GLYPTOTHEK (from Gr. y?tnrros, carved, and OiiKf, a

See also:

• PLACE (through Fr. from Lat. platea, street; Gr. IrAar6s, wide)

place of storage)  , an architectural term given to a gallery for the exhibition of sculpture, and first employed at Munich, where it was built to exhibit the sculptures from the temple of Aegina . hydes, thus: 3 (CH 2) 2C H • C HO +KHO = (CH 3)2CHCO2K + (CH,)2CH•CH(OH)•CH(OH)•CH(CH,)2 . The tertiary glycols are known as pinacones and are formed on the reduction of ketones with sodium amalgam . The glycols are somewhat thick liquids, of high boiling point, the pinacones only being crystalline solids; they are readily soluble in water and alcohol, but are insoluble in ether . By the action of dehydrating agents they are converted into aldehydes or ketones . In their general behaviour towards oxidizing agents the primary glycols behave very similarly to . the ordinary primary alcohols (q.v.), but the secondary and tertiary glycols break down, yielding compounds with a smaller carbon content . Ethylene glycol, C2H4(OH)2, was first prepared by A . Wurtz (Ann. chim., 1859 [31, 55, p . 400) from ethylene dibromide and silver acetate . It is a somewhat pleasant smelling liquid, boiling at 197° to 197.5° C., and having a specific gravity of 1.125 (0°) .