[Arturo777]

Hello @aoredo

like say @Belassi, there are cheaper raw material and you are in a zone where is produce, i think that you cant find another more cheap.

for the reading, i see tha the DFA from Palm Kernel Oil is 75% more cheap that crude Kernel oil. Palm kernel oil have a lot of lauric acid and ibelive that the issue that you have to use more DFA is enriched principally in Lauric Acid. very hard soap, very bubbly but can be hard with the skin why is very cleansening.

I try to increase the ratio 50/50, but try in small batches (1 or 2 kg) and with hot process to do the perfomnce test more quickly. for this test try:

1) Increase the soda ash, the potassium tends to do more softly the soap

2) try to fat the soap 2%, in other words, put the theorical quantity pf soda ash/ sodium hydroxyde to not saponify all your oil.

3) The additional glycerine will help you with this kind of soap to compense the cleanising. do not add more of 5% or you will have problems of soap sweating. 3 % will be good enogh.

4) you can increase the tetrasodium EDTA up 0.5%, this is for improve the shelf life of your soap, but will help you too with use with the hardness of the water

5 in this case, do not put sodium chloride, this is use to increase the hardness of the soap, for the raw material is not needed.

if possible, you can add some oil rich in oleic acid in you formulation. corn, sunflower, canola is examples that can help you. 10% will help you and decrese the relationship 50 PKO/40 DFA/10 oil rich in oleic acid.  

For the nature of you oil and prevent to be rancid, is recomended to put BHT at .05 to .1%. no more than .1 or you will have coloring problems.

Hope this can help you

 

[Arturo777]

Hello to all, i am Arturo, from Mexico.
I have a MS in chemical engineering, and i was working in different kind of industries: food, agrochemical, and the last 2 years in hotel ammenities factory focused in soap manufacturing from soap noddels. Currently i am in a new project to develop all hotel ammenities for the gues since formulation to factory design and startup. i know thet i am in the right place to learn more about formulations.
Thank you all.