D&C Red 33 also known as Acid Red 33 or simply Red 33 is a red azo dye used as a colorant in mouthwashes, dentifrices, cosmetics, and hair dyes.[1] Red 33 is a disodium salt of 5-amino-4-hydroxy-3-(phenylazo)-2,7-naphthalenedisulfonic acid, which can be purified through high performance liquid chromatography.[2]

References

  1. ^ FD&C Red #33 in the Consumer Product Information Database
  2. ^ Bailey, John E (1984). "Purification of D&C Red. No. 33 by preparative high-performance liquid chromatography". Journal of Chromatography A. 314: 379–385. doi:10.1016/S0021-9673(01)97750-7. PMID 6526888.
Allikas: https://en.wikipedia.org/wiki/D%26C_Red_33
No tags for this post.