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The Norwegian Technical Diving Society used it (combination of air and CO2) in the early 90's, it may be detailed in the Premier Issue of Immersed. I personally do remember them saying it made their skin itch alot so they abandoned it. Rich Lesperance wrote: > Jozef, > > Without digging out my chem notes from last semester <g>, the carbonic acid > sets up an 'equilibrium', in that some of it will decompose to CO2 & water, > but some will remain as carbonic acid. > > If the gas in your suit is pure CO2, the acid side of the equilibrium will > be favored, meaning yes, any moisture in your suit will become acidified. > > You have a good point about the condensation, but I suspect enough moisture > will remain on the skin for the acid to have an effect. Not to mention, do I > really want to coat the inside of my drysuit with an acid on every dive? > > Yes, cola beverages are acidified (as far as I know - by the same method - > ie, dissolving CO2 gas in the fluid), but this is dwarfed by your natural > stomach acidity, so comparing the two doesn;t really help. > > Any professional chemists out there (no, Skip, sit down. Not you <g>.) feel > free to jump in if I'm wrong.... > > Rich L > > ----- Original Message ----- > From: Gliviak, Jozef <Jozef.Gliviak@co*.co*> > To: 'TECH LIST' <techdiver@aquanaut.com> > Sent: Thursday, February 17, 2000 8:49 AM > Subject: RE: CO2 for dry suit inflation > > > Hello, > > > > >>CO2 will combine with moisture from sweat to form carbonic acid. This > > will > > >>eat your thinsulate and cause irritation to your skin. > > > > Did someone actually experienced this ? I'd love to hear first hand story. > > May be I'll try myself. > > As far as I know: > > - Carbonic acid (H2CO3) is one of the weakest acids and it is quickly > > decomposed to H2O and CO2. > > - Gas in your suit is very dry which will cause that your skin is quicky > > dried when sweated. > > - Water vapour condenses on place with highest temperature gradient - > which > > is shell of suit, not the skin > > - We actually like to drink this acid which is in any soft drink which is > > carbonated and it didn't burn our throat > > So I'm not sure if acid is the cause why CO2 is not widely used. > > > > > > Regards > > > > Jozef Gliviak > > Slovakia > > > > -- > > Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. > > Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'. > > -- > Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. > Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'. -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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