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Qualitative Analysis

Qualitative Analysis

For solutions containing mixtures of different cations, the identity of each cation can be determined by qualitative analysis. This technique involves a series of selective precipitations with different chemical reagents, each reaction producing a characteristic precipitate for a specific group of cations. Metal ions within a group are further separated by varying the pH, heating the mixture to redissolve a precipitate, or adding other reagents to form complex ions.
For instance, group IV...

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Related Experiment Video

Updated: Jul 15, 2025

Efficient Synthesis of All-Carbon Quaternary Centers via the Conjugate Addition of Functionalized Monoorganozinc Bromides

Efficient Synthesis of All-Carbon Quaternary Centers via the Conjugate Addition of Functionalized Monoorganozinc Bromides

Published on: May 26, 2019

Quaternium-26.

Wilbur Johnson¹, Wilma F Bergfeld², Donald V Belsito²

¹Cosmetic Ingredient Review Former Senior Scientific Analyst/Writer.

International Journal of Toxicology

|September 28, 2023

Summary

This summary is machine-generated.

The Expert Panel for Cosmetic Ingredient Safety reviewed new studies on sodium Quaternium-26. They confirmed its safety for cosmetic use at current product concentrations.

Keywords:

Cosmetics Quaternium-26 Safety

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Last Updated: Jul 15, 2025

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Area of Science:

Cosmetic Science
Dermatology
Toxicology

Background:

Sodium Quaternium-26 is a quaternary ammonium compound used in cosmetic products.
Previous safety assessments were conducted in the year 2000.

Purpose of the Study:

To review newly available studies on sodium Quaternium-26.
To reassess the safety of sodium Quaternium-26 based on updated information.

Main Methods:

Literature review of recent scientific studies.
Analysis of updated product types and concentrations of use.

Main Results:

Newly available studies were evaluated.
Updated information on product use and concentrations was considered.

Conclusions:

Sodium Quaternium-26 is safe as a cosmetic ingredient.
Safety is confirmed for the described practices of use and concentration.