Tartrazine

Tartrazine (CAS 1934-21-0), also known as E102, Yellow 5, and Acid Yellow 23, is a synthetic lemon-yellow azo dye used to impart color across food, pharmaceutical, and industrial applications.

It delivers consistent, bright yellow hues with strong tinctorial strength, making it a go-to colorant where reliable batch-to-batch color matching is required for various manufacturing processes.

In food and beverage manufacturing, it colors products such as soft drinks, confectionery, snack coatings, and instant desserts to achieve yellow and green shades when blended with other dyes.

Pharmaceutical manufacturers use it to color tablet coatings, capsule shells, and oral liquid formulations for product differentiation and brand identification across diverse medical product lines.

Personal care and cosmetic formulators incorporate it into shampoos, bath products, and soaps where a stable, water-soluble yellow colorant is needed for consistent aesthetic appeal.

In textile and paper dyeing, it is applied to achieve uniform yellow shades on cellulose substrates and in paper pulp coloring processes for high-quality industrial output.

The material is supplied as a fine orange-yellow powder, typically as the sodium salt form. Food-grade material is available to FCC and E102 specifications for global compliance.

Aluminum lake versions are offered for oil-dispersible applications. Pharmaceutical-grade supply conforming to USP and BP standards is also commercially available for specialized use.