Multiple choice

Which of the following substances is used for food colouring?

  1. Phenol red

  2. Pararosaniline

  3. New fuchsine

  4. Patent Blue V
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Patent Blue V, also called Food Blue 5 or Sulphan Blue, is a dark bluish synthetic dye used as a food colouring. As a food additive, it has E number E131. It is a sodium or calcium salt of diethylammonium hydroxide inner salt. It has the appearance of a violet powder.

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