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Hypernic extract


The water-soluble colorant extracted from brazilwood and sappanwood. Brasilin oxidizes in air to form brasilein which is soluble in water. It is used as a dye, ink for red and purple colors. Brasilin is also used as an acid-base indicator turning yellow in acid and bright red in alkali.

See brazilwood dye.

Synonyms and Related Terms

Natural Red 24; CI 75280; brasileina (Esp.); brasiliini (Fin.); brasilina (It.); brasileína (Port.); brazilein; brazilin; Brazilwood extract; permambuco extract; hypernic extract

Other Properties

Yellow, needle-like crystalline solid

Soluble in water, ethanol, ether, alkalis.

Composition C16H14O5
Melting Point 130 (dec)
Molecular Weight mol. wt. = 286.28

Hazards and Safety

Sensitive to air and light.

Sources Checked for Data in Record

  • Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
  • The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 1392