Assessment of Exposure to Sensitizing Rosin-derived Compounds from Electronics Soldering Final Report
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Bullous allergic reaction caused by colophonium in medical adhesives.
Colophonium (rosin, CAS no. 8050-09-7) is a complex mixture of >100 different compounds derived from pine trees. It is a good tackifier, can be used as an emulsifier, and has acid properties without causing corrosion. Because of these properties, colophonium is used in various products, such as soldering fluxes, paper, cosmetics (depilatory waxes, soaps, hair gel, and nail polish), cutting flui...
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Colophony is known to cause occupational asthma and dermatitis. Biological monitoring may be useful in assessing exposure. This paper describes a method for the analysis of dehydroabietic acid in urine and its potential use as a marker of colophony exposure. The method involves hydrolysis, solvent extraction, derivatization and analysis by gas chromatography-mass spectrometry. Twenty-eight work...
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The aim of this study was to determine the specific agent responsible for eczema on the forearms of 2 electronic assemblers who cleaned out a flux-spraying unit once a week. Soldering flux can be a source of skin irritation as well as allergy. Patch test with dried flux residue (as is) and rosin in dilution series of 20%, 10%, and 1% in olive oil was performed. Readings were taken on day 2 and ...
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By R i c k R o n e y One logical approach to eliminating chlorofluorocarbons is to use water-soluble solder pastes. For years, elccaonic assembly houses have used aqueous cleaning for removing the water-soluble Hucs of the wave soldering operation. In fact, aqueous cleaningof assemblies bas been studied and characterized extensively. Obviously, a "drop-in" solder paste that could be cleaned in ...
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