Ethanol

[lukman143]

Hi,

Kindly ask your help:
How to differenciate without analysis between pure ethanol and ethanol with additive?

thanks for your help.

Lukman

[hwguy]

the easyest ways i can think of would be smell and maybe specific gravity. Assuming the additive is easy to detect.

[mosara]

additives effect the odor and color as well as the effectivenes of that ethanol in addition to the change in the bioling point

[kristoph]

Depending on the additive it may show up in an IR.

[RobJim]

Checking the boiling point might work. Pure substances boil at lower temperatures than mixtures.

[mr.chemistry]

also u can use the hydrometer to measure its density.
it will be different.
adding to its smell. it may be changed