Suō (Brazilwood) - right (288 R)

Normal

Museum number	288
Uemera number / title	一; 櫨染 廿五 "Haze-some 25"
Folder location	4th shelf
Sample location	right (288 R)
Fiber type	silk
Color	pale pink (slightly brown)
Dyestuff (Japanese common name)	蘇芳 : Suō
Dye (English common name)	Brazilwood
Dyestuff (botanical name)	Caesalpinia sappan L.
Plant part	bark /dried (?)
Dyestuff extraction	boiled in water
Auxiliary agent in dye bath	-
Mordant	alum
Other auxiliary agent	ash water
Uemera's notes	In the dye bath, ash water was added first, and a small amount of alum was also added to fix the color compound(s) to the fabric. The addition of alum did not alter the color of the dye bath, but produced a better light fastness. The resultant colors would be different from those achieved by a dyeing technique with this plant from a later period where only alum was used as mordant. A larger amount of alum was used for the right sample.
Uemera's date	Kyoto