Brown fk

Brown FK (CAS 8062-14-4), also known as E154 and C.I. Food Brown 1, is a synthetic azo dye approved for use as a food colorant in select regulated markets.

It delivers a characteristic brown hue primarily used to color kippers and smoked fish products, where consistent batch-to-batch color performance is a key commercial requirement.

In the food industry, this colorant is applied directly to smoked and cured fish to achieve the deep golden-brown appearance consumers associate with traditional smoking methods.

Textile processors use it to dye natural fibers, particularly wool and silk, where its azo chemistry produces reliable uptake under standard industrial dyebath conditions.

Leather finishing operations incorporate it to achieve uniform brown tones on treated hides. Paper manufacturers apply it in specialty coloring processes for surface or pulp dyeing.

The product is typically supplied as a powder or granular solid. It is available in food-grade specification compliant with regulatory standards, as well as technical grades for industrial use.

Buyers should confirm regional regulatory approval status before purchase, as authorization for this specific additive varies significantly across different global markets.