Boric (sp?) Acid

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IIRC, BigNick kindly gave me some boric acid many years ago, along with explicit instructions on how to remove the rust from my stantions using said gift of magic powders. Alas, my memory needs a reboot. If BigNick is not around, does anyone else know what portions to use and how to apply the stuff?

TIA

EDIT: Come to think of it, it may not even be boric acid, but some other kid of white powder. Oh dear, this could get confusing.
 
YES!!!! That's the name I was trying to remember.
 
[ QUOTE ]
YES!!!! That's the name I was trying to remember

[/ QUOTE ] I which case you only have to search these forums to find masses thats been said. I hope it is correctly labelled. It is rather poisonous
 
Can't remember the mix but have a search. There has been loads of info about it here. Remember it is quite lethal if swallowed.
 
Its not fantastically soluble. Try around 10% but use hot water to dissolve it. its not going to be critical anyway.
 
Thanks Vic, that mixture worked wonders and the rust spot is now all nice and shiny.
 
From the CRUISER'S DICTIONARY

"OXALIC ACID - An organic acid, good for removing rust stains. Can be obtained in powdered form from paint stores (it is used to bleach and clean raw timber). Will only dissolve completely in hot water.
- Rehydrate - 1 Tbsp. oxalic acid to 2 cups water. Works slowly, not as active as muriatic acid or phosphoric acid - safer on fiberglass. See "Stain Remover" for a more efficient way of using it. Store in non-metallic container.
- Precautions: Although the skin can be burned by the acid, this acid can also damage internal tissues through absorption through the skin without burning the skin (as does hydrofluoric acid). With no physical warning of the danger, I suggest that you use rubber gloves. We have used oxalic acid for years with no injuries of problems. Also be careful and don't inhale fumes or powder. Never boil the solution."
 
There is an interesting historical mention of oxalic acid.

It is found in quite large quantities in rhubarb leaves, stalks are fine but leaves poisonous.

During WW I the then Ministry of Food used to put out bulletins advising housewives how to best manage on the shortage of foodstuffs.

In one of these was the advice to use the "waste" rhubarb leaves instead of cabbage.

A large number of people were made ill and some died as a result. There were seriously stupid and ill informed politicians even back then /forums/images/graemlins/grin.gif
 
[ QUOTE ]
It is found in quite large quantities in rhubarb leaves, stalks are fine but leaves poisonous.

[/ QUOTE ] More info on that HERE
 
boric acid is used for getting rid of cockroaches. IIRC you can make it into a pellet with some other substance, the roaches love it, their systems dont.
 
friend off mine is a furniture restorer and he says disolve a set quantity in water and then add ox acid till there is about 25% at bottom of jar not disolved. Then u simply keeep topping up till it disolves and then start over again.

bob
 
[ QUOTE ]
boric acid is used for getting rid of cockroaches

[/ QUOTE ] About 5% or so of borax in sugar syrup makes a good ant killer. (sold as Nippon)
 
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