[3b] J. Chem. Soc. 95, 235 (1909); Chem. News 98, 166 (1908).

[4b] Ber. 23, 752 (1890).

[5b] Chem. News 66, 223 (1892).

[6b] Ber. 27, 3292 (1894);

[7b] Ber. 21, 2637 (1888).



XI

MESITYLENE

3 CH3COCH3 + (H2SO4)--> C6H3(CH3)3 +3H2O

Prepared by ROGER ADAMS and R. W. HUFFERD. Checked by H. T. CLARKE
and W. W. HARTMAN.

1. Procedure

IN a 12-l. round-bottom flask, arranged so that the contents
can be mechanically stirred, are placed 4600 g. (5750 cc.)
of technical acetone. The flask is then well cooled with an
ice-and-salt mixture, until the temperature of the acetone
is between 0'0 and 5'0. Stirring is started, and 4160 cc.
of commercial concentrated sulfuric acid is run in at such a rate
that the temperature of the mixture never rises above about 10'0.