Abstract
Gas and tar generated from self-curing molds bonded with organic binders such as furan or urethane resins during casting were analyzed qualitatively by gas chromatography. It was shown that gases from all tested molds contain formaldehyde, acetaldehyde and benzene, and that gas from urethane molds contains styrene monomer. The tars generated from furan molds and urethane molds seem to contain benzo [a] pyrene and tar from the urethane mold seems to contain naphthylamine and biphenylamine.
These compounds were listed as carcinogenic substances by the Japan Industrial Hygienics Society in 1991, it is necessary to take enough care of the physical effects of the above mold.
