E180 is a synthetic azo dye, reddish in colour used solely for colouring the rind of hard cheeses. When it E180 is used in this fashion it is a ingredient and will not appear as e-number e180 on the declaration.
Also check out these good links on nutrition
People who suffer from asthma, rhinitis or the skin disease urticaria may find their symptoms become worse following consumption of azo dyes.
E180 is banned in Australia.
