| 释义 |
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.
1852Chemical 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. 1860O'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. 1890Nature 4 Sept. 444 The relative value of violent explosive agents, like picric acid or wet gun-cotton. |