D&C Red 33

D&C Red 33: D&C Red 33

IUPAC name

Disodium 5-amino-4-hydroxy-3-(phenylazo)-naphthalene-2,7-disulfonate

Other names

D&C Red 33, Acid Red 33, Azo grenadine, Azo fuchsine, Acid fuchsine D, Redusol Z, Azo magenta G, Certicol Red B, Fast acid magenta, Hexalan Red B, Acetyl Red B, Naphthalene Red B, C.I. 17200

Identifiers

CAS number 3567-66-6

PubChem 9570136

Jmol-3D images Image 1

SMILES

OC1=C(C(N)=CC(S([O-])(=O)=O)=C3)C3=CC(S([O-])(=O)=O)=C1\N=N\C2=CC=CC=C2.[Na+].[Na+]

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

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

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Academic Dictionaries and Encyclopedias

D&C Red 33

IUPAC name Disodium 5-amino-4-hydroxy-3-(phenylazo)-naphthalene-2,7-disulfonate
Other names D&C Red 33, Acid Red 33, Azo grenadine, Azo fuchsine, Acid fuchsine D, Redusol Z, Azo magenta G, Certicol Red B, Fast acid magenta, Hexalan Red B, Acetyl Red B, Naphthalene Red B, C.I. 17200
Identifiers
CAS number	3567-66-6
PubChem	9570136
Jmol-3D images	Image 1
SMILES OC1=C(C(N)=CC(S([O-])(=O)=O)=C3)C3=CC(S([O-])(=O)=O)=C1\N=N\C2=CC=CC=C2.[Na+].[Na+]
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