Hello everyone, welcome! Our news today is for a clearer understanding of that, Why is absolute ethanol used rather than 95 ethanol?
First of all, we need to understand what absolute ethanol.
Absolute ethanol is 100% pure ethanol. It is a flammable, volatile, colorless and transparent liquid at normal temperature and pressure. It is low toxicity and pure liquid is not drinkable directly; it has a special fragrance and is slightly irritating; slightly sweet and accompanied by a pungent spicy taste. It is flammable, its vapor can form explosive mixture with air, and can be miscible with water in any ratio.
Therefore, if absolute ethanol is used in the reaction, it cannot be replaced, because the water content of absolute ethanol is relatively small, and the water content of 95% ethanol is relatively large, and some reactions are affected by the excessive water content of ethanol, which may cause the reaction to fail. If the ethanol required for some experiments is lower, the absolute ethanol needs to be prepared from absolute ethanol.
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