jalapin Chem.
(ˈdʒæləpɪn)
[f. mod.L. jalāpa (see prec.) + -in.]
A glucoside resin, one of the purgative principles of officinal jalap and allied plants; the resin of jalap-stalks. So jaˈlapic a. in jalapic acid, C68H59O35, an acid produced by dissolving jalapin in aqueous solutions of the alkalis or alkaline earths. Its salts are ˈjalapates.
| 1832 Encycl. Brit. (ed. 7) VI. 467/1 Jalappin..was first obtained by Mr. Hume in 1824. 1865–72 Watts Dict. Chem. III. 439 Jalapin is a colourless amorphous resin, translucent when in thin plates. Ibid. 437 Jalapate of lead..Hydrate of lead dissolves in boiling aqueous jalapic acid, forming an amorphous, easily soluble salt. |