Solvent Yellow 33

Solvent Yellow 33 (CAS 8003-22-3), also marketed as Quinoline Yellow and approved as D&C Yellow No. 10, is a synthetic quinoline-based colorant used to impart bright yellow hues. Its solubility profile makes it suitable for both solvent-based systems and certain regulated formulations across industrial and consumer product applications where high visibility is required.

In personal care and cosmetics, D&C Yellow No. 10 is an approved colorant for use in hair care products, soaps, and topical formulations where a stable, vibrant yellow is required for the brand. Textile and leather processors use this colorant to dye synthetic fibers and finish leather goods, where consistent batch-to-batch color performance is critical for industrial quality control.

In paper manufacturing, it is applied to achieve uniform yellow toning in specialty and decorative paper grades. Food-contact and packaging applications may also reference this specific colorant. Regulatory compliance with approved colorant lists is a procurement requirement for many manufacturers. Solvent Yellow 33 is typically supplied as a fine powder or granular solid for easy handling.

It is available in cosmetic-grade specifications aligned with D&C approval standards, as well as technical-grade material for industrial textile and paper use depending on the final application. Buyers should confirm grade and purity documentation against the relevant regional regulatory framework prior to sourcing. This ensures the material meets the necessary safety and performance criteria.