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Under typical distillation conditions, ethanol can only be purified to 95% with 5% water remaining. There are additional techniques that can be used to remove the remaining water to make it anhydrous (no water). Do not confuse 95% alcohol with 95% denatured alcohol. In denatured alcohol the remaining 5% is composed of other alcohol impurities like methanol, propanol, and butanol, to name a few.
Denatured alcohol.Methylated spirits is a mixture of roughly 95% methanol and 5% ethanol.
methanol is liquid
Dichloromethane (DCM), or methylene chloride is an organic solvent with a very low vapor pressure. Therefore, to dry it one can simply leave it out at room temperature and it will quickly evaporate.
methanol
A distillation would probably work pretty well.
Under typical distillation conditions, ethanol can only be purified to 95% with 5% water remaining. There are additional techniques that can be used to remove the remaining water to make it anhydrous (no water). Do not confuse 95% alcohol with 95% denatured alcohol. In denatured alcohol the remaining 5% is composed of other alcohol impurities like methanol, propanol, and butanol, to name a few.
Methanol, charcoal, acetic acid, acetone, and wood tarSee also related link.
By fractional distillation, methanol boils at about 61 Celsius while ethanol at 78.5 Celsius.
assuming it's trace ammonia in lots of methanol, you can probably just heat the methanol to boiling and that should get rid of all the ammonia. molecular sieves (size 3 angstroms) would also probably work. if it's more than a trace amount, you can go for distillation.
Denatured alcohol.Methylated spirits is a mixture of roughly 95% methanol and 5% ethanol.
Acetone cannot be completely removed from acetone-methanol mixtures by distillation because of the presence of the minimum boiling azeotrope. Acetone can be readily separated from methanol by using extractive distillation in which the extractive agent is a higher boiling oxygenated, nitrogenous and/or sulfur-containing organic compound or a mixture of two or more of these. Typical examples of effective agents are: Glycerine, 1,5-Pentanediol, Dimethylsulfoxide, n-Hexanol, Dioctyl phthalate and N,N-Dimethylacetamide.
A heterogeneous mixture is a sum of pure substances which are not soluble in each other while a homogeneous mixture is a mixture wherein its constituents do not appear separately. Methanol is an example of a homogeneous mixture.
methanol is liquid
This type of mixture is distilled by extractive distillation method. First, methanoic mixture is separated by feeding the required rate of water in the extractor with the counter-current of these two liquids. Later on GC is done for methanol content in the organic layer and if it comes below the required level, it is taken for rectificaton in the column.
Methanol is an alcohol and consists of carbon,hydrogen and oxygen its formula is CH3OH
Dichloromethane (DCM), or methylene chloride is an organic solvent with a very low vapor pressure. Therefore, to dry it one can simply leave it out at room temperature and it will quickly evaporate.