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Crystallization Problem
Hi, I made a simple water-based solution and the crystallization is observed after about 1 week. In the solution, the tiny particles (like dust) appear. Do you know what happend?
Here is formula:
1, Water
EDTA.2Na: 0.1
Sodium Cocoamphoacetate: 2
2, Fragrance: 0.2
Liceryl 12 (INCI: Glyceryl Linoleate (and) PEG-12 Oleate): 0.6
3, Saliguard EHGP: 0.6
Propylene Glycol: 4 -
5 Replies
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Mystery there. Nothing jumps out at me and everything appears to be miscible. Perhaps add a bit more amphoteric and see what occurs. That is the hydrotrope here.
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What’s the pH and did you put it (accidentally) in the fridge?Else, nothing suspicious. -
Pharma said:What’s the pH and did you put it (accidentally) in the fridge?Else, nothing suspicious.
The pH is about 7-7.2
I put 1 sample in room temperature and another in incubator (45 degree C).
Both have crystallization after 5-7 days -
@1501 Maybe that level of sodium cocoamphoacetate might not be enough to keep some of your “oils” soluble. Can you try increasing it, replacing it by Laureth-7 or 9, or adding a solubilizer?
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Weird…Do a knock-out test.
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