Furoner
regular
Reged: 17/12/2007
Posts: 37
Loc: Ampolla, mid-way BCN -VLC
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Having followed the oxalic acid thread am now ready to lift out boat and wipe its bottom- will our chemist friends pls advise strength (or otherwise) of dilution with water for sponging on and with a hand sprayer. Have read the safety leaflet and will comply....seems nasty stuff.
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Captainslarty
regular
Reged: 12/08/2007
Posts: 2012
Loc: Currently La Coruna Spain
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I mix around 2 table spoons in a medium coffee jar size - with warm water - seems to work fine..
See if you can get some borax for neautralsing - or copius amounts of water -wear eye protection and gloves if working upwards - advisable anytime though. 3 tablespoons in the same water container (Jar) works well for teak - never needed anything stronger.
Joe
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PM me for info re SSB's etc. Bought, sold, repaired, fitted and optimised.
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Captainslarty
regular
Reged: 12/08/2007
Posts: 2012
Loc: Currently La Coruna Spain
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Oh, sorry, must add - what exactly are you trying to clean 'under' the boat - ?? seems a strange use for oxalyc ?
Joe
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PM me for info re SSB's etc. Bought, sold, repaired, fitted and optimised.
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VicS
regular
Reged: 13/07/2002
Posts: 8386
Loc: Home: Kent. Boat: Chichester
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AG Woodcare suggest 2 - 4 tablespoons in 1 pint of hot water (For wood bleaching)
You might as well make it more concentrated rather than less, even saturated many suggest.
You can thicken it with wallpaper paste so that it clings rather than simply running off onto the ground.
Ammonia or borax is the recommended solution for neutralising it an wood and stopping the bleaching action but on grp or spills just use washing soda or bicarb or just wash away with water. Bicarb or just water on you.
Take care but it is not as nasty as many things I could name. I remember the days when we pipetted a near saturated solution routinley by mouth!
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Old Chemists never die, they just fail to react
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VicS
regular
Reged: 13/07/2002
Posts: 8386
Loc: Home: Kent. Boat: Chichester
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Quote:
seems a strange use for oxalyc ?
It puzzles me too but oxalic acid seems to have gain the reputation as the magic cleaner for everything. The perfect solution for iron (rust) stains and the brown stain around the waterline, not forgetting its traditional use for wood bleaching, but every thing else ????????
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Old Chemists never die, they just fail to react
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Furoner
regular
Reged: 17/12/2007
Posts: 37
Loc: Ampolla, mid-way BCN -VLC
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Thanks chaps; all seems clear. Didn't want to mix it too strong without knowing consequences. Tks for info re bicarb, didn't know that and can get it easily. Not using it under the boat but intend to clean waterline and hull prior new antifoul.
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sparkie
regular
Reged: 15/10/2002
Posts: 233
Loc: Me: Chester. Boat: west Wales
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Use Harpic blue lav cleaner instead. Just as effective and a lot easier and safer.
Cheers
Sparkie
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