Anthragallol

Description

Orange needle crystals. Anthragallol is one of the natural colorants extracted from madder and other Rubiaceae family plants. It dissolves in acids to give a brownish-red color.

Synonyms and Related Terms

1,2,3-trihydroxyanthraquinone; CI 58200; antragalol (Esp.); antragallolo (It.)

Physical and Chemical Properties

• Melting Point = 312-313 C

Resources and Citations

• Artists' Pigments: A Handbook of their History and Characteristics, Elisabeth West FitzHugh, Oxford University Press, Oxford, Vol. 3, 1997 Comment: H.Schweppe, J.Winter, "Madder and Alizarin"