12AX7
Post Harlot
Posts: 4803
Registered: 8-3-2005
Location: oscillating
Member Is Offline
Mood: informative
|
|
MSDS bloopers?
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
National Hazard
Posts: 506
Registered: 22-2-2006
Location: Everywhere
Member Is Offline
Mood: Ice glassed
|
|
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
International Hazard
Posts: 1091
Registered: 31-5-2003
Location: Just left of Europe and down a bit.
Member Is Offline
Mood: within Nominal Parameters
|
|
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?
\"In a world full of wonders mankind has managed to invent boredom\" - Death
Twinkies don\'t have a shelf life. They have a half-life! -Caine (a friend of mine)
|
|
|
12AX7
Post Harlot
Posts: 4803
Registered: 8-3-2005
Location: oscillating
Member Is Offline
Mood: informative
|
|
Maybe, but that's internal, it would only act on the end a little way. And this solder is solid.
Tim
|
|
|
unionised
International Hazard
Posts: 5102
Registered: 1-11-2003
Location: UK
Member Is Offline
Mood: No Mood
|
|
My guess is finely divided Cu or Ag acting as a catalyst for the auto-oxidation of the turpentine.
|
|
|
bfesser
Resident Wikipedian
Posts: 2114
Registered: 29-1-2008
Member Is Offline
Mood: No Mood
|
|
What's the other 93+% of the of the solder?
[Edited on 8/12/08 by bfesser]
|
|
|
12AX7
Post Harlot
Posts: 4803
Registered: 8-3-2005
Location: oscillating
Member Is Offline
Mood: informative
|
|
Tin, of course. Incidentially, it works reasonably well as solder.
Tim
|
|
|
Mr. Wizard
International Hazard
Posts: 1042
Registered: 30-3-2003
Member Is Offline
Mood: No Mood
|
|
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? 
|
|
|
![[*]](images/xpblue/default_icon.gif){kind=icon}
