I don't think the Diethyl Thiourea is the correct chemincal but its been a long time since chemistry 101. The articel lists Thiourea which is I think is CAS 62-56-6 (CH4 N2 S). Diethylthiourea is different CAS 105-55-5 ( (c2H5NH)2 CS )
Craig
--- In Homebrew_PCBs@yahoogroups.com, Alessio Sangalli <alesan@...> wrote:
>
> On 07/21/2010 09:29 AM, designer_craig wrote:
> > I have very good luck with elctroless tin. The formula I use came from the September 1971 issue of Ham Radio magazine.
> >
> > .5g Stannous Chloride
> > 2.0g Thiourea
> > 3.0g Sulfamic Acid
> > 100.0 mL Distilled water
>
>
> I have found the following sources, could you have a look and see if
> they look OK?
>
> 100g Stannous Chloride, $8.46
> http://www.boilerandcoolingwater.com/Stannous_Chloride_Powder_p/sc7555-j.htm
>
> 1lb Diethyl Thiourea Premium Quality, $14.00
> http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=270570789001&rvr_id=&crlp=1_263602_263622&UA=L∗F%3F&GUID=989a408611e0a0aad4e6a4c6fc0c48ad&itemid=270570789001&ff4=263602_263622
>
> 1lb Aqua Mix Sulfamic Acid Crystals, $4.91
> http://www.aquamixdirect.com/servlet/the-137/Aqua-Mix,-Sulfamic,-Acid,/Detail
>
> And, I renew my interest in some pictures of the results you had...
>
> bye!
> as
>