I agree, why would you list water if you are listing what is still in there? I think we can all agree that that is a fine example of poor labeling, regardless.
Glycerin as by-product of soap making
- Thread starter Hausfrau007
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Thank you alot...
Susie you mentioned... "...they could have used some glycerin to dissolve the NaOH
This means that some soapers might use glycerin to dissolve NaOH, what is the reason for doing this?
Also. in EU the legal procedure is use as labeling the resulting products of the saponification process and not the reactants?
Susie you mentioned... "...they could have used some glycerin to dissolve the NaOH
This means that some soapers might use glycerin to dissolve NaOH, what is the reason for doing this?
Also. in EU the legal procedure is use as labeling the resulting products of the saponification process and not the reactants?
Sonya-m
Well-Known Member
It is indeed. In inci only, descending order.
I don't remember where I saw it, but one source I read back when I was just researching making soap suggested using glycerin to dissolve the NaOH. With it being ONE source, I decided that I would go with the mainstream and dissolve in good old water.
That was over 2 years ago. I don't recall seeing that person post in the last year or so.
Here in Canada we are supposed to list the natural glycerin that is created from saponification as we are required to list what is in the product when complete rather than what went in when a chemical reaction changes the nature of the ingredients that went in and since glycerin is produced (about 7% of the finished product) it should be listed.
As for Aqua, it is still in the soap even after a few years of curing, it doesn't all disappear.
As for Aqua, it is still in the soap even after a few years of curing, it doesn't all disappear.
coffeetime
Well-Known Member
Lindy, has the glycerin question finally been decided then? Last I heard (from you, I think) it was under debate as to whether it should be listed or not.
Coffeetime, the Guild is going with it being listed as best practices. I spoke to HC and they said anything that is present in the finished product including what is a by-product from the process should be listed on your labels.. I asked specifically about the glycerin that is produced and according to him it should be listed. On your label it ends up coming before Aqua since most of the water cures out, it ends up being about 5 - 6% whereas the glycerin is 7%. I hope all that made sense.
coffeetime
Well-Known Member
It does make sense. I just wish the people at Health Canada would make the regs easier to follow. How did you discover that your water is about 5%, by the way? I've been listing the water as the percentage that went in because I had no idea how to accurately predict the amount that is there at packaging. And thank you for responding, by the way.
You should publish a digital guide to the cosmetic regs. A quick reference would be invaluable.
You should publish a digital guide to the cosmetic regs. A quick reference would be invaluable.
Thank you Coffeetime. As for the water percentage once cured I think I read it in something Dunn wrote, but I would have to backtrack to get that information again.
I did learn something new today. If you are using EU Trivial names then they need to be bilingual.
I did learn something new today. If you are using EU Trivial names then they need to be bilingual.
coffeetime
Well-Known Member
My usual percentage of water going in is about 19, I think, and then it's cured to wrapping stage at 10-13% weight (water) loss. So that would mean I would have 6-9% water left, right. How long was the cure in Dunn's case? I have the book upstairs, I'll have to look for the info after supper.
I really don't know. I don't know if it is in his book or one of his writings. In all fairness it may have come from somewhere else but it seems to me to be Dunn. I'll try to backtrack and find that.
AND I could even be wrong - I know that would be rather shocking, but it could happen.:lolno:
ETA: According to Wikipedia the water left is between 6% & 12% so it looks like I just might be wrong in the 5% standard. I don't believe that finished soap has 12% water left in it, that would seem to be very early in the cure since we start out with 15% - 18% water. So it would make sense for it to be between 5% & 7% water left after a proper cure.
AND I could even be wrong - I know that would be rather shocking, but it could happen.:lolno:
ETA: According to Wikipedia the water left is between 6% & 12% so it looks like I just might be wrong in the 5% standard. I don't believe that finished soap has 12% water left in it, that would seem to be very early in the cure since we start out with 15% - 18% water. So it would make sense for it to be between 5% & 7% water left after a proper cure.
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