Description

Sodium 2-[[4-[3-(4-Chlorophenyl)-4,5-Dihydro-1H-Pyrazol-1-Yl]Phenyl]Sulphonyl]Ethanesulphonate is a specialized anionic surfactant and dye intermediate with a unique molecular structure combining pyrazoline and sulfonate functionalities. This compound is valued for its ability to impart excellent wetting, dispersing, and leveling properties in complex formulations. It is primarily utilized by manufacturers in the textile, dye, and specialty chemical industries seeking high-performance additives for demanding processes.

Application

• Textile Dyeing & Printing: Acts as a high-efficiency leveling and dispersing agent for acid, reactive, and disperse dyes, ensuring uniform color uptake and reduced spotting.
• Synthetic Fiber Production: Used as a spin finish additive and antistatic agent to improve fiber processing and handleability.
• Dye Intermediate Synthesis: Serves as a key building block in the synthesis of more complex azo and pyrazolone-based dyes and pigments.
• Enhanced Oil Recovery (EOR): Investigated for use as a specialty surfactant in chemical flooding formulations to alter interfacial tension.
• Paper & Pulp Processing: Functions as a dispersant for pigments and fillers to improve sheet formation and quality.
• Industrial & Institutional Cleaners: Provides superior wetting and soil suspension properties in heavy-duty cleaning formulations.

Basic Information

Product Name	Sodium 2-[[4-[3-(4-Chlorophenyl)-4,5-Dihydro-1H-Pyrazol-1-Yl]Phenyl]Sulphonyl]Ethanesulphonate
CAS No.	27441-70-9
Molecular Formula	C17H16ClN2NaO5S2
Molecular Weight	450.89 g/mol
Synonyms	1-(4-((2-Sulfoethyl)sulfonyl)phenyl)-3-(4-chlorophenyl)-4,5-dihydro-1H-pyrazole-5-sulfonic acid sodium salt; Sodium 1-(4-(2-sulfoethylsulfonyl)phenyl)-3-(4-chlorophenyl)-2-pyrazoline-5-sulfonate; 2-[4-[3-(4-Chlorophenyl)-4,5-dihydro-1H-pyrazol-1-yl]phenyl]sulfonyl]ethanesulfonic acid sodium salt; Pyrazolone sulfonate surfactant; C.I. Disperse Yellow 201 intermediate; Leveling agent S; Dispersant 27441-70-9
EINECS	Contact for details

Quality Control

Our production of Sodium 2-[[4-[3-(4-Chlorophenyl)-4,5-Dihydro-1H-Pyrazol-1-Yl]Phenyl]Sulphonyl]Ethanesulphonate adheres to a strict quality management system. Every batch undergoes rigorous analytical testing to ensure consistent purity, chemical identity, and performance characteristics. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical specifications is provided with each shipment to support your quality assurance protocols.

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). This product is hygroscopic (moisture-sensitive). Keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture, which may affect product quality and handling properties.

Specification

Item	Specification
Appearance	Light yellow to beige powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	18.0 - 22.0%
Heavy Metals (as Pb)	≤ 20 ppm
Chloride Content	7.5 - 8.5%
pH (1% Solution)	6.0 - 8.0

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