Dear Paul Zinc boils at 907 C.
Evaporated zinc is much more harmful. Cadmium (which is used in plating and the paints/inks on plastic bags) boils at 767 and is a problem as well. Regards Crispin -----Original Message----- From: Stoves [mailto:[email protected]] On Behalf Of Paul Anderson Sent: Friday, February 01, 2013 2:39 PM To: Discussion of biomass cooking stoves Subject: [Stoves] At what temperature are the bad gases from zinc created, vs harmless zinc oxide? Stovers, Galvanized metal in stoves gets mentioned occasionally. Do we have a clear answer about what is the temperature at which the zinc makes poisonous gases (such as when welding) versus making zinc oxide (the white stuff that you can by in a tube to put on your nose to prevent sunburn)? Is it bad if the temperature is at 400 C to 700 C? Or does it need to get much higher? Paul -- Paul S. Anderson, PhD aka "Dr TLUD" Email: [email protected] Skype: paultlud Phone: +1-309-452-7072 Website: www.drtlud.com _______________________________________________ Stoves mailing list to Send a Message to the list, use the email address [email protected] to UNSUBSCRIBE or Change your List Settings use the web page http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists .org for more Biomass Cooking Stoves, News and Information see our web site: http://www.bioenergylists.org/ _______________________________________________ Stoves mailing list to Send a Message to the list, use the email address [email protected] to UNSUBSCRIBE or Change your List Settings use the web page http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org for more Biomass Cooking Stoves, News and Information see our web site: http://www.bioenergylists.org/
