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Protein Salting-Out Precipitation (Ammonium Sulfate Cohn Equation) Calculator

Easily calculate and compute protein salting-out precipitation (ammonium sulfate cohn equation) calculator with accurate equations, live formulas, and expert guidance.

Slope constant Ks in Cohn log solubility equation.

Calculated Result
6.54 kg (NH₄)₂SO₄

Salt Required

Salt Required

6.54 kg (NH₄)₂SO₄

Solid Ammonium Sulfate Required Kg

6.54

Protein Solubility Fold Reduction

437

Ionic Strength Increase Delta M

1.6

Salting Out Mechanism Note

Kosmotropic sulfate ions strip protein hydration shells, exposing hydrophobic patches that aggregate and precipitate out.

6.54 — kg (NH₄)₂SO₄

Calculation Breakdown

  1. Applied FormulaCalculates the mass of solid ammonium sulfate required to reach a target saturation cut and predicts fold solubility drop using the classic Cohn equation.\log_{10} S_{\text{protein}} = \beta - K_s I, \quad g_{\text{salt}} = \frac{533 \, V (S_2 - S_1)}{4.1 - 0.3 S_2}

Ammonium Sulfate Salting-Out Metric Output

Interactive visualization based on your current inputs

Calculated Value
0.01.63.34.96.5Salt Required

What Is the Protein Salting-Out Precipitation (Ammonium Sulfate Cohn Equation) Calculator?

This tool computes protein salting-out precipitation (ammonium sulfate cohn equation) calculator with high precision arithmetic.

How Does the Protein Salting-Out Precipitation (Ammonium Sulfate Cohn Equation) Calculator Work?

Calculates the mass of solid ammonium sulfate required to reach a target saturation cut and predicts fold solubility drop using the classic Cohn equation.

Protein Salting-Out Precipitation (Ammonium Sulfate Cohn Equation) Calculator Formula & Variables

The core mathematical equation utilized by this calculator is expressed as:

log⁡10Sprotein=β−KsI,gsalt=533 V(S2−S1)4.1−0.3S2\log_{10} S_{\text{protein}} = \beta - K_s I, \quad g_{\text{salt}} = \frac{533 \, V (S_2 - S_1)}{4.1 - 0.3 S_2}

Calculates the mass of solid ammonium sulfate required to reach a target saturation cut and predicts fold solubility drop using the classic Cohn equation.

How to Use the Protein Salting-Out Precipitation (Ammonium Sulfate Cohn Equation) Calculator

  1. Enter your parameters into the designated input fields to calculate the result immediately.

Step-by-Step Example Calculation

Protein Salting-Out Precipitation (Ammonium Sulfate Cohn Equation) Calculator Example

Input Values:

currentSaltMolarityM:1.2
targetSaltMolarityM:2.8
initialSolutionVolumeLiters:25
cohnSaltingOutConstantKs:1.65
Worked Steps: Sample evaluation based on standard reference conditions.

Understanding Your Result

The calculated primary figure indicates the optimal or required kg (NH₄)₂SO₄.

Factors That Affect the Result

  • Measurement tolerances, operational variance, and real-world conditions.

When Should You Use This Calculator?

  • Everyday budgeting, technical homework, professional estimation, and household projects.

Assumptions & Limitations

  • Assumes standard atmospheric or environmental parameters unless specified.

Frequently Asked Questions

Calculation Accuracy & Reference Note

Double-precision IEEE 754 arithmetic with validated empirical constants.

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