Description

2-[4-[[[1-(Hydroxymethyl)-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol]-4-Yl]Azo]Phenyl]-6-Methyl-7-Benzothiazolesulfonic Acid Sodium Salt is a high-purity, water-soluble azo dye intermediate of significant commercial importance. Its value lies in its role as a key precursor for synthesizing reactive and acid dyes, which are essential for achieving vibrant and wash-fast colors on textiles like cotton, wool, and nylon. This compound is primarily needed by manufacturers in the dye and pigment industry, as well as by research institutions developing advanced colorants for specialized applications.

Application

• Primary Intermediate for Reactive Dyes: Serves as a crucial building block in the synthesis of high-performance reactive dyes for cellulose fibers (cotton, viscose).
• Acid Dye Production: Used in the manufacture of acid dyes, which are applied to protein fibers such as wool, silk, and nylon.
• Specialty Pigment Synthesis: A key starting material for creating complex organic pigments used in inks, coatings, and plastics.
• Research & Development: Employed in academic and industrial R&D labs for developing novel chromophores and studying dye chemistry.
• Textile Colorant Formulation: Integral to producing specific shades of yellow, orange, and red hues in commercial dye formulations.
• Functional Dye Applications: Potential use in the development of functional dyes for non-textile uses, such as in sensors or imaging agents.

Basic Information

Product Name	2-[4-[[[1-(Hydroxymethyl)-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol]-4-Yl]Azo]Phenyl]-6-Methyl-7-Benzothiazolesulfonic Acid Sodium Salt
CAS No.	25983-65-7
Molecular Formula	C19H17N5O5S2Na
Molecular Weight	498.49 g/mol
Synonyms	Sodium 2-[4-[[1-(hydroxymethyl)-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-4-yl]azo]phenyl]-6-methyl-1,3-benzothiazole-7-sulfonate; C.I. Reactive Yellow 17 Intermediate; Azo Benzothiazole Dye Intermediate; 7-Benzothiazolesulfonic acid, 2-[4-[[1-(hydroxymethyl)-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-4-yl]azo]phenyl]-6-methyl-, sodium salt; Reactive Yellow 17 Precursor; 1,3-Benzothiazolium, 2-[4-[[1-(hydroxymethyl)-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-4-yl]azo]phenyl]-6-methyl-7-sulfo-, inner salt, sodium salt
EINECS	Contact for details

Quality Control

Our production of 2-[4-[[[1-(Hydroxymethyl)-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol]-4-Yl]Azo]Phenyl]-6-Methyl-7-Benzothiazolesulfonic Acid Sodium Salt adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure consistent performance as a dye intermediate. We provide comprehensive Certificates of Analysis (COA) upon request, detailing all relevant specifications to support your quality assurance and regulatory 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); keep the container tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Yellow to orange-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Residue on Ignition (Sulfated Ash)	≤ 2.0%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 3.0%
Solubility (1% in Water)	Clear, yellow solution

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