basic Information

Product Name	N-[5-[[2-Hydroxy-3,6-bis(sodiosulfo)-1-naphthalenyl]azo]-2-[[4'-[[2-hydroxy-3,6-bis(sodiosulfo)-1-naphthalenyl]azo]-3,3'-dimethoxy[1,1'-biphenyl]-4-yl]azo]phenyl]oxamidic acid sodium salt
CAS No.	6897-37-6
Molecular Formula	C52H30N8Na6O22S4
Molecular Weight	~1413.1 g/mol (Contact for exact details)
Synonyms	Acid Black 210; C.I. 300317; Disodium 6,6'-[[3,3'-dimethoxy[1,1'-biphenyl]-4,4'-diyl]bis(azo)]bis[4-hydroxy-3-[[2-(hydroxy-kO)oxaloyl]amino]phenyl]azo]bis[5-hydroxy-2,7-naphthalenedisulfonate]; Oxamic acid, N-[5-[[2-hydroxy-3,6-disulfo-1-naphthalenyl]azo]-2-[[4'-[[2-hydroxy-3,6-disulfo-1-naphthalenyl]azo]-3,3'-dimethoxy[1,1'-biphenyl]-4-yl]azo]phenyl]-, sodium salt (1:?); Leather Black Dye Intermediate; Complex Disazo Dye
EINECS	Contact for details

Quality Control

Our production of N-[5-[[2-Hydroxy-3,6-bis(sodiosulfo)-1-naphthalenyl]azo]-2-[[4'-[[2-hydroxy-3,6-bis(sodiosulfo)-1-naphthalenyl]azo]-3,3'-dimethoxy[1,1'-biphenyl]-4-yl]azo]phenyl]oxamidic acid sodium salt adheres to stringent quality protocols to ensure batch-to-batch consistency and performance reliability. All materials undergo comprehensive analytical testing, including HPLC for purity and spectrophotometry for color strength verification. Certificates of Analysis (COA) documenting key specifications are available for every batch 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 sealed when not in use to prevent absorption of atmospheric moisture, which can affect product performance and handling.

Specification

Item	Specification
Appearance	Dark brown to black powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Moisture Content	Max. 5.0%
Ash Content (Sulfated)	Contact for details
Heavy Metals (as Pb)	Max. 20 ppm
Solubility (in Water)	Soluble

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