| 释义 |
dinitro- Chem.|daɪˈnaɪtrəʊ-|
(Before a vowel dinitr-).
[f. di-2 + nitro-.]
1. Having two equivalents of the radical NO2 taking the place of two atoms of hydrogen, as dinitrobenzene C6H4(NO2)2, dinitrophenol C6H4(NO2)2O.
1869Roscoe Elem. Chem. 409 We also know a solid substance called di-nitro-benzol. 1873Fownes' Chem. (ed. 11) 760 Dinitrobenzene is produced by warming benzene with a mixture of nitric and sulphuric acids. 1892Pall Mall G. 17 Oct. 7/2 Aniline colours which are positively poisonous..are picric acid and its salts..dintro-cresol, and aurantia.
2. dinitro-ˈcellulose, a substance C6H8(NO2)2O5, analogous to gun-cotton (trinitro-cellulose), produced by the action of a mixture of nitric and sulphuric acids on cotton, whereby two of the hydrogen atoms in the cellulose C6H10O5 are replaced by NO2. Also called soluble pyroxylin: its solution in ether and alcohol forms collodion. |