Alternative Glycols for Dissolving Pure-Magnolol
Question
Pure-Magnolol's description states that the formula must contain at least 3-5% Glycerin to aid dissolution.
Can Pure-Magnolol be dissolved if the formula does not contain Glycerin but uses other Glycols instead, such as Ethoxydiglycol or 1,3 Propanediol?
Or must it be Glycerin only?
If other Glycols can dissolve it, what percentage should be used? Should it be the same percentage as Glycerin (3-5%)?
Answer
Based on the product descriptions, both Ethoxydiglycol and 1,3 Propanediol are described as effective solvents and can likely be used to help dissolve or disperse Pure-Magnolol in your formulation, similar to Glycerin.
Here's a breakdown:
- Pure-Magnolol (Magnolia Extract): The description indicates it can be dispersed in water or oil.
- Glycerin: Acts as a solvent and is soluble in water. The product information you referenced suggests 3-5% helps dissolve Magnolol.
- Ethoxydiglycol: This is a strong solvent and carrier, soluble in water, ethanol, glycols, and natural oils. Its ability to dissolve various substances and its solubility in oils make it a suitable candidate for dissolving Magnolol. The typical usage rate is 1-10%, but note there are specific regulatory limits (e.g., max 2.6% for leave-on products).
- 1,3 Propanediol: This ingredient can be used as a direct replacement for Propylene Glycol, other glycols, and Glycerin, acting as a solvent. Its properties suggest it can also effectively dissolve substances that Glycerin or other glycols would. The typical usage rate is 1-20%.
Therefore, you can likely use Ethoxydiglycol or 1,3 Propanediol instead of Glycerin. You could start by trying a percentage in the 3-5% range, similar to the Glycerin recommendation. However, since their solvent properties can differ slightly, you might need to adjust the percentage within their recommended usage ranges (up to 10% for Ethoxydiglycol, respecting regulatory limits; up to 20% for 1,3 Propanediol) to achieve full dissolution in your specific formula. It is always recommended to perform a small-scale test to confirm solubility and stability in your final product.
Related Products Mentioned
Ethoxydiglycol (e.q. Transcutol)
Glycerin (USP/Food Grade)