| 释义 |
dulcite Chem.|ˈdʌlsaɪt|
[f. L. dulc-is sweet + -ite.]
A saccharine substance (C6H14O6) similar to and isomeric with mannite, obtained from various plants, and known in the crude state as Madagascar manna. Also called dulcin, dulcitol, dulcose.
1863–72Watts Dict. Chem. II. 349 Dulcite (from Madagascar) crystallises in colourless highly lustrous prisms of the monoclinic system.
Hence ˈdulcitaˌmine, the amine or compound ammonia of dulcite C6H8(OH)5.NH2. ˈdulcitan, the anhydride of dulcite, C6H12O5, a very viscid neutral syrup. ˈdulcitaˌnide, a compound of dulcitan with an acid, analogous to the mannitides and glycerides, as benzo-dulcitanide, butyro-dulcitanide.
1863–72Watts Dict. Chem., Dulcitan..the anhydride of dulcite (C6H14O6—H2O), obtained by heating dulcite for some time to near 200°C. Ibid., Dulcitanides..may be regarded as dulcitan, in which 2 or 4 at. H are replaced by acid radicles. 1873Fownes' Chem. (ed. 11) 632 Dulcite..heated with organic acids forms ethers called dulcitanides..yielding by saponification, not dulcite, but dulcitan. |