Description

Trisodium 5-(Acetylamino)-4-Hydroxy-3-[[4-[[[3-[[2-(Sulphonatooxy)Ethyl]Sulphonyl]Phenyl]Amino]Carbonyl]Phenyl]Azo]Naphthalene-2,7-Disulphonate is a high-purity, water-soluble anionic dye intermediate characterized by its complex poly-sulfonated structure. This compound is essential for synthesizing high-value reactive and acid dyes, providing excellent color fastness and brightness in demanding applications. It is primarily utilized by manufacturers in the textile, leather, and specialty ink industries seeking to produce vibrant and durable colorants.

Application

• Key Intermediate for Reactive Dyes: Primary use in the synthesis of high-performance reactive dyes for cotton, wool, and nylon fibers.
• Acid Dye Production: Serves as a crucial building block for manufacturing acid dyes used in silk, wool, and polyamide coloring.
• Leather Dyeing: Used in formulating dyes for high-quality leather finishing with superior penetration and color uniformity.
• Inkjet Ink Formulations: A component in the production of specialty inks for digital textile printing, offering a wide color gamut.
• Paper Coloring: Employed in the manufacture of dyes for high-grade paper and specialty packaging.
• Biological Staining: Potential use as a precursor for histological stains and indicators in analytical chemistry.

Basic Information

Product Name	Trisodium 5-(Acetylamino)-4-Hydroxy-3-[[4-[[[3-[[2-(Sulphonatooxy)Ethyl]Sulphonyl]Phenyl]Amino]Carbonyl]Phenyl]Azo]Naphthalene-2,7-Disulphonate
CAS No.	80419-51-8
Molecular Formula	C31H23N5Na3O17S4
Molecular Weight	959.78 g/mol
Synonyms	5-(Acetylamino)-4-hydroxy-3-((4-((3-((2-sulfooxyethyl)sulfonyl)phenyl)carbamoyl)phenyl)azo)naphthalene-2,7-disulfonic acid trisodium salt; Reactive Dye Intermediate; CI Reactive Red 250 (related); Trisodium 1-amino-4-[[4-[[3-[[2-(sulfonatooxy)ethyl]sulfonyl]phenyl]carbamoyl]phenyl]azo]-9,10-dihydro-9,10-dioxo-5,8-disulfonatoanthracene-2-acetamide (alternative naming); Azo dye intermediate, sulfonated; Tetrasulfonated azo dye precursor.
EINECS	Contact for details

Quality Control

Every batch of this dye intermediate is produced under a strict quality management system. We employ advanced analytical techniques including HPLC, UV-Vis spectroscopy, and titration methods to ensure chemical identity, purity, and consistency. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical specifications is provided with each shipment to guarantee it meets your precise formulation 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 nature, the container must be kept tightly sealed after opening to prevent moisture absorption, which can affect stability and handling properties. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Dark brown to reddish-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture Content (KF)	≤ 5.0%
Sulfated Ash	≤ 20.0%
Water Solubility	Freely soluble
Heavy Metals (as Pb)	≤ 20 ppm

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