Thioindigo violet

Description

A synthetic colorant with an intense violet color. Thioindigo violet was first developed in 1905 by Friedlander. It was used in artist paints in 1907. Thioindigo is a sulfur dye with good lightfastness and washfastness.

Synonyms and Related Terms

Pigment Red 83; CI 73312; blanco de estaño (Esp.); thio-indigo; thioindigo red-violet B; thioindigo violet [Winsor & Newton]; garnet lake [MaimeriBlu]; permanent violet [Danial Smith]

Physical and Chemical Properties

ASTM (1999) lightfastness = II (very good)

Resources and Citations

• G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 284

• Ralph Mayer, A Dictionary of Art Terms and Techniques, Harper and Row Publishers, New York, 1969 (also 1945 printing)

• Monona Rossol, The Artist's Complete Health and Safety Guide, Allworth Press, New York, 1994 Comment: CI Pigment red 83; CI No. 73312 an indigo-like dye containing sulfur and chlorine

• Website: www.straw.com/sig/dyehist

• Website: www.handprint.com - PR88..ASTM (1999) rates its lightfastness in watercolors as very good (II)

• Art and Architecture Thesaurus Online, https://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000