Description

4,4'-(Carbonylbis(Imino-3,1-(4-Methyl-Phenylene)Carbonylimino))Bis(Naphthalene-2,6-Disulfonicacid)Tetrasodiumsalt is a high-purity, water-soluble organic salt characterized by its complex aromatic structure and multiple sulfonate groups. This compound is valued for its strong chelating and dispersing properties, making it a critical functional additive in advanced industrial processes. It is primarily sought after by manufacturers in the textile, paper, and specialty chemical industries for applications requiring precise control over metal ions and particle suspension.

Application

• Textile Dyeing & Printing: Acts as a high-efficiency dispersing agent and chelating agent for metal ions in dye baths, improving color uniformity and fastness.
• Paper Manufacturing: Used as a retention aid and dispersant in pulp processing to enhance paper quality and production efficiency.
• Water Treatment Formulations: Serves as a key component in scale and corrosion inhibitor blends for industrial cooling and boiler water systems.
• Construction Chemicals: Functions as a superplasticizer and dispersant in high-performance concrete admixtures to improve workability and reduce water content.
• Detergent & Cleaning Products: Incorporated into industrial and institutional cleaning formulas for its superior sequestering power against calcium and magnesium ions.
• Oilfield Chemicals: Employed as a scale inhibitor in drilling and production fluids to prevent mineral deposition in wells and equipment.
• Ceramic & Pigment Dispersion: Enhances the stability and rheology of suspensions in the production of ceramics, paints, and inks.
• Research & Development: Used as a specialized intermediate or standard in chemical synthesis and analytical method development.

Basic Information

Product Name	4,4'-(Carbonylbis(Imino-3,1-(4-Methyl-Phenylene)Carbonylimino))Bis(Naphthalene-2,6-Disulfonicacid)Tetrasodiumsalt
CAS No.	202982-98-7
Molecular Formula	C39H28N4Na4O16S4
Molecular Weight	1030.8 g/mol (approx.)
Synonyms	Direct Brown 1:2 Metal Complex Dye Intermediate; Tetrasodium 4,4'-Carbonylbis[imino[3-[(4-methylphenyl)amino]carbonyl]imino]bis(naphthalene-2,6-disulfonate); C.I. 30045; Acid Brown 425; 4,4'-[Carbonylbis[imino(3-[(4-methylphenyl)carbamoyl]imino)]]bis(1,3-naphthalenedisulfonic acid) tetrasodium salt; Benzenesulfonic acid, 4,4'-[carbonylbis[imino[3-[(4-methylphenyl)amino]carbonyl]imino]]bis[5-hydroxy-, tetrasodium salt (related isomer).
EINECS	Contact for details

Quality Control

Our production of 4,4'-(Carbonylbis(Imino-3,1-(4-Methyl-Phenylene)Carbonylimino))Bis(Naphthalene-2,6-Disulfonicacid)Tetrasodiumsalt adheres to a stringent quality management system. Every batch undergoes comprehensive analytical testing, including HPLC for purity, titration for assay, and spectroscopic identification, to ensure consistent performance and specification compliance. Certificates of Analysis (COA) documenting all critical parameters are available upon request.

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 each use to prevent absorption of atmospheric moisture, which can lead to caking or degradation.

Specification

Item	Specification
Appearance	Yellowish to brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	25.0 - 35.0%
Heavy Metals (as Pb)	≤ 20 ppm
pH (1% Solution)	7.0 - 9.0
Solubility in Water	Clear, complete solution

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