4-chloro-2-nitroaniline

4-Chloro-2-nitroaniline (CAS 89-63-4), also known as p-Chloro-o-nitroaniline, is an aromatic amine intermediate used primarily in the synthesis of azo dyes and pigments.

It functions as a diazonium coupling precursor, enabling the production of colorants with specific hue and fastness characteristics demanded by dye manufacturers across the global chemical industry.

In textile dyeing, it serves as a key intermediate for manufacturing azo dyes applied to cotton, wool, and synthetic fibers, where precise shade reproducibility is critical for high-quality production.

Printing ink formulators use derived pigments to achieve stable, high-opacity colors in packaging inks for flexible films and corrugated substrates, ensuring durability and visual appeal in commercial applications.

Leather finishing operations incorporate azo colorants built from this intermediate to produce surface dyes with adequate rub and light fastness, meeting the rigorous standards of the leather goods sector.

It also contributes to the synthesis of specialty pigments used in paper coloring, where consistent batch-to-batch color strength determines commercial acceptance and long-term performance in the field.

4-Chloro-2-nitroaniline is supplied as a yellow to orange crystalline powder. Technical grade is the standard commercial offering, with purity levels typically specified at 98% or higher by GC or HPLC.

Bulk quantities are available in fiber drums or multi-wall bags, with smaller packaging options for laboratory and formulation development use to support diverse industrial and research requirements.