I was reading through an old patent recipe for Fels Naptha Soap. The interesting things were that
1. they used caustic soda, potash and lime water as well
2. they used Rosin rather than plant oils or animal fats
I have a pine tar soap on my list for one of the next batches, but I can't seem to find any suggestions for using ROSIN. Now that baseball season is pretty much done, I can get rosin bags pretty cheap. Has anyone worked with this?
What is the benefit or reason to use Lime Water? Why would you want to use both Lye and Potash?
The ingredients follow:
(except for the potash the degrees represent specific gravity)
Naphtha at 65 deg (sg)
----100 gallons
Rosin
----750 lbs
Caustic Potash Disolved in Lime water and reduced to 60 degrees f
----100 lbs
Caustic Soda in solution at 38 degrees Baume (sg)
----100 lbs
Lime water = saturated calcium hydroxide
Potash = potassium hydroxide
Caustic Soda = sodium hydroxide
1. they used caustic soda, potash and lime water as well
2. they used Rosin rather than plant oils or animal fats
I have a pine tar soap on my list for one of the next batches, but I can't seem to find any suggestions for using ROSIN. Now that baseball season is pretty much done, I can get rosin bags pretty cheap. Has anyone worked with this?
What is the benefit or reason to use Lime Water? Why would you want to use both Lye and Potash?
The ingredients follow:
(except for the potash the degrees represent specific gravity)
Naphtha at 65 deg (sg)
----100 gallons
Rosin
----750 lbs
Caustic Potash Disolved in Lime water and reduced to 60 degrees f
----100 lbs
Caustic Soda in solution at 38 degrees Baume (sg)
----100 lbs
Lime water = saturated calcium hydroxide
Potash = potassium hydroxide
Caustic Soda = sodium hydroxide
