ex-Gladys
Well-Known Member
Having used Dilunett successfully last year, I though I'd try the skinflint's method this year. What is the correct strength of NaOH solution, and then wallpaper paste???
Caustic soda and Wallpaper paste
- Thread starter ex-Gladys
- Start date
macd
Well-Known Member
Strong: the caustic soda bottle should tell you mixing proportions. As to wallpaper paste, the idea is simply to stiffen the mix so it doesn't run off -- about the consistency of Nitromors. Note that the paste takes a few moments to reach full thickness.
VicS
Well-Known Member
Unless you can establish the concentration of caustic soda in Dilunett experiment. Start off at 5% or maybe 10% and gradually increase the concentration until the results are satisfactory.
Take care it gets quite warm, hot even if you are making more concentrated solutions, and gives off horrible fumes into the bargain. ( probablly a fine mist of caustic soda solution rather than true gaseous fumes) so do it out in the open. Stir while you are adding the solid and until it is all dissolved or it sets to form a solid mass that takes ages to dissolve. Then let it cool. Don't use aluminium or galvanised containers. Be wary of it getting too hot for polythene as well. Polypropylene (marked PP or 5 as the recycling code) would be a more sensible choice.
Wear gloves and gogles. Do not take even the slightest risk of getting it in your eyes. It is excruciatingly painfull, you won't be able to open your eyes to wash it out youself, and it is likely to cause permanent damage as it attacks the proteins which form the eye ball. It is worse than acids for this reason.
Make sure you have a good supply of water available to wash splashes off the skin and to wash away spillages.
Make the wallpaper paste as you would normally or a bit thicker. Some kinds take rather more than a few moments to become fully dissolved though.
I've tried to find some info on Dilunett on-line, a data sheet perhaps, but without success.
Take care it gets quite warm, hot even if you are making more concentrated solutions, and gives off horrible fumes into the bargain. ( probablly a fine mist of caustic soda solution rather than true gaseous fumes) so do it out in the open. Stir while you are adding the solid and until it is all dissolved or it sets to form a solid mass that takes ages to dissolve. Then let it cool. Don't use aluminium or galvanised containers. Be wary of it getting too hot for polythene as well. Polypropylene (marked PP or 5 as the recycling code) would be a more sensible choice.
Wear gloves and gogles. Do not take even the slightest risk of getting it in your eyes. It is excruciatingly painfull, you won't be able to open your eyes to wash it out youself, and it is likely to cause permanent damage as it attacks the proteins which form the eye ball. It is worse than acids for this reason.
Make sure you have a good supply of water available to wash splashes off the skin and to wash away spillages.
Make the wallpaper paste as you would normally or a bit thicker. Some kinds take rather more than a few moments to become fully dissolved though.
I've tried to find some info on Dilunett on-line, a data sheet perhaps, but without success.
HeadMistress
Well-Known Member
Pardon my ignorance...but what is the use for this mixture?
Vara
Well-Known Member
Paint remover,also good for cleaning ovens,grill pans and BBQs,basically anything where an application of caustic(alkaline)material is required.
Washes off and neutralises with water(lots),is nasty stuff to mix and there are probably lots of health and safety issues,environmentally probably neutral and best of all for this forum and me cheap!
Think it's known in the States as "Lye"
Washes off and neutralises with water(lots),is nasty stuff to mix and there are probably lots of health and safety issues,environmentally probably neutral and best of all for this forum and me cheap!
Think it's known in the States as "Lye"
2Tizwoz
Well-Known Member
Its been used for years for stripping pine furniture and so on. Cleans drains.
As schoolboys in the chemistry laboratory we were told it takes the skin off your flesh and the flesh off your bones.
I've never tried it for that though. /forums/images/graemlins/smile.gif
As schoolboys in the chemistry laboratory we were told it takes the skin off your flesh and the flesh off your bones.
I've never tried it for that though. /forums/images/graemlins/smile.gif
kds
Well-Known Member
I am afraid that water will never "neutralize" it - only dilute it. It is easy to be too casual with it and feel that the precautions are unnecessary. They are not !
Ken
Ken
Pete735
Well-Known Member
I'm not sure what other people have found,but I used both Dilunett and the Caustic Soda homemade version this yearand found the Caustic Soda version slightly better than Dilunett in that for a similar quantity put on the hull, I got more antifoul off.
One addition to VicS comments, it gets very hot as you mix it!
One addition to VicS comments, it gets very hot as you mix it!
Its_Only_Money
Well-Known Member
[ QUOTE ]
it gets very hot as you mix it!
[/ QUOTE ]
Sounds like it is probably already banned under several weapons non-proliferation treaties! /forums/images/graemlins/laugh.gif
it gets very hot as you mix it!
[/ QUOTE ]
Sounds like it is probably already banned under several weapons non-proliferation treaties! /forums/images/graemlins/laugh.gif
VicS
Well-Known Member
I did say it got hot! I dont think it will boil like sulphuric acid will though.
What concentration did you use?
Kds you say, correctly, that water will not neutralise it only dilute it. What do you suggest for neutralising (a) splashes on the skin and (b) spillages and the waste once washed off? Citric acid?
What concentration did you use?
Kds you say, correctly, that water will not neutralise it only dilute it. What do you suggest for neutralising (a) splashes on the skin and (b) spillages and the waste once washed off? Citric acid?
pvb
Well-Known Member
Neutralising, and concentration...
Dilunett recommend washing with water & vinegar to neutralise splashes on the skin. For general spillages, lots and lots of water should do the trick.
In terms of concentration, Dilunett is about 17% sodium hydroxide, so that should be an indication if anyone's thinking of making a DIY stripper.
Personally, having used Dilunett, I'd be anxious to try something friendlier next time!
Dilunett recommend washing with water & vinegar to neutralise splashes on the skin. For general spillages, lots and lots of water should do the trick.
In terms of concentration, Dilunett is about 17% sodium hydroxide, so that should be an indication if anyone's thinking of making a DIY stripper.
Personally, having used Dilunett, I'd be anxious to try something friendlier next time!
Vara
Well-Known Member
Sorry didn't mean to minimise risks of caustic solutions,I thought my reference to health and safety might have given a clue!Will be less subtle in future!
For those thinking of using it THIS might be useful.
Yes,you are absolutely right neutralised should be replaced with "made less harmful".
For those thinking of using it THIS might be useful.
Yes,you are absolutely right neutralised should be replaced with "made less harmful".
Kilter
Well-Known Member
[ QUOTE ]
Its been used for years for stripping pine furniture and so on. Cleans drains.
As schoolboys in the chemistry laboratory we were told it takes the skin off your flesh and the flesh off your bones.
I've never tried it for that though. /forums/images/graemlins/smile.gif
[/ QUOTE ]
I used it for cleaning a blocked drain...it worked but in doing so reacted violently, blew back and I received severe burns to one hand and yes it does eat holes in flesh! Required specialist hospital treatment and hurt like hell! So if using it also use the full protective gear.
Its been used for years for stripping pine furniture and so on. Cleans drains.
As schoolboys in the chemistry laboratory we were told it takes the skin off your flesh and the flesh off your bones.
I've never tried it for that though. /forums/images/graemlins/smile.gif
[/ QUOTE ]
I used it for cleaning a blocked drain...it worked but in doing so reacted violently, blew back and I received severe burns to one hand and yes it does eat holes in flesh! Required specialist hospital treatment and hurt like hell! So if using it also use the full protective gear.
ex-Gladys
Well-Known Member
I got a bit of dilunett on my arm last year. Scar has now gone... just... I am aware and will be VERY careful
Birdseye
Well-Known Member
I used this approach to remove the horrible black anodising from the mast on my last boat.
But conc caustic soda is far more damaging to human flesh that, for example, battery acid - not that the latter is something to be treated casually. Cautic will dissolve skin. If you want to dispose of the body of your ex, then caustic would be one way to go. So complete protection is required - goggles, plastic overalls, gloves, masketc with no skin left uncovered since the odd bristle on a brush can flick a gob of something quite a distance. And a running hose or buckets of fresh water so you can rapidly wash off anything that does get through your defenses. Or the next door boat owners dog when it copes round for a pee.
I'm not a safety nazi, bit the opposite if anything. But conc NaOH is dangerous. So dont be casual.
And it will boil water and possible spit if you are daft enough to add water to NaOH rather than the other way round.
But conc caustic soda is far more damaging to human flesh that, for example, battery acid - not that the latter is something to be treated casually. Cautic will dissolve skin. If you want to dispose of the body of your ex, then caustic would be one way to go. So complete protection is required - goggles, plastic overalls, gloves, masketc with no skin left uncovered since the odd bristle on a brush can flick a gob of something quite a distance. And a running hose or buckets of fresh water so you can rapidly wash off anything that does get through your defenses. Or the next door boat owners dog when it copes round for a pee.
I'm not a safety nazi, bit the opposite if anything. But conc NaOH is dangerous. So dont be casual.
And it will boil water and possible spit if you are daft enough to add water to NaOH rather than the other way round.
Pete735
Well-Known Member
[ QUOTE ]
What concentration did you use?
I just followed the instructions on the container - bought from the local hardware shop.
What concentration did you use?
I just followed the instructions on the container - bought from the local hardware shop.
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