Description

Tetrasodium 5,5'-[Iminobis[(1-Hydroxy-3-Sulphonato-6,2-Naphthylene)Azo(2,5-Dimethoxy-4,1-Phenylene)Azo]]Bis(Salicylate) is a high-purity, water-soluble azo dye intermediate of significant commercial importance. Its complex polyfunctional structure makes it a critical precursor for synthesizing specialized dyes and pigments with enhanced color fastness and specific optical properties. This compound is essential for manufacturers in the textile, ink, and specialty coatings industries seeking to produce high-performance colorants.

Application

• Primary Intermediate for Azo Dyes & Pigments: Serves as a key building block in the synthesis of complex, high-value azo dyes, particularly for textile fibers like cotton, wool, and nylon.
• Specialty Ink Formulations: Used in the production of pigments for high-quality printing inks, including those for packaging and security applications.
• Functional Dyes for Coatings: Employed in creating dyes for industrial coatings and paints where specific light absorption or chemical resistance is required.
• Research & Development: A valuable compound for R&D laboratories focusing on novel chromophores, dye chemistry, and material science.
• Potential Use in Analytical Chemistry: May be utilized as a colorimetric reagent or indicator in specific analytical methods due to its distinct chromophoric system.

Basic Information

Product Name	Tetrasodium 5,5'-[Iminobis[(1-Hydroxy-3-Sulphonato-6,2-Naphthylene)Azo(2,5-Dimethoxy-4,1-Phenylene)Azo]]Bis(Salicylate)
CAS No.	6548-31-8
Molecular Formula	C52H32N6Na4O20S2
Molecular Weight	1190.9 g/mol (approx.)
Synonyms	Acid Black 194 (Tetrasodium Salt); C.I. 30336; Tetrasodium 5,5'-[iminobis[(6-hydroxy-3-sulphonato-2-naphthyl)azo(2,5-dimethoxy-4,1-phenylene)azo]]bis(salicylate); 5,5'-[Iminobis[(6-hydroxy-3-sulphonato-2-naphthyl)azo(2,5-dimethoxy-4,1-phenylene)azo]]disalicylic Acid Tetrasodium Salt; Azo Dye Intermediate 6548-31-8; Light Black NB; Sulphonated Azo Dye Intermediate
EINECS	Contact for details

Quality Control

Our production of Tetrasodium 5,5'-[Iminobis[(1-Hydroxy-3-Sulphonato-6,2-Naphthylene)Azo(2,5-Dimethoxy-4,1-Phenylene)Azo]]Bis(Salicylate) adheres to stringent quality management protocols. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and meet precise customer specifications. Certificates of Analysis (COA) detailing batch-specific results are provided and can be tailored to align with relevant industry standards.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and light-sensitive; therefore, containers must be kept tightly sealed after opening to minimize exposure to atmospheric moisture and light, which can affect product stability.

Specification

Item	Specification
Appearance	Dark Brown to Black Powder
Identification (IR)	Conforms to Reference Spectrum
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm
Water Solubility	Freely Soluble

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