| 单词 | dichloro- |
| 释义 | dichlor-, dichloro- Chem.
[f. di-2 + chloro-.]
A formative element in names of compounds formed by the substitution of two atoms of chlorine for hydrogen atoms, as dichloraˈcetic acid, dichlorˈhydrin: see chlor- and chloro-; ˌdichlorodiˌfluoro-ˈmethane, a colourless, easily liquefied gas, CCl2F2, used as a refrigerant and as a propellant in aerosols, etc.
1873Fownes' Chem. (ed. 11) 627 Dichlorhydrin is treated with potash, it gives up a molecule of hydrochloric acid. Ibid. 679 Dichloracetic acid is produced by the action of chlorine and iodine on boiling acetic acid. Ibid. 759 Of dichlorobenzene, two modifications are known. 1876Harley Mat. Med. (ed. 6) 346 Allyl-chloroform is unstable, and breaks up into hydrochloric acid and dichlorallylene. [1930Engineering 13 June 776/2 Dichlorofluoromethane as a refrigerant.] 1958Times Rev. Industry Feb. 68/3 The liquid refrigerant used in the compression cycle may be dichlorodifluoromethane. 1964N. G. Clark Mod. Org. Chem. ix. 171 Dichlorodifluoromethane..is used as a propellant in insecticide sprays, hair lacquers, shaving lather, etc. |
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