Solubility Parameter Formula:
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Definition: Solubility Parameter is a numerical value that indicates the relative solvency behavior of a specific solvent.
Purpose: It helps predict whether one material will dissolve in another and form a solution.
The calculator uses the formula:
Where:
Explanation: The square root of the ratio of heat of vaporization to volume gives the solubility parameter.
Details: This parameter is crucial in polymer science, coatings, adhesives, and formulation chemistry to predict material compatibility.
Tips: Enter the heat of vaporization in joules and volume in cubic meters. All values must be > 0.
Q1: What units are used for solubility parameter?
A: The solubility parameter is typically expressed in √(J/m³) or (cal/cm³)½ (1 cal/cm³ = 2.0455×106 J/m³).
Q2: What's a typical range for solubility parameters?
A: For common solvents, values typically range from 14-24 (MPa)½ or 7-12 (cal/cm³)½.
Q3: How accurate is this calculation for polar solvents?
A: This formula works best for nonpolar solvents. For polar solvents, additional terms for polar and hydrogen bonding contributions are needed.
Q4: Where can I find heat of vaporization values?
A: Heat of vaporization values can be found in chemical handbooks, material safety data sheets (MSDS), or thermodynamic databases.
Q5: How is volume determined for this calculation?
A: Volume is typically the molar volume of the solvent at the temperature of interest.