AminoWash Precipitation in Liquid Soap Formulation
Question
I am using AminoWash dissolved in water to make liquid soap. Even when using Disodium EDTA > 0.1%, it still precipitates and separates, and the solution is not homogeneous. I would like to know the technique for mixing AminoWash to prevent precipitation. Thank you.
Answer
Based on the information for AminoWash (Sodium Lauroyl Glutamate), it is a water-soluble ingredient and the product description states that using 0.1% Disodium EDTA is recommended to help prevent it from solidifying or precipitating. You mentioned you are already using more than 0.1% Disodium EDTA, but still experiencing precipitation and separation.
This suggests that other factors might be contributing to the issue. While AminoWash is soluble in water, the concentration used, the mixing method, or interactions with other ingredients in your specific formulation could be the cause.
Here are some techniques to try:
- Proper Dissolution: Add the AminoWash powder slowly to the water phase while stirring continuously. Ensure it is fully dissolved before adding other ingredients. Gentle heating might sometimes help dissolution, but avoid excessive heat.
- Consider Thickeners: The product description lists several recommended thickeners for formulas using AminoWash. While their primary role is thickening, they can also help stabilize the overall solution and prevent separation or precipitation. Consider using one of these:
- SugarThick™
- ClearClean™
- Xanthan Gum
- EasyThick™
- A combination of Mild-Wash™, Coco-Foam™, and Flora Foam™
- Check Water Quality: Using distilled or deionized water instead of tap water can sometimes prevent precipitation caused by minerals in hard water.
- Review the Full Formula: Examine all ingredients in your formulation. Some ingredients might be incompatible with Sodium Lauroyl Glutamate or affect its solubility and stability.
By ensuring proper mixing, potentially incorporating a suitable thickener for stability, and checking other formula components and water quality, you may be able to prevent the precipitation and achieve a homogeneous liquid soap.
