picric, a. Chem.
(ˈpɪkrɪk)
[mod. f. Gr. πικρ-ός bitter + -ic.]
In picric acid, also called trinitrocarbolic or carbazotic acid, artificial indigo-bitter, a yellow intensely bitter substance (C6H3N3O7 = C6H3(NO2)3O), crystallizing in yellow shining prisms or laminæ, first observed by Hausmann in 1788, used in dyeing and more recently in the manufacture of explosives.
| 1852 Chemical Gaz. X. 137 Thus picric acid is phenylous acid..in which a substitution of 3 equivs. NO4 for 3 equivs. H has taken place... Picric acid is consequently trinitrophenylous acid. 1860 O'Neill Chem. Calico Print. 256 Picric Acid.—This is only lately introduced as a dyeing material for silks and woollens: it has no affinity for cotton. 1890 Nature 4 Sept. 444 The relative value of violent explosive agents, like picric acid or wet gun-cotton. |