Manganese violet

Description

A synthetic pigment composed of a double salt of phosphoric acid with manganese and ammonium. Manganese violet was first introduced in Germany in 1868 as Nuernberg violet. By 1890 it was commercially available in England from Winsor & Newton. It has a deep rich violet hue but has poor hiding power and has not been widely used. Manganese violet is lightfast and can be used in all techniques except for fresco.

Synonyms and Related Terms

manganese ammonium phosphate; Pigment Violet 16; CI 77742; manganviolet; Manganviolett (Deut.); violet de manganse (Fr.); violeta de manganeso (Esp.); iodes toy magganioy (Gr.); violetto di manganese (It.); violetto minerale (It.); mangaan violet (Ned.); violeta de mangans (Port.); mineral violet; permanent violet; Nuernberg violet; Nurnberg violet; Nuremberg violet; burgundy violet; fast violet; permanent mauve

Other Properties

Decomposed by strong acids and bases. Insoluble in water.

Low birefringence.

ASTM lightfastness=1

Composition	(NH4)2Mn2(P2O7)2
CAS	10101-66-3
Refractive Index	1.67; 1.75; 1.72

Hazards and Safety

Toxic. Inhalation or ingestion of manganese can cause a nervous system disorder.

Gamblin Artist Colors:MSDS

Authority

• The Dictionary of Art, Grove's Dictionaries Inc., New York, 1996 Comment: 'Pigment'

• R. J. Gettens, G.L. Stout, R. J. Gettens, G.L. Stout, Painting Materials, A Short Encyclopaedia, Dover Publications, New York, 1966

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

• M. Doerner, M. Doerner, The Materials of the Artist, Harcourt, Brace & Co., 1934

• Reed Kay, Reed Kay, The Painter's Guide To Studio Methods and Materials, Prentice-Hall, Inc., Englewood Cliffs, NJ, 1983

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