i want potassium nitrate to be get crosslinked to biopolymer..so weather pot.nitrate will be partially dissolve in ethanol or not?if yes den weather crosslinking will be done in partially dissolve solvent?
The solubility of KNO3 in dry ethanol is rather low - about 0.6g/100ml; of course it should increase a bit at higher Temperature, BUT to the best of my knowledge - heating leads to an opaque solution ( and I have no answer: why it happens)
In case of Methanol solubility is higher: ca. 3g/100ml
All this information came from a very old edition of Russian Handbook of Chemistry - but the numbers are correct : many years ago I checked them myself.
dear leonid sir,i have tried to dissolve 0.1g of kno3 in 10ml of methanol but den also kno3 is not dissolved completely...should i increase amount of methanol?
Dear Jahan:
In my 1st response I gave you: 0.6g/100ml - from the Handbook. Basing on this data - I successfully dissolved 0.5g in 100ml of ETHANOL -at RT. It took 5 or 6 hours, but I was in no rush. Thus - I am surprised - why you could not reproduce this experiment.
Oh, now I saw that you used METHANOL as the solvent !!!!!!, which ability to dissolve KNO3 is already much higher than that of Ethanol (?!).
If I were you - I would continue my attempts - by increasing the amounts of BOTH i.e. of salt and of alcohol; then filtering out the insoluble portion; and checking - for examle - by evaporation - how much of KNO3 - you were able to really dissolve.
Best Regards, Leonid
I have tried to separate a mixture of urea and KNO3 by exploring their differences in solubility in hot boiling ethanol being that urea is soluble in hot ethanol while KNO3 is not. This did not work out well. Please what is the best way to achieve that.?
I. On the matter of precipitation of the potassium nitrate assisted by methanol addition ― cf.: J.Y. Johnson, "Verfahren zur gewinnung von alkalisalpeter und chlorammonium aus alkalichlorid und ammonnitrat", German Patent 406,413, Nov. 21, 1924.
II. On the matter of potassium nitrate solubility in water + ethanol (or also with HCl); cf.: Article Alcohol, Water and Potassium Nitrate
Article Potassium Nitrate Solubility in (Water + Ethanol) Mixed Solv...
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