Guest guest Posted November 30, 2007 Report Share Posted November 30, 2007 > Re: [MDI_News] Volumes and weights > > Sodium chlorite has a molecular weight of 90.44 citric acid has a > molecular weight of 192.14 > > The product is Chlorous acid: HClO2 > > Thus one molecule of sodium chlorite reacts with one molecule of > citric acid. Thus the weight ratio for 100% reaction of each chemical > would be > 192.14/90.44 = 2.125, That is one gram of Sodium Chlorite to > 2.12 grams of citric acid. Since the MMS is 28% concentration of > sodium chlorite, then for each gram of MMS you need to add .6 gram of > citric acid. > > Now citric acid has a density of 1.54, and if we assume that it has a > packing density of 80%, that would give 1.23 grams/cc. If you mix > that to 10% by volume, it would give you around 12.3% by weight, or > about .123 grams/cc. > > So to mix so that you have equal amounts of each (at the molecular > level) requires approximately, 6/.123 = 4.88 times as much 10% by > VOLUME citric acid solution as MMS solution.. This is very close to > the 5:1 given by Humble. > > If you want more precise measurements, then use the weights given above. > > Marshall > > > > Case wrote: > > > > I'm wondering about the instructions for activating MMS. > > > > Just as the instructions for the ratio of drops does not > clarify the > > size of drops (although the 1:5 ratio is the constant from > which one > > can make ones own calculations), so are the instructions for > > activators extremely ambiguous. > > > > For a start, the instructions for making a 10% solution of > citric acid > > enjoin one to add 9 spoonfuls of water to 1 spoonful of citric acid > > powder. > > > > This is not what pharmacists would call a 10% solution, as > ratios of > > chemicals are generally expressed in weight, not volume. > In the case > > of citric acid, this could be important, inasmuch as it can be > > purchased either as relatively coarse crystals (like > refined sugar) or > > as a finer powder (like confectioner's sugar). Spoonfuls > of these two > > would have different masses, and chances are that neither > of them is > > equal in mass to a spoonful of water. > > > > Equally slapdash are the recommendations for lime,lemon juice and > > vinegar, all of which are available in widely varying > concentrations > > of acid content. > > > > Is there anyone else who feels that some standardisation > and precision > > might be a good idea? > > > > Among the answers you needn't bother to send are: > > > > 1. Dr. Humble didn't indicate that it matters, so it > doesn't 2. Go > > find out for yourself...somewhere else. > > 3. The way I'm already doing it works for me, and that's all that > > matters. > > 4. Just try to err on the side of too much acid, and all > will be well. > > > > Quote Link to comment Share on other sites More sharing options...
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