1. What is Solubility Parameter?

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 the degree of their mutual solubility.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( δ \) — Solubility Parameter (√J/m³)
• \( γ \) — Surface Tension of Fluid (N/m)
• \( V_m \) — Molar Volume (m³/mol)

Explanation: The formula relates surface tension and molar volume to predict solubility behavior through the solubility parameter.

3. Importance of Solubility Parameter

Details: Solubility parameters are crucial in material science, polymer chemistry, and formulation development to predict miscibility and compatibility of materials.

4. Using the Calculator

Tips: Enter the surface tension in N/m (default 0.073 for water) and molar volume in m³/mol (default 22.4 for ideal gas at STP). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What are typical values for solubility parameters?
A: Water has δ ≈ 23.4 (√J/m³), while organic solvents range from 14-20 (√J/m³).

Q2: How accurate is this estimation method?
A: It provides a reasonable estimate but may vary ±10% from experimental values for complex molecules.

Q3: When would I need to calculate solubility parameter?
A: When formulating solutions, predicting polymer solubility, or designing solvent systems.

Q4: What's the relationship between surface tension and solubility?
A: Higher surface tension generally correlates with higher solubility parameter values.

Q5: Can I use this for mixtures?
A: For mixtures, calculate each component separately then use appropriate mixing rules.