can you buy it in powder form? You mean you all apply
hcl to a circuit board??? Aint there a less caustic
substance for the job?
HCL is an acid, not a caustic. Caustic is strongly alkaline - as in Sodium
Hydroxide (Caustic Soda), Calcium Oxide (Caustic Lime), etc.
Leaking NiCad and Alkaline batteries have a very strong alkaline content which
can dissolve traces, edge connectors, components, etc.
One uses an acid such as HCL to dissolve the strong hydroxide and other
products of the alkaline "corrosion".
Cheers,
Lyle
--- cctalk-bounces at
classiccmp.org
<ploopster at gmail.com> wrote:
Chuck Guzis wrote:
> On 7 Jan 2007 at 10:12, Lyle Bickley wrote:
>> 1. I've only been able to buy gallon sized
containers of the 30% HCL (Muriatic
>> Acid). That is very unwieldily to
handle. A
polyethelene containter with a
>> small "spout" (available at
drugstores) is an
easy solution. Just be careful
>> when transferring the acid from the
gallon
container to the poly container -
>> use a poly funnel - HCL is
"nasty" stuff.
>
> Another caution--DO NOT STORE THE CONTAINER IN
YOUR WORKSHOP OR
> WHEREVER YOU KEEP YOUR EQUIPMENT! Muriatic
acid
is hydrogen chloride
> gas dissolved in water and tends to
"fume". Which
means that if the
> cap on the container is slightly loose or
the
container is cracked,
> you'll be in for an eventual surprise.
>
> I kept a gallon of muriatic stored in my workshop
and thought the cap
> was screwed on tightly (it wasn't).
After about 2
weeks, I noted
> that all of my cast-iron shop equpment was
coated
with a fine
> dappling of rust. My HCl is now stored in a
weatherproof container
> out-of-doors. I can't imagine what such
fumes
might do to the
> innards of a disk drive.
>
> For a somewhat tamer substitute, one might try
sulfamic acid--a
> powder dissolved in water and normally used
for
cleaning masonry (as
> is muriatic acid). You can often find it at
stores that deal in
ceramic
tile supplies.
You can store hydrochloric acid dilute without
worrying about it fuming.
Peace... Sridhar
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