GrubFacts

colour

Caramel colour (Class III/IV)

Score
30

Ammonia-process caramel colours can carry 4-MEI, which California lists under Proposition 65.

Classes III and IV are made with ammonia compounds and can contain 4-methylimidazole as a by-product. California requires a Prop 65 warning above a threshold, which pushed several manufacturers to reformulate. Classes I and II do not have this issue but labels rarely say which class was used.

4 meisynthetic dye

Also appears on labels as

caramel color · caramel colour · e150c · e150d

What this is based on

Caramel colour (Class III/IV) — scored 30/100 · GrubFacts