Description

Benzoic acid, 2-hydroxy-, coupled with 4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid, diazotized 2,2'-(1,2-ethenediyl)bis[5-aminobenzenesulfonic acid] and diazotized 4-nitrobenzenamine, disodium salt is a complex, high-purity synthetic dye intermediate and specialty chemical. This compound is valued for its precise chromophoric structure, which provides consistent and reliable color properties for demanding industrial applications. It is primarily utilized by manufacturers in the textile, ink, and specialty coatings industries who require a high-performance azo dye component.

Application

• Textile Dyeing: A key intermediate for the synthesis of high-grade azo dyes used in coloring natural and synthetic fibers.
• Ink Formulation: Employed in the production of specialized printing inks, including those for packaging and security printing.
• Pigment Manufacturing: Serves as a precursor for creating organic pigments used in paints, plastics, and coatings.
• Leather Coloring: Used in the formulation of dyes for the uniform and durable coloring of leather goods.
• Paper Coloring: Applied in the manufacture of dyes for high-quality paper products and specialty papers.
• Research & Development: Serves as a reference standard and building block in chemical research for novel chromophores and functional materials.

Basic Information

Product Name	Benzoic acid, 2-hydroxy-, coupled with 4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid, diazotized 2,2'-(1,2-ethenediyl)bis[5-aminobenzenesulfonic acid] and diazotized 4-nitrobenzenamine, disodium salt
CAS No.	94891-34-6
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Disodium 5-[(4-aminophenyl)azo]-2-hydroxybenzoate coupled diazotized 4-nitroaniline and diazotized 4,4'-diaminostilbene-2,2'-disulfonate; C.I. Acid Yellow 219; Azo dye intermediate 94891-34-6; 4-Aminoazobenzene-2'-carboxylic acid, 2-hydroxy-, disodium salt, coupled derivative; 5-[(4-Aminophenyl)azo]-2-hydroxybenzoic acid, disodium salt, coupled component; Acid Yellow 219 (component); Stilbene azo dye intermediate; Textile dye intermediate 94891-34-6
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to stringent quality control protocols to ensure batch-to-batch consistency and purity for industrial synthesis. Quality is verified through advanced analytical techniques including HPLC and spectrophotometry. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment to support your quality assurance and regulatory compliance needs.

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) and light-sensitive; containers must be kept tightly sealed to prevent absorption of moisture from the atmosphere.

Specification

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

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