Tropaeolin

Tropaeolin is a name given to several dyes: ...
Found on http://en.wikipedia.org/wiki/Tropaeolin

Tropaeolin

• (n.) A name given to any one of a series of orange-red dyestuffs produced artificially from certain complex sulphonic acid derivatives of azo and diazo hydrocarbons of the aromatic series; -- so called because of the general resemblance to the shades of nasturtium (Tropaeolum).
Found on http://thinkexist.com/dictionary/meaning/tropaeolin/
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