A rare or obsolete chemical term, possibly referring to a white or pale compound with tannin-like properties.
From Latin 'albus' (white) + 'pannin' (possibly related to tannins or plant compounds), a chemically constructed term from the 19th century.
This term has almost vanished from chemistry—it's a reminder that historical scientific terminology was sometimes created ad-hoc when new compounds were discovered before standardized naming systems existed.
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