Ethanol, in its diluted and aqueous solution form has a sweet flavor while as a concentrated solution it has a burning taste. The melting point of ethanol is -114.1 degrees centigrade and the density of ethanol is 0.789 g/ml. at twenty degrees centigrade. Ethanol that is derived from the fermentation process has varied degrees of concentration that ranges from a few percent to approximately 14 percent and above this percentage it destroys the zymase enzyme and therefore there is no more fermentation possible.
Ethanol Should Not Contain Water
Producers of ethanol need to keep tabs on the density of ethanol as well as water content of the ethanol stream to ensure quality. In case the ethanol contains significant quantities of water and even five percent would qualify as a significant amount, it would, through its molecular structure, act more like water and less like ethanol especially when mixed with petrol that is a hydrocarbon solution. Wet ethanol can be mixed with petrol and upon mixing, the ethanol will split from the petrol and settle at the bottom of the container and the petrol will rise to the top.
To measure the density of ethanol one may use an alcohol monitoring system from Anton Paar which is very accurate density transducer that can measure density non-stop as well as read the percentage of water and also concentration of alcohol. This monitoring of density of ethanol system comprises of a density transducer as well as an MPDS evaluation unit and it gives highly accurate as well as reliable readings that help in ensuring quality control as well as monitoring of the product.
Ethanol has a greater energy density as compared with methanol and its density is less than that of water. The energy density of ethanol is not as much as that of gasoline and is merely 64 percent and so takes one hundred and fifty times the amount of ethanol to give the same amount of energy as would be produced by gasoline. This may result in higher prices being paid for ethanol as compared to gasoline prices. Put realistically, one would require four gallons of ethanol to conserve one gallon of gasoline. But, because the energy density of ethanol is less per gallon and one requires one hundred and fifty percent more ethanol, it actually works out to six gallons of ethanol instead of four.