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Home > Science > Chemistry   »   purification method for THF

 
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Old May 8, 2008, 03:00 AM
narenscharan
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purification method for THF

i want know about purification method for peroxide content in Tetrahydrofurane.
i have already use 3A & 4A molecular sieve.

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Old May 8, 2008, 07:27 PM   #2  
robkelly2242
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The molecular sieve will only remove water. For small amounts of THF, use the 3A sieve, add to the effluent THF 10g/liter of a mild reducing agent such as ferrous sulfate or cuprous sulfate, distill the mixture IN THE DARK under nitrogen or argon, discard the 1st 10% of the distillate, save the next 80%, store it in the dark under nitrogen or argon, use it immediately. If you want to store it longer, add a fewNaOh pellets to the container.
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