Aniline

Aniline (CAS 62-53-3), also known historically as Kyanol, is a primary aromatic amine; a foundational building block in dye manufacturing, polymer chemistry and rubber processing.

Where is Aniline used?

• Polyurethane: reacts with formaldehyde to form MDA, precursor to MDI for rigid foam and elastomer manufacturing
• Textile and leather: aniline-derived dyes and azo pigments for deep, stable coloration on synthetic and natural fibers
• Rubber: aniline-based antioxidants and accelerators extend service life in tires and industrial belts for heavy machinery
• Flame retardants: aniline derivatives are incorporated into polymer matrices for wire, cable and construction applications requiring fire performance compliance.

Good to know: Its reactivity toward electrophiles and isocyanates makes it a critical intermediate in producing finished industrial materials rather than an end product in itself. Pharmaceutical-grade material is also available where aniline is required as a specified impurity reference standard for laboratory testing.

Commercial specifications

• Purity levels generally at 99% or higher for standard industrial use
• Clear to pale yellow liquid in bulk quantities, typically in drums, IBCs and ISO tank containers