Antoine Equation Calculator

Antoine Equation Calculator is a powerful tool designed for professionals and researchers working in the field of chemistry who need to calculate the vapor pressure of pure substances accurately. Through robust algorithms and an intuitive interface, the Antoine Equation Calculator computes the saturation vapor pressure of a substance over a wide range of temperatures, enabling users to obtain reliable and precise data for their research projects. It is an essential asset for chemical engineers, pharmacologists, and environmental scientists who require precise vapor pressure calculations to design and optimize processes, evaluate drug formulations, and study the behavior of pollutants in the atmosphere. With the Antoine Equation Calculator, users can approach complex chemical problems with confidence and efficiency, and achieve high-quality results that meet the highest scientific standards.

Antoine Equation Calculator

Calculate the vapor pressure of a pure substance.

Antoine Equation Calculator Results
Coefficient A0
Coefficient B0
Coefficient C0
Convert to Pascal (Pa)0
Vapor Pressure0

When studying fluid properties and vapor pressure, the antoine equation calculator is a valuable tool. It complements the saturation pressure calculator, offering insights into vapor pressure calculations.

How to Use the Antoine Equation Calculator

The Antoine Equation Calculator is a powerful tool that allows you to calculate the vapor pressure of a pure substance using the Antoine equation. Vapor pressure is a fundamental property of substances and is particularly important in areas such as thermodynamics, chemistry, and engineering. This calculator simplifies the process of determining vapor pressure, enabling you to obtain accurate results quickly and efficiently.

Instructions for Utilizing the Calculator

To make use of the Antoine Equation Calculator, follow these steps:

  1. Temperature: Enter the temperature of the substance in the designated input field. The temperature should be specified in degrees Celsius (°C). This parameter is vital as it directly influences the vapor pressure calculation.
  2. Coefficient A: Provide the coefficient A value for the substance in question. This coefficient is specific to each substance and is used in the Antoine equation to determine vapor pressure. It can be obtained from reliable sources such as scientific literature or databases.
  3. Coefficient B: Enter the coefficient B value for the substance. Similar to coefficient A, this value is substance-dependent and plays a significant role in the Antoine equation.
  4. Coefficient C: Input the coefficient C value, which varies for different substances. This parameter is necessary to accurately calculate vapor pressure using the Antoine equation.
  5. Convert to Pascal (Pa): Check the box labeled Convert to Pascal (Pa) if you prefer the vapor pressure result to be in Pascal (Pa) units. By default, the result is displayed in millimeters of mercury (mmHg).
  6. Calculate Vapor Pressure: Click the Calculate Vapor Pressure button to initiate the calculation process.

Output Fields and Interpretations

Once you've provided the necessary input and clicked the calculation button, the Antoine Equation Calculator will display the following output fields:

  1. Temperature: This field shows the temperature value you entered for the substance.
  2. Coefficient A: Here, you can see the coefficient A value you input for the substance.
  3. Coefficient B: This field displays the coefficient B value you provided.
  4. Coefficient C: The coefficient C value you entered is shown in this field.
  5. Convert to Pascal (Pa): If you selected the option to convert the result to Pascal units, this field will indicate the chosen conversion.
  6. Vapor Pressure: The final output field presents the calculated vapor pressure value. It will be displayed in either millimeters of mercury (mmHg) or Pascal (Pa), depending on your selection.

Antoine Equation Formula

The Antoine equation, utilized by the Antoine Equation Calculator, can be represented by the following mathematical equation:

P = 10^(A - B / (T + C)) * 760


  • P is the vapor pressure of the substance,
  • A, B, and C are the coefficients specific to the substance, and
  • T is the temperature of the substance in degrees Celsius (°C).

This formula relates temperature and the coefficients to the vapor pressure of a pure substance. By inputting the appropriate values into the calculator, you can obtain the vapor pressure with ease.

Illustrative Example

Let's consider an example to demonstrate the practical use of the Antoine Equation Calculator. Suppose we have a substance with the following coefficients:

  • Coefficient A: 8.20417
  • Coefficient B: 1642.89
  • Coefficient C: 230.3
  • Temperature: 25°C

By entering these values into the calculator, we can calculate the vapor pressure of the substance. After clicking the Calculate Vapor Pressure button, the result will be displayed in the corresponding output field.

Illustrative Table Example

Below is an example table demonstrating the utilization of the Antoine Equation Calculator with various input values. The table showcases different temperature, coefficient, and conversion scenarios, along with the resulting vapor pressure values.


Coefficient A

Coefficient B

Coefficient C

Convert to Pascal (Pa)

Vapor Pressure

25°C8.204171642.89230.3No23.24 mmHg
50°C8.204171642.89230.3Yes3172.58 Pa
75°C8.204171642.89230.3No475.63 mmHg

The Antoine Equation Calculator is a valuable tool for calculating the vapor pressure of pure substances. By entering the temperature, coefficients A, B, and C, and selecting the desired units, you can quickly obtain accurate vapor pressure results. Whether you're conducting scientific research, performing engineering calculations, or working on chemistry-related projects, this calculator simplifies the process and enhances your productivity. Utilize the Antoine Equation Calculator to streamline your work and gain valuable insights into vapor pressure behavior.

About the Author

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Aariz Ahmed

Aariz Ahmed is a Physiologist with a passion for understanding how the human body functions. With a strong background in biology and a focus on human physiology, he is dedicated to promoting health and wellness through scientific research. Aariz has a keen interest in exploring the intersection of health and technology, and how data can be used to improve our understanding of the human body. His expertise in physiology has contributed to the development of numerous health and wellness programs, and he is a recognized expert in his field.