Fast Green FCF (E143)

Type of additive
(Glossary)		Colorants
E NumberE143
Chemical FormulaC37H34N2Na2O10S3
Also Known AsFD&C Green No. 3
C.I. 4205

Purpose and Function

Fast Green FCF (E143) is a synthetic green dye used in the food industry and other applications to provide a bright green color. It is commonly used in:

  • Confectionery: Sweets, candies, and jellies often contain Fast Green FCF for vibrant green coloring.
  • Beverages: Used in soft drinks, syrups, and flavored beverages.
  • Dairy products: Sometimes added to yogurts, ice creams, and other dairy desserts to enhance their green hue.
  • Processed foods: Found in processed snacks, desserts, sauces, and canned vegetables to improve visual appeal.

In addition to food products, E143 is also used in pharmaceuticals, cosmetics, and personal care products.

Potential Risks and Side Effects

Fast Green FCF (E143) is considered safe when consumed within regulated limits, but there are a few potential risks and concerns:

  • Allergic reactions: As with many synthetic dyes, Fast Green FCF can cause allergic reactions in some individuals, particularly those sensitive to artificial colorants. Symptoms may include skin rashes, hives, or breathing difficulties.
  • Hyperactivity in children: There have been concerns about synthetic food dyes like Fast Green FCF contributing to hyperactivity in children, though the evidence remains inconclusive.
  • Regulatory approval: Fast Green FCF is approved for use in the European Union, the United States, and many other countries. However, its usage is closely regulated to ensure safety and is subject to maximum allowable concentrations in food products.