Glyceryl Stearate SE (GMSE) Chemistry

So I work with GMSE (commonly referred to as Glyceryl Monostearate Self Emulsifying, although I believe the correct INCI is Glyceryl Stearate off the top of my head) on rare occasion and although it is not my favorite emulsifier, I would like to know a bit more about it from shared experiences. In particular I have recently read that several factors effect its performance;

- pH (5.5-9)
- EDTA (not good)
- Percent water (high is preferred)

Can anyone validate these from their personal experience? Are there additional factors that perhaps should also be considered?

Thank you for your advice and I look forward to your suggestions.
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