Description

1-Naphthalenesulfonic Acid, 5-2-Amino-4-4-2-(4-Nitro-2-Sulfophenyl)Ethenyl-3-Sulfophenyl-Onn-Azoxyphenylazo-, Trisodium Salt is a high-purity, water-soluble azo dye intermediate and functional chemical. This compound is valued for its precise molecular structure, which provides excellent chromophoric properties and reactivity for synthesizing specialized dyes and pigments. It is primarily required by manufacturers in the textile, ink, and specialty chemical industries for producing vivid, colorfast products.

Application

• Primary Intermediate for Azo Dyes: A key building block in the synthesis of high-performance acid dyes and direct dyes for textiles like wool, silk, and nylon.
• Specialty Ink Formulation: Used in the production of inks for jet printing, packaging, and security applications requiring specific color properties.
• Functional Pigment Synthesis: Employed in creating complex organic pigments with enhanced lightfastness and thermal stability for plastics and coatings.
• Research & Development: Serves as a critical reagent in chemical research for developing new chromophores and studying dye-sensitized systems.
• Analytical Chemistry: Can be utilized as a staining agent or a colorimetric indicator in specific laboratory analyses.

Basic Information

Item	Detail
Product Name	1-Naphthalenesulfonic Acid, 5-2-Amino-4-4-2-(4-Nitro-2-Sulfophenyl)Ethenyl-3-Sulfophenyl-Onn-Azoxyphenylazo-, Trisodium Salt
CAS No.	89923-61-5
Molecular Formula	C34H21N5Na3O14S4
Molecular Weight	968.78 g/mol
Synonyms	Trisodium 5-[2-Amino-4-[4-[2-(4-nitro-2-sulfonatophenyl)ethenyl]-3-sulfonatophenyl]diazenyl]-4-hydroxy-3-phenylazo-2,7-naphthalenedisulfonate; C.I. Acid Yellow 219; Azo dye intermediate 89923-61-5; 5-(2-Amino-4-{4-[2-(4-nitro-2-sulfophenyl)vinyl]-3-sulfophenyl}diazenyl)-4-hydroxy-3-(phenylazo)naphthalene-2,7-disulfonic acid trisodium salt; Light Yellow 2G (related shade); Acid Yellow 219 sodium 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 tested against rigorous in-house specifications, which typically include identification, assay, impurity profile, and solubility checks. A Certificate of Analysis (COA) detailing all test results is provided with each shipment to guarantee compliance with your technical requirements.

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 (moisture-sensitive) nature, the container must be kept sealed when not in use to prevent absorption of atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	Yellow to orange-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Water Solubility	Freely soluble
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 3.0%

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