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Megatherium
(Hive Bee) 03-31-04 03:26 No 498199 |
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Oxalic acid solubility in ethanol | ||||||
I searched for the solubility of oxalic acid on the internet and found this: http://voh.chem.ucla.edu/vohtar/spring98 1. An organic chemistry lab book gives the following solubility data for oxalic acid (IUPAC name - ethanedioic acid) 9.5 g/100mL of water 23.7 g/100 mL of ethanol 16.9 g/100 mL of ether It is nice to see that oxalic acid dissolves in ethanol, but for setting up some Mannich reaction procedure, I 'd like to know if these figures are accurate. I found this in some basic organic chemistry textbook (Morrison & Boyd, 6th ed., Organic chemistry p 742), which has a funny cartoon on page 474. It goes like this: Donnald duck walks towards his lab table saying: 'If I mix CH2 (edit: methylene, formed by the ultraviolet light photolysis of diazomethane ![]() * He 's talking chemical talk ! * But he knows nothing * about chemicals ! Anyway, the book says (p 742) that the solubility of oxalic acid is 9 g / 100 g H2O at 20 °C. Could someone give me an accurate figure of the solubility of oxalic acid in ethanol (this is my primary interest, because a solution of formaldehyde / amine / ethanol is going to bee dropped slowely into an ethanolic solution of ketone and oxalic acid). |
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Megatherium (Hive Bee) 03-31-04 23:50 No 498340 |
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I guess his ref. was: Post 453799 | ||||||
I guess his ref. was: James W. Zubrick, "The Organic Chem Lab Survival Manual", 4th Ed., John Wiley & Sons, 1997, so the info should be correct. Post 453799 (Rhodium: "Theory of Extraction", Newbee Forum) |
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ning (acetaminophanatic) 04-17-04 07:07 No 501218 |
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Oxalic acid solubility in water | ||||||
Is really, really temperature dependent too. It gets much higher than what you see. I remember calculating that if one were to take a saturated boiling soln. to almost freezing, they would gather in crystals around 90 - 95 % of their acid. I've been chased by both cops and robbers. So what does that make me? |
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