Balsam poplar buds

Common/vernacular names Poplar buds and balsam poplar buds. 

Acetophenone. Acetophenone [98-86-2] (methyl phenyl ketone) is a colorless Hquid that forms laminar crystals at low temperature (mp 20°C). It has a characteristic sweet orange blossom odor, and is soluble in alcohols and ethers. It is found in nature in oil of casatoreum, obtained from beavers oil of labdanum, recovered from plants and in buds of balsam poplar. It can be prepared by the Friedel-Crafts reaction (qv) of acetyl chloride with benzene in the presence of aluminum chloride however, this route is of Htde commercial significance. 

Balsam poplar Populus balsamifera Buds Snowshoe hare Mono- and sesquiterpenes Reichardtetfll., 1990b... 

Hausen BM, Evers P, Stuwe HT, Konig WA, Wollenweber E. Propolis allergy (IV). Studies with further sensitizers from propolis and constituents common to propolis, poplar buds and balsam of Peru. Contact Dermatitis 1992 26(l) 34-44. 

Beekeepers may be exposed to allergens found in propolis. Occupational dermatitis from balsam of Peru, propolis and poplar extract was reported in a beekeeper [264]. Persons sensitive to propolis are frequently sensitive to balsam of Peru, and there is an overlap of reactivity with poplar buds [265]. 

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