https://www.alkeminaturaldyes.com.au/product-page/brazilwood-sappanwood-powder
Sappanwood Powder | Alkemi Natural Dyes
100% Sappanwood Powder ~ Caesalpinia sappan A hardwood tree native to South and Southeast Asia and South America. The heartwood is used as a dye material, rich...
natural dyessappanwoodpowderalkemi
https://shosointen-glossary.narahaku.go.jp/suo/
蘇芳 ｜ Sappanwood ｜ 正倉院展用語解説 ｜ The Exhibition of Shōsō-in Treasures Glossary
正倉院展用語解説では正倉院宝物にもちいられた材質や技法、関連する事項などを調べることができます。
the exhibitionsappanwoodtreasuresglossary