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Any thoughts about GMS o/w
This Glyceryl stearate has o/w written in front of it’s name. Any thoughts on what does it mean.
The seller has no idea as he is just a trader.
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18 Replies
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Is it an oil in water emulsifier?
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@Aziz it was supposed to be Glyceryl stearate which is w/o. So what does this o/w mean here?
Is this the se (self emulsifying) version? -
I thought it was just a general self emulsifier!!
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Yeah, it should be Water in Oil. Meaning it’s primary emulsifier for water in oil emulsions (It has low HLB ~5.
, however it can be used as co-emulsifier for O/W emulsion or as a thickener. I don’t see any “SE”, that would indicate that it’s self-emulsifying. A note, Glycerol Monostearate is the name, but its INCI name is Glyceryl Stearate.
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@”Dr Catherine Pratt” @Paprik
I made some samples from it to find out what it is.
First I made a sample with Stearamidopropyl Dimethylamine and it didn’t even make a lotion.
SPDMA %2
This emulsifier %3Second sample made a good looking cream and is completely stable since yesterday. No other thickner or stabilizer used.
Petrolatum %5
Vegetable oil %1
This emulsifier %6Does this mean it GMS se?
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What do they claim it is on the documentation? They should have at least listed a CAS #. That would tell you right away. -
@Aziz that has confused me too.
It doesn’t have seIs has o/w written instead of w/oI have purchased it from a trader and he doesn’t know this technical parts of it.
I don’t think that it may be a printing mistake -
@Microformulation in most of eastern countries they don’t do a lot of documentations for these small purchases especially if it is from a reseller. The cas no is not mentioned on it. I did email the seller after you mentioned it and am waiting for his answer if he knows.
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Abdullah said:@Microformulation in most of eastern countries they don’t do a lot of documentations for these small purchases especially if it is from a reseller. The cas no is not mentioned on it. I did email the seller after you mentioned it and am waiting for his answer if he knows.Now you can see why we insist on these documents. It would be a simple issue.The HLB values are different.
Glyceryl
Stearate3.8 Glyceryl Stearate SE 5.8 -
https://www.fineorganics.com/additives-for-cosmetics-and-pharma/finester-glyceryl-stearate
They’re from India.
They have different CAS from Glyceryl Stearate / Glyceryl Monostearate the one from Germany. -
@Microformulation they said the CAS # is 31566-31-1.
If the HLB of GMS se is 5.8, does it make o/w emulsion or w/o emulsion if used alone?
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@Pattsi thanks a lot
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Abdullah said:@Microformulation they said the CAS # is 31566-31-1.
If the HLB of GMS se is 5.8, does it make o/w emulsion or w/o emulsion if used alone?
I wouldn’t use it alone. It needs a co-emulsifier. I doubt you could create a stable emulsion with it as a single emulsifier. Generally I see it predominately in O/W emulsions.
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I had a supplier who mislabeled GMS+PEG-100 stearate as ‘SE’. I bought smallest pack available and tested it in low ph formula. Since it emulsified I concluded it’s the version with PEG-100 and I ordered a larger pack. SE has soap and will turns emulsion into unpleasantly looking grainy ‘porrige’ under low ph. Testing SE vs just GMS like this doesn’t make too much sense though as GMS alone isn’t an emulsifier.
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@Microformulation the some water was separated from cream on 3rd day.
they also said the CAS # is 31566-31-1. So does it mean it is GMS? -
One CAS number, one distinct compound.
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GMS SE works fine in PH 5.5 when included in water phase O/W
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