E155 – Brown HT
ColouringDescription
Synthetic brown diazo dye
Risks
Hypersensitivity reactions, potential behavioral effects (hyperactivity)
Notes
Brown HT is a synthetic brown dye created in chemical laboratories using a process that builds diazo compounds - these are artificial molecular structures specifically designed to produce colour. The 'HT' stands for 'High Temperature,' referring to its stability when heated. It's manufactured entirely through chemical synthesis, not extracted from any natural sources. This additive works as a food colouring agent, giving products a rich chocolate-brown appearance. You'll most commonly find it in chocolate-flavoured desserts, cakes, biscuits, and ice cream where manufacturers want to enhance or standardize the brown colour. It's particularly useful in products where the natural brown colour might be too light or inconsistent. Brown HT is completely synthetic and suitable for both vegetarian and vegan diets since it contains no animal-derived ingredients. It's approved for use in the EU and many other countries, though some people prefer to avoid synthetic dyes in general. Like other artificial colours, it must be clearly listed on ingredient labels, making it easy to identify if you're trying to avoid synthetic additives.