Use of HCL to dissolve severe corrosion from NiCad or Alkaline Batteries or oxidation
ploopster at gmail.com
Sun Jan 7 13:30:07 CST 2007
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.
I don't believe it'll fume when stored under mineral oil too.
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