Rose madder

Rose madder is the commercial name sometimes used to designate a paint made from the pigment madder lake, a traditional lake pigment extracted from the common madder plant Rubia tinctorum.

Madder lake contains two organic red dyes: alizarin and purpurin. As a paint, it has been described as "a fugitive, transparent, nonstaining, mid valued, moderately dull violet red pigment in tints and medum solutions, darkening to an impermanent, dull magenta red in masstone."

单词	Rose madder
释义	Rose madder 英语百科 Rose madder Rose madder is the commercial name sometimes used to designate a paint made from the pigment madder lake, a traditional lake pigment extracted from the common madder plant Rubia tinctorum. Madder lake contains two organic red dyes: alizarin and purpurin. As a paint, it has been described as "a fugitive, transparent, nonstaining, mid valued, moderately dull violet red pigment in tints and medum solutions, darkening to an impermanent, dull magenta red in masstone."
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