Update on Oxalic acid

[Heckler]

Yes!!

 

[MapisM]

[ QUOTE ]
On with the potion and leave for 20 mins.

[/ QUOTE ]Care to explain in more details?
I for one would be interested to hear how did you apply it exactly: with a sponge and gloves maybe, and also brushing a bit or just wetting the surface? And rinsing with water after those 20 mins, or what else?
Besides, are you aware of any possible damage to painted (or varnished) parts, as also dje67 asked?
Thanks in advance!

 

[silver-fox]

thanks puddock /forums/images/graemlins/grin.gif

 

[Blackfeather]

Is it OK to use ordinary rubber gloves?

Also this seemed reasonably priced

Oxalic Acid

 

[David2452]

Whe using it on vertical surfaces mix a little walpaper paste powder with it and hey presto you have Y10 gel at whatever strength you decide.

 

[jimbaerselman]

Don't get too carried away by the poison/toxic element. This is what gives rhubarb its tart taste! The leaves carry a much higher concentration than the stalks though, and are definitely not to be eaten!

 

[Scotty_Tradewind]

I've used Oxalic acid on my white painted topsides a couple of times in recent years with excellent cleaning results.
The paint now has a matt finish. It may just be that the paint needed an annual polish ?

 

[boguing]

Any Pharmacy will get it for you.

 

[Foxy]

I wouldnt be so keen on oxalic acid crumble.......

 

[Heckler]

Just brushed it on with a deck brush, bit of a rub with the brush, left for 20 mins, hosepiped off, thats it, marigold rubber gloves are good, by the way the brush comes up really clean!!
Stu

 

[Heckler]

Looks good, my price was actually twice as much as I posted earlier, I had some other stuff as well and got it mixed up
Stu

 

[MapisM]

Thanks! nm

         

 

[Mistroma]

Key thing with Oxalic acid is temperature. As far as I remember, the reaction rate slows greatly below 10 degrees C (approx.). I usually dissolve it in warm water and hull and deck stains vanish before your eyes. Too low a temperature and the stain simply stays put.

 

[Mistroma]

I used to remember that mantra from days when I was a research chemist with ICI. Same goes for Caustic, add it to water not other way around. Really important when it is something that generates a lot of heat. Steam can eject the liquid into your face. However, as far as I can remember Oxalic acid doesn't generate huge amounts of heat. i.e. you'd have to trickle water on a pile of crystals and even that wouldn't be violent. Still better safe than sorry (water to sulphuric is a completely different ball game).