Hydroxypropyl methylcellulose is used as a thickener, emulsifier and foaming agent. It dissolves easily in water, thickens liquids and forms a jelly when heated. It is also a binder and filler in sauces. It makes ice creams cream creamier. Its excess consumption can cause intestinal discomfort such as diarrhea. A debate has taken place between industry and the European Food Safety Authority (Efsa) about the levels of PCH (propylene chlorohydrin) impurities present in this additive. PCH is a suspected mutagenic residue. The Efsa has refused the industry's request that this authorized residual level be revised upwards.
Very many categories of food, except in particular infant food.