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CARMINIC ACID AR

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CARMINIC ACID AR
Molecular structure
Chemical Product

CARMINIC ACID AR

Cat. NoKC.310099 CategoryDyes & Indicators Molecular FormulaC22H20O13 CAS1260-17-9 Molecular Weight492.4 g/mol
Pack sizes 1gm5gm

Carminic acid appears as dark purplish-brown mass or bright red or dark red powder. Darkens at 248 °F. Deep red color in water. Yellow to violet in acidic aqueous solutions. (NTP, 1992)

  • Photographic Processing [Category: Other]
  • Painting [Category: Hobbies]
  • Free acid in color photography; pigment for artists' paints; as bacteriological stain; reagent for aluminum; rarely now as acid-base indicator or oxidimetric indicator; complexing agent for cations
  • Colorant used in cosmetics
Physical DescriptionCarminic acid appears as dark purplish-brown mass or bright red or dark red powder. Darkens at 248 °F. Deep red color in water. Yellow to violet in acidic aqueous solutions. (NTP, 1992)
Color/FormRed monoclinic prisms from aqueous methanol
Melting PointDecomposes at 277 °F (NTP, 1992)
Solubilityless than 1 mg/mL at 70 °F (NTP, 1992)
IUPAC Name3,5,6,8-tetrahydroxy-1-methyl-9,10-dioxo-7-[(2S,3R,4R,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]anthracene-2-carboxylic acid
Molecular FormulaC22H20O13
Molecular Weight492.4 g/mol
CAS1260-17-9
SMILESCC1=C2C(=CC(=C1C(=O)O)O)C(=O)C3=C(C2=O)C(=C(C(=C3O)O)[C@H]4[C@@H]([C@H]([C@@H]([C@H](O4)CO)O)O)O)O
InChIKeyDGQLVPJVXFOQEV-JNVSTXMASA-N
Catalog NoKC.310099
Pack sizes1gm · 5gm

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