Yes, it is dangerous and it could be home brewed- YMMV
MG Chemicals MSDS shows it is stannus sulfate, sulfuric acid, and as I
recall, it is mixed with water for the balance.
CAS# Chemical Name Percentage by weight ACGIH TWA Osha Pel Osha Stel
7488-55-3 Stannous Sulfate 1-3 % N/E N/E N/E
7664-93-9 Sulfuric acid 9-10 % 0.2 mg/m3 N/E N/E
I would recommend getting it from a known source pre-mixed for the intended
purpose.
73
Bill Laakkonen
N4BKT
On Fri, Nov 26, 2010 at 4:43 AM, liquias <liquias@...> wrote:
>
>
> Hi,
> has anyone ever heard of this "Liquid Tin" by m.g. chemicals ?
> this material is supposed to plate the PCB after the etch process, and
> passivate the copper.
> I never seen this stuff sold anywhere, and I can't get it since I live in
> Israel.
>
> first, a link to see it with your own eyes:
> http://www.youtube.com/watch?v=3aEwTRMEkOM
> look at around 3:30 minutes...
>
> second, does anyone know how to home-brew this material ? Is it dangerous
> to use ?
>
> third, does any of you use any other process to passivate the copper after
> etching ?
>
> Thanks in advance,
> Liquias.
>
>
>
[Non-text portions of this message have been removed]