butter of antimony

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but·ter of an·ti·mo·ny

a concentrated acid solution of antimony trichloride.
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References in periodicals archive ?
But such eccentric obsessions have a charming peculiarity; likewise, Roos discusses fish, shells and spiders, the chirality (or 'handedness') of snails, petrified oysters, remedies made of butter of antimony and crayfish eyes, sea lilies and sea unicorns.