[sdiy] Solder corrosion - what is it?

[Paul Perry]

orbit.dtu.dk/files/100370544/Corrosion_in_electronics.pdf

http://www.kester.com/Portals/0/Documents/FAQs/White_Residue.pdf

personally, i thnk that the grunge that develops gradually over years, is 
simply oxidation of the lead, accelerated by the presence of hygroscopic 
salts left after soldering.
So my guess is basic lead carbonate.

paul perry Melbourne Australia