David, Correct about the limited test series per UL969. Label requirements depend on the equipment and intended end-use. Note that there are some label 'systems' where conditions of acceptability indicate the solvent test.
For some types of my employer's boxes, label test requirements were so onerous that just had to surrender and specify a stamped steel plate. But you must be immune to the screams of anguish from the project manager because of the $$$. So when the user pours non-polar solvents on your widget, the unit dissolves but the label remains...success. Brian -----Original Message----- From: Gelfand, David [mailto:[email protected]] Sent: Tuesday, March 26, 2013 12:32 PM To: [email protected]; [email protected] Subject: RE: [PSES] 60950-1 durability test solvent Brian, I am not an organic chemist either. With great effort I recall C and H with funny subscript numbers... We are using a UL 969-approved label system. Surprise, it didn't pass the hexane durability test! Looking through UL 969, there doesn't seem to be an equivalent durability test. It would appear that having a UL 969 approved label system does not guarantee passing the durability test as specified in 60950-1. Or as I asked my safety lab guy, "Did someone spike your hexane?" Has anyone ever encountered this problem before? Regards, David -----Original Message----- From: Brian Oconnell [mailto:[email protected]] Sent: Tuesday, March 26, 2013 3:01 PM To: [email protected] Subject: Re: [PSES] 60950-1 durability test solvent Next paragraph says "As an alternative, it is permitted to use a reagent grade hexane with a minimum of 85 % as n-hexane. NOTE The designation "n-hexane" is chemical nomenclature for a ?normal? or straight chain hydrocarbon. This petroleum spirit may further be identified as a certified ACS (American Chemical Society) reagent grade hexane (CAS# 110-54-3)." I am not an organic chemist. Perhaps acetone or methylcyclohexane would be suitable alternate. Heptane is considered close, but do not know if easily sourced. Also, as hexane is on the U.S. and Canada list of really bad carcinogenic stuff, and TC108 needs to find something else that is a reasonably available equivalent. Perhaps the best long-term solution would be use of UL969-approved label system. Brian -----Original Message----- From: [email protected] [mailto:[email protected]]On Behalf Of Gelfand, David Sent: Tuesday, March 26, 2013 11:32 AM To: [email protected] Subject: 60950-1 durability test solvent Is there a product I can buy at the hardware store that is roughly equivalent to the hexane specified in durability test: " The petroleum spirit to be used for the test is aliphatic solvent hexane having a maximum aromatics content of 0,1 % by volume, a kauributenol value of 29, an initial boiling point of approximately 65 °C, a dry point of approximately 69 °C and a mass per unit volume of approximately 0,7 kg/l." Thanks in advance. David Kontron Canada Inc. - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]>
