12AX7 - 10-8-2008 at 14:19
Reading the MSDS on a lead-free solder product (claiming 0.25-1% Ag, 3-6% Cu), I noticed "incompatibility: chlorides, turpentine". Now chlorides I
suppose I can understand, they'll mostly cause corrosion and such, not really a hazard, but turpentine? That's got to be a typo!
Tim
jokull - 11-8-2008 at 05:44
Hi.
Sometimes companies (specially small businesses) are lazy or avaricious so that they never take care of chemical tests necessary to fill the MSDS.
YT2095 - 11-8-2008 at 22:56
just a guess, but since quite a few solders have a resin core, is it possible that turpentine may act as a solvent or perhaps denature this resin
making the solder useless?
12AX7 - 12-8-2008 at 10:45
Maybe, but that's internal, it would only act on the end a little way. And this solder is solid.
Tim
unionised - 12-8-2008 at 11:29
My guess is finely divided Cu or Ag acting as a catalyst for the auto-oxidation of the turpentine.
bfesser - 12-8-2008 at 11:39
What's the other 93+% of the of the solder?
[Edited on 8/12/08 by bfesser]
12AX7 - 12-8-2008 at 14:28
Tin, of course. Incidentially, it works reasonably well as solder.
Tim
Mr. Wizard - 13-8-2008 at 09:30
Often MSDSs have to include quantities and situations not encountered in normal situations. Like what would happen if railroad cars of the materials
were mixed and subjected to a fire or heat, for days or weeks. This doesn't explain what the reputed dangers are in the MSDS you mention. It is
curious.
Who would think that a warehouse full of boxed latex gloves would ignite themselves, or a dockside pile of steel lathe turnings would heat up and
auto-ignite?
Perhaps some incident with the solder in bulk, along with chlorides, water and, turpentine, generated some chlorine by electrolysis and caused an
ignition?
Maybe we should experiment? 