Glycerin vs Vegetable Glycerin

Discussion in 'Liquid Soap and Cream Soap Forum' started by rosche, Jul 26, 2015.

  1. Jul 26, 2015 #1

    rosche

    rosche

    rosche

    Active Member

    Joined:
    May 27, 2015
    Messages:
    34
    Likes Received:
    4
    Location:
    Surabaya, Indonesia
    Hello everyone. I want to share something about glycerin.

    Sometimes ago I make liquid soap with vegetable glycerin and it turn out well.

    A week ago, I buy glycerin (not vegetable glycerin, just glycerin). It's cheaper than VG.

    I start using it to make liquid soap and it's messy. Still get soap paste but the paste is.. Weird. Super sticky like glue, opaque, and melting...

    I CP the soap paste. When I get the opaque color, sticky and melted soap paste, I think I should HP it. It turn out uglier, opaque and crumbly although quite firm.

    From this experience, I wonder if glycerin in soap making is always have to use the vegetable one instead of the 'just' glycerin.
     
  2. Jul 26, 2015 #2

    Susie

    Susie

    Susie

    Supporting Member

    Joined:
    Aug 1, 2013
    Messages:
    9,006
    Likes Received:
    8,111
    Location:
    Texas
    I don't think the glycerin had much to do with it. Could you post your entire recipe in weights? (including the KOH, water, and all additives) That would help us troubleshoot it.
     
  3. Jul 26, 2015 #3

    rosche

    rosche

    rosche

    Active Member

    Joined:
    May 27, 2015
    Messages:
    34
    Likes Received:
    4
    Location:
    Surabaya, Indonesia
    My recipe (100gr oil):

    castor 12gr
    coconut 25gr
    olive 28 gr
    palm 35

    KOH 23 gr
    water 23gr
    glicerine 46gr

    I used the 'more glycerine' method by DeeAnna.
    When I use the vegetable glycerin, it turn out well. And when I try with the 'just' glicerine, it's a mess.

    Both still can be diluted but the 'just' glycerin will no be able to be soap2go...
     
  4. Jul 26, 2015 #4

    Seawolfe

    Seawolfe

    Seawolfe

    Well-Known Member

    Joined:
    Jan 21, 2014
    Messages:
    3,267
    Likes Received:
    2,936
    Location:
    So Cal
    Im curious - where did you get this glycerin? Does it say 100% glycerin on the ingredients?

    I only ask because it makes me crazy that some "make your own soap without lye" sites on the web use "glycerin" in their ingredients, but they actually mean "glycerin based melt and pour soap", which makes me absolutely insane! I know that would be a solid and you have a liquid, but Im wondering what else might be out there. I guess there are glycerin liquid soap bases out there.
     
  5. Jul 26, 2015 #5

    Susie

    Susie

    Susie

    Supporting Member

    Joined:
    Aug 1, 2013
    Messages:
    9,006
    Likes Received:
    8,111
    Location:
    Texas
    Palm oil will make a difference in the appearance of paste and liquid soap. Have you used this exact recipe before?

    And that is an awfully small batch size, small differences in weighing will have a really big impact.
     
  6. Jul 26, 2015 #6

    rosche

    rosche

    rosche

    Active Member

    Joined:
    May 27, 2015
    Messages:
    34
    Likes Received:
    4
    Location:
    Surabaya, Indonesia
    @seawolfe I got it from local chemical store. This is glycerin and not to be confuse with glycerin mp soap :D

    It's just there are 3 types of glycerin as far as I know. Vegetable, animal and petrochemical

    It is in used plastic bottle. I guess the store have glicerin in bulk (maybe in barrel) and because I only buy 1L, so they packed it in a used plastic bottle.

    As far as I know, this is maybe glycerin derived from petrochemical. It's cheaper than vegetable glycerin. The storekeeper say this glycerin is foodgrade.

    @Susie yes. At first I made some batches using the exact recipe but with vegetable glycerin. It turn out well. I even made smaller batches. 50gr and 30 gr of oil. And it's fine so far. But when I use the 'just' glycerin, it's ugly. Even when I only use 15% of total water, still a mess.

    I don't know if this 'just' glicerin only behave badly in soap paste or it is so in cp soap. Maybe tomorrow I'll get some NaOH and hope the glycerine will do ok so it won't be sitting in vain X)
     

Share This Page