Pigment red 273

Pigment Red 273 (CAS 68583-95-9), also sold as Red 40 Lake and Food Red 17:1, is a high-performance azo lake pigment derived from the aluminum precipitation of Allura Red AC.

Where is Pigment red 273 used?

• Plastics and polymer compounding: consistent red hues in rigid and flexible formulations
• Packaging inks: sharp color strength and substrate adhesion in solvent-based and aqueous systems
• Textile and leather finishing: uniform red tones on non-dyeable synthetic substrates via surface coatings and pigment printing pastes
• Construction materials: colors cement-based products, coatings, and architectural finishes

Good to know: Bleed resistance is a critical specification. Weather resistance and alkali stability determine pigment selection for demanding outdoor and structural applications.

Commercial specifications

• Standard grades differentiated by oil absorption, particle size distribution, and tinting strength