Controlling health risks from rosin (colophony) based solder fluxes - indg249
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Occupational asthma due to a widely used soft solder flux not containing colophony.
A 19 year old woman presented with symptoms suggestive of occupational asthma. The causative agent was thought to be a soft solder flux, which did not contain colophony. The diagnosis was established by specific inhalation challenge tests, which demonstrated both late asthmatic reactions and short-lived increases in airway responsiveness.
متن کاملOccupational asthma in a factory making flux-cored solder containing colophony.
The prevalence of work-related wheeze and breathlessness was measured in factory employees manufacturing flux-cored solder. The flux contained colophony which was heated in the production process, exposing the workers to colophony fumes. Measurement of colophony in the breathing zone defined three grades of exposure with median levels of 1.92 mg/m3 (six subjects), 0.02 mg/m3 (14 subjects), and ...
متن کاملOccupational asthma to gel flux containing dodecanedioic acid.
Most occupational asthma from electronic solder fluxes is due to colophony (1, 2). We report the first case of occupational asthma to electronic colophony-free gel flux predominantly containing dodecanedioic acid. The patient worked as an electronics instructor from 1999; he initially used solder wire and a separate flux (both colophony). In 2002, he changed to a colophony-free solder wire (pre...
متن کاملSpecific IgE to colophony?
BACKGROUND Colophony (rosin) is a natural product obtained from coniferous trees. It is used in a diverse range of products such as adhesives, ink, paints and soldering fluxes. Some workers exposed to colophony during soldering can develop occupational asthma; at present, no specific IgE test is available to assess sensitization to colophony. METHODS Serum samples were obtained from exposed s...
متن کاملTHE BEST WAY TO Water-Soluble SOLDER PASTES USING ROSIN-BASED FLUXES
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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