Using Disodium EDTA: Percentage and Mixing
Asked by: nat_ultra
On: November 19, 2015
Product Type:
Cosmetics
Question
How to use Disodium EDTA in a formulation? What is the recommended percentage, and how should it be mixed?
Answer
Based on the previous conversation:
- EDTA Percentage Calculation: The staff recommends calculating 0.2% of the water content for accuracy. However, they also mentioned that using 0.1% or 0.3% is acceptable and the exact calculation basis (water or total formula) is not critical.
- Mixing Order: Disodium EDTA should be mixed with water first until dissolved before adding other ingredients, including active ingredients.
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