Homonym: E166 (Colorant)
E166, also known as "Iron Oxide," is a food coloring agent derived from natural sources. It is commonly used to add color to various food products, including candies, baked goods, and beverages. E166 can provide shades ranging from red to brown, depending on the specific type of iron oxide used.
This additive is considered safe for consumption and is approved by food safety authorities in many countries. It is often favored for its stability and resistance to fading, making it a popular choice in the food industry. E166 is part of a broader category of color additives, which includes other substances like E100 (Curcumin) and E120 (Carmine).