Multiple choice

Which of the following acts as a photosensitizer?

  1. Xylenol orange

  2. Xylene cyanol

  3. Victoria Blue BO

  4. Water blue

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Victoria Blue BO, also known as C.I. Basic Blue 7 and C.I. 42595, is a chloride salt of a synthetic blue triarylmethane dye. Its chemical formula is C33H40N3Cl. It has the appearance of a reddish blue powder. It is a photosensitizer.