Dilution Ratios for Glycolic Acid 70%
Question
I have Glycolic Acid 70% (25g syringe) that I bought a while ago but haven't used. I remember there was a ratio guide, but I can't find it now. I would like to ask:
1. What is the ratio of Glycolic Acid 70% to water needed to achieve concentrations from 10% to 90%?
Answer
Dilution Ratios for Glycolic Acid 70%
To dilute Glycolic Acid 70% to lower concentrations, you can use the following ratios of Glycolic Acid 70% solution to water (by weight or volume, assuming the density difference is negligible for practical purposes in home formulations):
- To get 10% Glycolic Acid: Mix approximately 14.3 parts of Glycolic Acid 70% with 85.7 parts of water.
- To get 20% Glycolic Acid: Mix approximately 28.6 parts of Glycolic Acid 70% with 71.4 parts of water.
- To get 30% Glycolic Acid: Mix approximately 42.9 parts of Glycolic Acid 70% with 57.1 parts of water.
- To get 40% Glycolic Acid: Mix approximately 57.1 parts of Glycolic Acid 70% with 42.9 parts of water.
- To get 50% Glycolic Acid: Mix approximately 71.4 parts of Glycolic Acid 70% with 28.6 parts of water.
- To get 60% Glycolic Acid: Mix approximately 85.7 parts of Glycolic Acid 70% with 14.3 parts of water.
- To get 70% Glycolic Acid: Use the solution as is (100% Glycolic Acid 70% solution, 0% water).
Important Note: It is not possible to achieve concentrations of 80% or 90% Glycolic Acid by diluting a 70% solution with water, as water will always decrease the concentration.
Always handle concentrated Glycolic Acid with caution, wearing appropriate protective gear, and ensure proper ventilation.