What is E155?

Brown HT, also called Chocolate Brown HT, Food Brown 3, and C.I. 20285, is a brown synthetic coal tar diazo dye. E155 sits in the E100–E199 series, which in the EU classification mainly covers colours.

What is E155 used for?

E155 belongs to the colours group. Colours are added to give or restore colour to food. Some are natural, like curcumin from turmeric; some synthetic dyes are debated and require warning labels in the EU.

Is E155 safe?

E155 is rated “moderate”. It is approved for use in food, but some people prefer to limit it. “Moderate” means it is approved, but is debated or something some people prefer to limit.

How E155 appears on labels

On food packaging you'll find E155 either as the number “E155” or by the name “Brown HT” in the ingredient list, often after its function. Ingredients are listed in descending order by weight, so an additive near the end is present only in small amounts.

Is E155 vegan?

Yes, E155 is suitable for vegans.