Chris; This is the Holy Grail for all SM, underfill, moulding compounds, etc. suppliers. Unfortunately, to make epoxies at a reasonable price requires the use of epichlorohydrin. This reaction will leave free chlorides, in addition to hydrolyzable chlorides. We do obtain some reasoably "clean" epoxy resins from Ciba and from Japan. However, these still require additional clean-up for use in most of our specialty applications. So to answer your question - besides Ciba and our proprietary japanese source we have not found any. Leo Roos Dexter Electronic Materials ################################################################ TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c ################################################################ To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TechNet <your full name> To unsubscribe: SIGNOFF TechNet ################################################################ Please visit IPC's web site (http://www.ipc.org) "On-Line Services" section for additional information. For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 ################################################################