Description

2,7-Naphthalenedisulfonic acid, 5-amino-4-hydroxy-3-[[4'- [(1-hydroxy-4-sulfo-2-naphthalenyl)azo]-3,3'-dimethoxy [1,1'-biphenyl]-4-yl]azo]-, dilithium monosodium salt is a high-purity, metal-complex azo dye intermediate of significant industrial importance. Its complex structure provides excellent chromophoric properties and stability, making it a critical component for producing high-performance colorants. This compound is primarily sought after by manufacturers in the textile, ink, and specialty pigment industries for creating vivid and durable dyes.

Application

• Primary intermediate for the synthesis of high-grade, metal-complex azo dyes.
• Key component in the production of dyes for textile fibers, including nylon, wool, and silk.
• Used in manufacturing pigments for industrial inks, such as those for packaging and printing.
• Employed in the formulation of specialized colorants for leather finishing and treatment.
• Potential use in the research and development of functional dyes for optical or electronic applications.
• Serves as a standard or reference material in analytical and quality control laboratories for dye analysis.

Basic Information

Product Name	2,7-Naphthalenedisulfonic acid, 5-amino-4-hydroxy-3-[[4'- [(1-hydroxy-4-sulfo-2-naphthalenyl)azo]-3,3'-dimethoxy [1,1'-biphenyl]-4-yl]azo]-, dilithium monosodium salt
CAS No.	75673-19-7
Molecular Formula	C34H22Li2N6NaO14S4
Molecular Weight	912.8 g/mol (approx.)
Synonyms	Acid Black 194; C.I. 20265; Dilithium monosodium 5-amino-4-hydroxy-3-[[4'-[(1-hydroxy-4-sulfo-2-naphthyl)azo]-3,3'-dimethoxybiphenyl-4-yl]azo]-2,7-naphthalenedisulfonate; C.I. Acid Black 194; Acid Black 194, lithium sodium salt; Azo dye intermediate 75673-19-7; 3-[[4'-[(1-Hydroxy-4-sulfo-2-naphthalenyl)azo]-3,3'-dimethoxy[1,1'-biphenyl]-4-yl]azo]-5-amino-4-hydroxy-2,7-naphthalenedisulfonic acid dilithium monosodium salt
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to strict quality management systems to ensure batch-to-batch consistency and purity. Every lot is analyzed using advanced techniques like HPLC and spectrophotometry to confirm identity and strength. A comprehensive Certificate of Analysis (COA) detailing purity, impurity profile, and physical specifications is provided with each shipment 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). This material is hygroscopic (moisture-sensitive); ensure the container is kept tightly sealed to prevent absorption of atmospheric moisture.

Specification

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

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