caustic soda/sodium hydroxide
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caustic soda/sodium hydroxide
anybody got any hints or tips on useing this stuff to clean metal?
do you buy it in as a powder that you mix up yourself?
one of my lads told me that his old boss used to use it to clean army kitchens
do you buy it in as a powder that you mix up yourself?
one of my lads told me that his old boss used to use it to clean army kitchens
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i know, and its also the main thing in most alloy wheel cleaners bar the actual water
either sodium or potassium from looking at the labels/tech data of the stuff i buy in
either sodium or potassium from looking at the labels/tech data of the stuff i buy in
#4
It used to come in pellet form,
used to decoke 2 stroke exhausts
you used to seal one end, drop in a couple of pellets and add water,
and after xxx mins drain and rinse,
its a b*gger in reality,
not nice at al
Martl
used to decoke 2 stroke exhausts
you used to seal one end, drop in a couple of pellets and add water,
and after xxx mins drain and rinse,
its a b*gger in reality,
not nice at al
Martl
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Don't get it in your eyes or on your skin for that matter!
NaOH Material Safety Data Sheet
Steve
Ps I thought it was mineral acids in most alloy cleaners rather than caustic.
NaOH Material Safety Data Sheet
Steve
Ps I thought it was mineral acids in most alloy cleaners rather than caustic.
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Originally Posted by Steve Sherwen
Don't get it in your eyes or on your skin for that matter!
NaOH Material Safety Data Sheet
Steve
Ps I thought it was mineral acids in most alloy cleaners rather than caustic.
NaOH Material Safety Data Sheet
Steve
Ps I thought it was mineral acids in most alloy cleaners rather than caustic.
i dont really want to buy from supermarkets, i was to buy it "raw" so i can mix it myself
i have 4 barrels of stuff here that has phosphic acid *i think* so i can asume its the same kind of nasty crap?
Last edited by StickyMicky; 28 February 2006 at 02:36 PM.
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Originally Posted by StickyMicky
i have 4 barrels of stuff here that has phosphic acid *i think* so i can asume its the same kind of nasty crap?
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Phos acid is more corrosive than caustic.
Castic is an excellent degreaser. Phosphoric acid will eat the metal.
I used to work on a plant that made the stuff and you should have seen it fizz with concrete and 316L stainless steel! We used either PTFE lined pipe or hastalloy for pipework, tanks and pumps.
Steve
Castic is an excellent degreaser. Phosphoric acid will eat the metal.
I used to work on a plant that made the stuff and you should have seen it fizz with concrete and 316L stainless steel! We used either PTFE lined pipe or hastalloy for pipework, tanks and pumps.
Steve
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Originally Posted by Steve Sherwen
Phos acid is more corrosive than caustic.
Castic is an excellent degreaser. Phosphoric acid will eat the metal.
I used to work on a plant that made the stuff and you should have seen it fizz with concrete and 316L stainless steel! We used either PTFE lined pipe or hastalloy for pipework, tanks and pumps.
Steve
Castic is an excellent degreaser. Phosphoric acid will eat the metal.
I used to work on a plant that made the stuff and you should have seen it fizz with concrete and 316L stainless steel! We used either PTFE lined pipe or hastalloy for pipework, tanks and pumps.
Steve
the phosphoric stuff is used to clean tiles would you belive.
i have some heavy duty wheel cleaner that i buy in 5 lite containers, and it is marketed as also having a use to remove concrete from plant machinery when not watered down
#13
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I think he means potassium hydroxide, rather than elemental potassium. Although that would clean drains pretty effectively (mostly by demolishing them).
As stated above, sodium hydroxide is biblically unpleasant stuff. It is strongly exothermic when added to water: under no circumstances add water to the solid form unless you always wondered what it would feel like to be flayed- always add the compound to water (slowly!) and expect the solution to get very hot. And I'm not exaggerating. Strong solutions are extremely caustic, and more dangerous to you than concentrated sulphuric acid. It dessolves fat in your skin on contact, causing the skin to shrink, then break up and blister. There may well be little pain at first, but if you feel a "soapy" texture on your skin, head for running water as fast as you can. Wear goggles and thick rubber gloves when hadling the crystals/pellets, and when handling strong (or even medium) solutions. This is not namby-pambyism, but common sense with that stuff.
Potassium hydroxide is nearly as bad, but not quite: treat exactly the same.
M
As stated above, sodium hydroxide is biblically unpleasant stuff. It is strongly exothermic when added to water: under no circumstances add water to the solid form unless you always wondered what it would feel like to be flayed- always add the compound to water (slowly!) and expect the solution to get very hot. And I'm not exaggerating. Strong solutions are extremely caustic, and more dangerous to you than concentrated sulphuric acid. It dessolves fat in your skin on contact, causing the skin to shrink, then break up and blister. There may well be little pain at first, but if you feel a "soapy" texture on your skin, head for running water as fast as you can. Wear goggles and thick rubber gloves when hadling the crystals/pellets, and when handling strong (or even medium) solutions. This is not namby-pambyism, but common sense with that stuff.
Potassium hydroxide is nearly as bad, but not quite: treat exactly the same.
M
Last edited by _Meridian_; 01 March 2006 at 07:51 AM.
#15
can be used to clean grout from floor tiles. just do a test patch first, and make sure any stailess items are removed as the fumes can tarnish
used a 32% concentration called "spirits of salts" bought from local hardwre store.
used a 32% concentration called "spirits of salts" bought from local hardwre store.
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