Study on the density of ethyl acetate at different temperatures

INTRODUCTION
The density of substances is closely related to the temperature at which they are located. The precise investigation of the density of ethyl acetate at different temperatures is of great significance in many fields such as chemical production and scientific research. This paper aims to systematically investigate the variation law of the density of ethyl acetate at different temperatures.

Experimental materials and methods
1. ** Experimental materials **: Select high-purity ethyl acetate as the research object to ensure the purity of the experimental materials to reduce the interference of impurities on the density measurement.
2. ** Experimental instrument **: Using a high-precision densitometer, its measurement accuracy can reach [specific accuracy value], and it can accurately measure the density of ethyl acetate at different temperatures. At the same time, it is equipped with a constant temperature water bath device, which can precisely control the temperature within the required range, and the temperature control accuracy is [temperature control accuracy value].
3. ** Experimental method **: Place an appropriate amount of ethyl acetate in a container with temperature control, use a constant temperature water bath device to gradually adjust the temperature, starting from [initial temperature], using [temperature interval] as a layer, and then increasing to [termination temperature]. At each set temperature, after the system temperature is stabilized, use a density meter to measure the density of ethyl acetate and record the data.

Experimental results
Through experimental measurements, the density data of ethyl acetate at different temperatures are obtained as follows:
| Temperature (℃) | Density (g/cm ³) |
| ---- | ---- |
| [Specific Temperature 1] | [Corresponding Density 1] |
| [Specific Temperature 2] | [Corresponding Density 2] |
|... |
| [Specific Temperature n] | [Corresponding Density n] |

With temperature as the abscissa and density as the ordinate, a scatter plot can be drawn to visually show the change trend of ethyl acetate density with temperature. It was observed that with the increase of temperature, the density of ethyl acetate generally showed a downward trend.

RESULTS ANALYSIS
From the molecular level, when the temperature increases, the thermal motion of ethyl acetate molecules intensifies, the distance between molecules increases, resulting in a decrease in the number of molecules per unit volume, which in turn decreases the density. At the same time, according to the relevant theory, the density and temperature of the liquid usually satisfy a certain functional relationship. Fitting the experimental data, the function expression of ethyl acetate density and temperature can be obtained as [specific function expression], which can better describe the change law of ethyl acetate density with temperature in the experimental temperature range.

CONCLUSION
This study clarifies the density change of ethyl acetate at different temperatures through experimental measurement. As the temperature increases, the density decreases, and a function expression describing the relationship between the two is obtained. This research result provides important basic data reference for related industrial production and scientific experiments involving ethyl acetate, which is helpful to optimize process parameters, improve production efficiency and experimental accuracy.