Helping San Diego, California and beyond since 1997.
Do you need
volunteer, community service, work, military or court hours?
|
|
Helping San Diego, California and beyond since 1997.
|
|
Click here and add this page to your favorites!
|
Encyclopedia Britannica - Main :: PIG-POL |
|
|
PIPERONAL (heliotropine, protocatechuic aldehyde methylene ether), C8H6O3 , an aromatic aldehyde. It is prepared by oxidizing piperic acid with potassium permanganate (R. Fittig, Ann., 1869, 152, p. 35); by condensing methylene iodide with protocatechuic aldehyde (R. Wegscheider, Monats., 1893, 14, p. 388) ; or by oxidizing isosafrol with chromic acid. It forms long colourless crystals which melt at 370 C. and boil
smell , resembling that of heliotrope
perfumery . It is only slightly soluble in cold water, but is readily soluble in alcohol
ether
sodium bisulphite and with various bases (ammonia
aniline , methylamine, &c.).End of Article: PIPERONAL (heliotropine, protocatechuic aldehyde methylene ether), C8H6O3 If you wish, you can link directly to this article.
<a href="http://jcsm.org/StudyCenter/Encyclopedia/PIG_POL/PIPERONAL_heliotropine_protoca.html"> PIPERONAL (heliotropine, protocatechuic aldehyd... </a> |
|
|
(Previous) PIPERNO (anc. Privernum) |
(Next) PIPIT (cognate with the Lat. Pipio; see PIGEON) |
|
Sponsored Advertisements