Here is everything you need to know about ethanol density expressed in grams per milliliter. At standard laboratory temperature (20°C or 68°F), the density of absolute (100%) ethanol is:
| Temperature (°C) | Density of 100% Ethanol (g/mL) | | :--- | :--- | | 15°C (59°F) | 0.7935 | | | 0.7893 | | 25°C (77°F) | 0.7852 | | 30°C (86°F) | 0.7810 | Rule of thumb: For every 1°C increase above 20°C, density decreases by approximately 0.0008 g/mL. The Ethanol-Water Paradox (Non-Linear Behavior) Unlike ideal liquids, when you mix ethanol and water, the volume contracts . This means the density of a 50% ethanol solution is not the average of 0.789 and 1.000. densidad etanol g ml
For most practical calculations—like stoichiometry or solution preparation—this is rounded to . Why Temperature Changes Everything Ethanol expands and contracts with heat more dramatically than water. As temperature rises, the density drops. Here is everything you need to know about
If you are working in a chemistry lab, brewing beer, formulating perfumes, or blending biofuels, one number is critical: the density of ethanol . But simply stating "0.789 g/mL" isn't the full story. Density is a slave to temperature and purity. This means the density of a 50% ethanol