D&C Red 33

D&C Red 33
D&C Red 33
Identifiers
CAS number 3567-66-6
PubChem 9570136
Jmol-3D images Image 1
Properties
Molecular formula C16H11N3Na2O7S2
Molar mass 467.38 g mol−1
Appearance Dark reddish brown powder
Melting point

decomposes below the melting point

Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

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-(phenolazo)-2,7-naphthalenedisulfonic acid.

References

  1. ^ D&C Red #33 (CI 17200) at Household Products Database