What is E142?

Green S is a green synthetic coal tar triarylmethane dye with the molecular formula C27H25N2O7S2Na. E142 sits in the E100–E199 series, which in the EU classification mainly covers colours.

What is E142 used for?

E142 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 E142 safe?

E142 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 E142 appears on labels

On food packaging you'll find E142 either as the number “E142” or by the name “Green S” 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 E142 vegan?

Yes, E142 is suitable for vegans.