H2O2 in quarts or gallons

[RST Engineering \(jw\)]

I'm going to start etching some prototype boards using the laser-toner
method of resist (it honest to gesundheit works) and the muriatic acid -
hydrogen peroxide etchant.

Pints from the drug store are possible, but I'd really like to buy in
slightly larger quantities. What sort of store would handle 3% peroxide in
either quarts or gallons?

Jim

 

[Pooh Bear]

I'm going to start etching some prototype boards using the laser-toner
method of resist (it honest to gesundheit works) and the muriatic acid -
hydrogen peroxide etchant.

Pints from the drug store are possible, but I'd really like to buy in
slightly larger quantities. What sort of store would handle 3% peroxide in
either quarts or gallons?

Why not buy a stronger solution and dilute as required ?

Graham

 

[Joerg]

Hello Jim,

I'm going to start etching some prototype boards using the laser-toner
method of resist (it honest to gesundheit works) and the muriatic acid -
hydrogen peroxide etchant.

Pints from the drug store are possible, but I'd really like to buy in
slightly larger quantities. What sort of store would handle 3% peroxide in
either quarts or gallons?

No idea. I'd ask Linde or a large chemicals supplier. If they can't
supply it they'd sure know where you could go.

Be careful. That muriatic acid is really nasty. Never ever let it get
close to chlorine or other stuff. A friend accidentally had a little
spill on the garage floor. He said it began eating a hole into the concrete.

Regards, Joerg

 

[RST Engineering \(jw\)]

Because in this country generally the only strength you can get without
going to a chemical supply house is a 3% solution.

Jim

 

[Tim Williams]

I've heard of wood bleach (stain aisle) and Pool Shock (30% H2O2, not the
calcium hypochlorite or TCCA) being found in places.

At least something like hair bleach (6 to 12%, IIRC) would be better than
3%. At 3% H2O2, you might as well bubble air through the solution.

Tim

 

[John Popelish]

I'm going to start etching some prototype boards using the laser-toner
method of resist (it honest to gesundheit works) and the muriatic acid -
hydrogen peroxide etchant.

Pints from the drug store are possible, but I'd really like to buy in
slightly larger quantities. What sort of store would handle 3% peroxide in
either quarts or gallons?

I just got rid of an old gallon of 20% peroxide bottled for use in a
hair salon. I would look at suppliers for those folks.

 

[[email protected]]

Why not buy a stronger solution and dilute as required ?

There are safety issues with stronger solutions of hydrogen peroxide.
The Russians used high test peroxide as the fuel in their torpedos
until they lost a submarine recently. The English lost their submarine
around 1947.

http://en.wikipedia.org/wiki/Hydrogen_peroxide

IIRR copper ions catalyse the decomposition of hydrogen peroxide, which
might be relevant when etching copper from printed circuit boards ...

 

[cbm5]

I'm going to start etching some prototype boards using the laser-toner
method of resist (it honest to gesundheit works) and the muriatic acid -
hydrogen peroxide etchant.

Pints from the drug store are possible, but I'd really like to buy in
slightly larger quantities. What sort of store would handle 3% peroxide in
either quarts or gallons?

Jim

Here's a hint: peroxide is dirt cheap, even in the pint bottles. What's
more, it decomposes somewhat quickly just sitting on the shelf,
depending on light and heat in the environment. The amount you need for
muratic etching is not too much, and you may find that keeping large
quantities on hand means it goes bad before you use it all.

 

[Ian Stirling]

There are safety issues with stronger solutions of hydrogen peroxide.
The Russians used high test peroxide as the fuel in their torpedos
until they lost a submarine recently. The English lost their submarine
around 1947.

That's high concentration (>>50%) and with no stabilisers.
35% is commonly sold, and is not especially hazerdous.

I'd suggest starting with a yellow pages, and go down the chemical
suppliers reciting the mantra "I'd like to place a private order for a
drum of H2O2", and seeing what happens.

50% is not typically available in volumes smaller than railroad cars.

 

[[email protected]]

I'm going to start etching some prototype boards using the laser-toner
method of resist (it honest to gesundheit works) and the muriatic acid -
hydrogen peroxide etchant.

Pints from the drug store are possible, but I'd really like to buy in
slightly larger quantities. What sort of store would handle 3% peroxide in
either quarts or gallons?

Jim

Jim,

WALMART (in the USA) sells 3% Hydrogen Peroxide in 1-quart plastic
bottles.

And some larger drugstores/pharmacies in the USA have it in sizes >
pint.

Regards,

- Tom Gootee

http://www.fullnet.com/u/tomg

 

[Kevin White]

I'm going to start etching some prototype boards using the laser-toner
method of resist (it honest to gesundheit works) and the muriatic acid -
hydrogen peroxide etchant.

Pints from the drug store are possible, but I'd really like to buy in
slightly larger quantities. What sort of store would handle 3% peroxide in
either quarts or gallons?

Jim

Google finds a number of suppliers including 35% by mail order in
containers from pints to gallons.

http://www.h2o2-4u.com/price.html

keivn