Description

Benzenesulfonic Acid, 4-Amino-, Diazotized, Coupled With Formaldehyde-Resorcinol Condensate, Reaction Products With Nitrous Acid is a specialized azo dye intermediate and colorant precursor. This complex compound is valued for its ability to impart specific color properties and functional characteristics in demanding industrial applications. It is primarily utilized by manufacturers in the dye and pigment, textile, and specialty polymer industries seeking high-performance colorants.

Application

• Primary Intermediate for Azo Dyes and Pigments: Serves as a key building block in the synthesis of high-performance, complex azo colorants.
• Textile Dyeing and Printing: Used in formulations for coloring natural and synthetic fibers, offering good fastness properties.
• Specialty Inks and Toners: Imparts specific color shades and stability in industrial inkjet, printing, and electrophotographic toner applications.
• Functional Polymer Additive: Can be incorporated into polymers to provide color or act as a functional monomer in condensation reactions.
• Research & Development: Employed in chemical research for developing novel chromophores and studying azo coupling reactions.
• Leather and Paper Coloring: Applied in the dyeing processes for leather goods and specialty papers.

Basic Information

Product Name	Benzenesulfonic Acid, 4-Amino-, Diazotized, Coupled With Formaldehyde-Resorcinol Condensate, Reaction Products With Nitrous Acid
CAS No.	90218-18-1
Molecular Formula	Complex Mixture / Contact for details
Molecular Weight	Contact for details
Synonyms	4-Aminobenzenesulfonic acid, diazotized, coupled with formaldehyde-resorcinol condensate, reaction products with nitrous acid; Azo dye intermediate based on 4-aminobenzenesulfonic acid and resorcinol-formaldehyde; Reaction products of diazotized sulfanilic acid with resorcinol-formaldehyde condensate; Sulfanilic acid azo dye intermediate; C.I. Azoic Coupling Component variant; Diazonium salt derivative of 4-aminobenzenesulfonic acid coupled with resorcinol-formaldehyde resin
EINECS	Contact for details

Quality Control

Our production of this advanced intermediate adheres to strict quality management protocols to ensure batch-to-batch consistency and performance reliability. Quality is verified through analytical methods including chromatography and spectrophotometry. A Certificate of Analysis (COA) detailing key parameters such as color strength, solubility, and impurity profile is provided with each shipment to support your quality assurance processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from heat, sparks, and open flame. Isolate from incompatible materials such as strong oxidizing agents and strong bases.

Specification

Item	Specification
Appearance	Colored Powder or Solid
Identification (IR)	Conforms to structure
Assay (Active Component)	Contact for details
Solubility	Partially soluble in water; soluble in alkaline aqueous solutions
Moisture Content	< 5.0% (Karl Fischer)
Ash Content	< 2.0%
Heavy Metals (as Pb)	< 20 ppm

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