Description

Cuprate(3-),[μ-[7-[[3,3'-Dihydroxy-4'-[(2-Hydroxy-6-Sulfo-1-Naphthalenyl)Azo][1,1'-Biphenyl]-4-Yl]Azo]-8-Hydroxy-1,6-Naphthalenedisulfonato(7-)]]-,Trisodium is a complex, water-soluble azo dye metal complex primarily based on copper. This compound matters for its ability to provide intense, stable coloration, particularly in demanding industrial environments where lightfastness and chemical resistance are critical. It is specifically needed by manufacturers in the textile, leather, and specialty ink industries seeking high-performance colorants for synthetic fibers and other substrates.

Application

• Primary dyeing and printing of synthetic fibers such as polyamide (nylon) and modified acrylics.
• Coloration of leather goods requiring high color strength and uniformity.
• Manufacture of specialty inks, including inks for ballpoint pens and fiber-tip markers.
• Production of colored papers and paper products where water-fastness is important.
• As a colorant in the formulation of certain industrial coatings and paints.
• Potential use in biological staining applications for microscopy, given its metal-complex azo structure.

Basic Information

Item	Detail
Product Name	Cuprate(3-),[μ-[7-[[3,3'-Dihydroxy-4'-[(2-Hydroxy-6-Sulfo-1-Naphthalenyl)Azo][1,1'-Biphenyl]-4-Yl]Azo]-8-Hydroxy-1,6-Naphthalenedisulfonato(7-)]]-,Trisodium
CAS No.	72928-71-3
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	C.I. Mordant Black 17; Acid Chrome Dark Blue; Cuprate(3-), [mu-[7-[[3,3'-dihydroxy[1,1'-biphenyl]-4-yl]azo]-8-hydroxy-1,6-naphthalenedisulfonato(7-)]]N,N'-, trisodium; Trisodium (7-((3,3'-dihydroxy(1,1'-biphenyl)-4-yl)azo)-8-hydroxy-1,6-naphthalenedisulphonate)cuprate(3-); Mordant Black 17; C.I. 15705; Acid Chrome Blue Black
EINECS	Contact for details

Quality Control

Our production of Cuprate(3-),[μ-[7-[[3,3'-Dihydroxy-4'-[(2-Hydroxy-6-Sulfo-1-Naphthalenyl)Azo][1,1'-Biphenyl]-4-Yl]Azo]-8-Hydroxy-1,6-Naphthalenedisulfonato(7-)]]-,Trisodium adheres to rigorous quality testing protocols to ensure batch-to-batch consistency, color strength, and purity required for industrial applications. While produced to commercial dye standards, specifications can be aligned with customer requirements. A comprehensive Certificate of Analysis (COA) detailing identity, assay, impurity profile, and physical properties is provided with each shipment.

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). This product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed after each use to prevent absorption of atmospheric moisture, which can affect purity and handling properties.

Specification

Item	Specification
Appearance	Dark blue to black powder or granules
Identification (IR)	Conforms to structure
Assay (Dye Content)	Min. 90%
Moisture (Loss on Drying)	Max. 5.0%
Water Solubility	Freely soluble
Ash Content	Contact for details
Heavy Metals (as Pb)	Max. 20 ppm
pH (1% Solution)	Contact for details

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