E131 is a food additive approved by the European Union
It is used as a synthetic colouring agent in food and drink products.
The common name for E131 is Patent Blue V.
E131 is highly soluble in water and gives a blue colouring.
Some allergic reactions have been reported in conjunction with the intake
of E131. Other side effects have included low blood
pressure, nausea and skin irritation. This colouring is banned in the
US, Norway and Australia.
Examples of food/drink products that may include E131:
Scotch eggs and sweets.