Ni gani huwekwa die ya red?
You talking about this?
Sudan dyes are synthetic chemical
dyes of similar chemical structure. They are aromatic compounds containing azo group ( - N=N - ).
Sudan I, II, III and IV are kinds of the
Sudan red
dyes. They can be generally applied for colouring substances such as hydrocarbon solvents, oils, fats, waxes and plastics.
.
There is also this
Background
Palm oil is one of the most useful vegetable available. Sudan IV dye is used as hue enhancer in palm oil despite the ban as food colorant due to its carcinogenicity and mutagenicity by the International Agency for Research on Cancer (IARC).