3-hydroxy-2-naphthoic acid

3-Hydroxy-2-naphthoic acid (CAS 92-70-6), also known as BON acid or BONA, is a naphthalene-derived organic acid used primarily as a coupling component and intermediate.

Where is 3-hydroxy-2-naphthoic acid used?

• Azo pigments and dyes: coupling component and intermediate
• Pigment manufacturing: BONA reacts with diazonium salts to produce BON arylamide pigments, including Pigment Red 48 and related lake pigments for packaging inks and plastics
• Coatings: heat stability and color strength
• Textile and leather: azo dyes for dyeing synthetic and natural fibers
• Pharmaceutical synthesis: intermediate in the preparation of active compounds
• Specialty chemicals: hydroxylated naphthoic acid scaffold
• Personal care formulators source it for UV-stabilizing additive development in select cosmetic applications.

Good to know: Consistent shade reproducibility across batch production is a key requirement for textile and leather dyeing.

Commercial specifications

• Purity typically 98% to 99%+ by HPLC
• Technical and pharmaceutical-grade material with high purity specifications
• Packaging in kilogram quantities through to bulk industrial supply