Fast Yellow AB (E105)

Type of additive
(Glossary)		Colorants
E NumberE105
Chemical FormulaC12H11N3O6S2
Also Known AsC.I. Food Yellow 2

Purpose and Function

Fast Yellow AB (E105) is a synthetic yellow azo dye that was historically used in food products to impart a yellow color. Its applications included:

  • Colorant: It was used to provide a bright yellow color in various foods, such as candies, beverages, and processed snacks.

However, due to concerns over its safety, Fast Yellow AB is now banned as a food additive in many countries, including the European Union and the United States.

Potential Risks and Side Effects

Fast Yellow AB (E105) was banned due to significant health concerns. Key risks associated with its use include:

  • Toxicity concerns: Studies linked the consumption of Fast Yellow AB to toxicity, including harmful effects on organs and potential carcinogenicity.
  • Allergic reactions: Synthetic azo dyes, including Fast Yellow AB, are known to cause allergic reactions, especially in individuals sensitive to food dyes. These reactions can include skin rashes, itching, and more severe symptoms like asthma.
  • Carcinogenicity: Fast Yellow AB was found to have potential carcinogenic properties, leading to its ban in food products.

Due to these safety concerns, Fast Yellow AB is no longer approved for use in food products in most regions.