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gallein

(gal′ē in, gal′ēn)

noun

a violet dye, CHO, formed by heating pyrogallol with phthalic anhydride, used as an indicator and as a mordant dye

Origin: gall(ic acid) + (phthal)ein

See gallein in American Heritage Dictionary 4

noun

A brown or metallic green dye, C₂₀H₁₂O₇, used as a pH indicator and in dyeing textiles.

Origin:

Origin: gall(ic acid)

Origin: + (phthal)ein

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