Description

5-(Acetamido)-4-Hydroxy-3-[[8-[[2-(Sulphooxy)Ethyl]Sulphonyl]-2-Naphthyl]Azo]Naphthalene-2,7-Disulphonic Acid, Sodium Salt is a high-purity, water-soluble azo dye intermediate of significant industrial importance. Its complex polyfunctional structure, featuring multiple sulphonic acid groups, makes it a key precursor for synthesizing reactive and acid dyes with excellent wash-fastness and brightness. This compound is essential for manufacturers in the textile, leather, and specialty ink industries seeking to produce vivid, durable colorants. Consistent quality and reliable supply of this intermediate are critical for downstream production efficiency and final product performance.

Application

• Primary Intermediate for Reactive Dyes: Synthesis of high-quality reactive dyes for cotton, viscose, and other cellulosic fibers.
• Manufacture of Acid Dyes: Production of acid dyes used for coloring wool, silk, and nylon.
• Leather Dyeing: Key component in formulations for dyeing leather goods.
• Specialty Ink Production: Used in the manufacture of inks for jet printing and other specialized applications.
• Research & Development: Serves as a building block for novel dye and pigment molecules in R&D laboratories.
• Paper Coloring: Potential use in the production of dyes for high-grade paper products.

Basic Information

Item	Detail
Product Name	5-(Acetamido)-4-Hydroxy-3-[[8-[[2-(Sulphooxy)Ethyl]Sulphonyl]-2-Naphthyl]Azo]Naphthalene-2,7-Disulphonic Acid, Sodium Salt
CAS No.	85567-18-6
Molecular Formula	C30H23N4Na3O14S4
Molecular Weight	884.75 g/mol (approx.)
Synonyms	Reactive Blue 222; C.I. Reactive Blue 222; Sodium 5-acetamido-4-hydroxy-3-[(8-[(2-sulfooxyethyl)sulfonyl]-2-naphthyl)azo]naphthalene-2,7-disulfonate; 5-Acetamido-4-hydroxy-3-((8-((2-sulfooxyethyl)sulfonyl)-2-naphthalenyl)azo)-2,7-naphthalenedisulfonic acid trisodium salt; C.I. 681149; Reactive Blue H-EGN; Dye Intermediate 85567-18-6
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to strict quality management systems to ensure batch-to-batch consistency and purity. Every lot undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to meet exacting customer specifications. A detailed Certificate of Analysis (COA) documenting assay, impurity profile, and physical properties is provided with each shipment. We are committed to supporting our global customers with products that comply with relevant industry and supply chain standards.

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 opening to prevent absorption of atmospheric moisture, which can affect product quality and handling properties.

Specification

Item	Specification
Appearance	Dark blue to black powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content	≤ 5.0%
Solubility (in Water)	Clear solution
Heavy Metals (as Pb)	≤ 20 ppm

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