Suō (Brazilwood) - left (288 L)
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| Museum number | 288 |
|---|---|
| Uemura number / title | ; "Haze-some 25" |
| Folder location | 4th shelf |
| Sample location | left (288 L) |
| Fiber type | silk |
| Color | red |
| 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 (larger quantity) |
| Other auxiliary agent | ash water |
| Uemura'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. |
| Uemura's date | Kyoto |