Description

4-Amino-5-Hydroxy-6-[(3-Nitrophenyl)Azo]-3-[[4-[[2-(Sulfooxy)Ethyl]Sulfonyl]Phenyl]Azo]-2,7-Naphthalenedisulfonic Acid Trisodium Salt is a high-purity, water-soluble azo dye intermediate of significant commercial importance. This compound is valued for its ability to impart specific color properties and functional characteristics in advanced dye and pigment synthesis. It is primarily required by manufacturers in the textile, ink, and specialty chemical industries for producing high-performance colorants.

Application

• Primary Intermediate for Reactive Dyes: A key building block in the synthesis of high-quality reactive dyes for cotton and other cellulosic fibers.
• Specialty Pigment Manufacturing: Used in the production of complex organic pigments for inks, coatings, and plastics requiring specific hue and stability.
• Textile Dyeing and Printing: Serves as a crucial component in formulations for textile dyeing and printing processes, offering good wash and light fastness.
• Functional Dye Synthesis: Employed in research and production of functional dyes for non-textile applications, such as in optical materials or sensors.
• Laboratory Research & Development: Used as a standard or starting material in R&D for developing new chromophores and colorant technologies.

Basic Information

Product Name	4-Amino-5-Hydroxy-6-[(3-Nitrophenyl)Azo]-3-[[4-[[2-(Sulfooxy)Ethyl]Sulfonyl]Phenyl]Azo]-2,7-Naphthalenedisulfonic Acid Trisodium Salt
CAS No.	71889-13-9
Molecular Formula	C24H18N6Na3O16S4
Molecular Weight	892.66 g/mol (approx.)
Synonyms	Trisodium 4-amino-5-hydroxy-6-[(3-nitrophenyl)diazenyl]-3-[[4-[(2-sulfooxyethyl)sulfonyl]phenyl]diazenyl]naphthalene-2,7-disulfonate; Reactive Dye Intermediate 71889-13-9; Azo Dye Intermediate (Nitrophenyl/Sulfooxyethylsulfonyl); C.I. Reactive Orange 107 intermediate; 3-Nitro-4-[[6-(or 7-)sulfo-2-[(4-[(2-sulfooxyethyl)sulfonyl]phenyl]azo]-5-hydroxy-1-naphthyl]azo]benzenesulfonic acid trisodium salt; 71889-13-9 (CAS); Trisodium 6-[(3-nitrophenyl)azo]-5-hydroxy-4-[[4-[(2-sulfooxyethyl)sulfonyl]phenyl]azo]-3-naphthalenedisulfonate
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to strict quality management systems. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure consistent performance and batch-to-batch reliability. A detailed Certificate of Analysis (COA) specifying purity, impurity profile, and physical parameters is provided with each shipment.

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); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product quality.

Specification

Item	Specification
Appearance	Dark brown to reddish-brown powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
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.