Soap-Making Manual: A Practical Handbook on the Raw Materials, Their Manipulation, Analysis and Control in the Modern Soap Plant.Thomssen, Edgar George
Science
Soap-Making Manual: A Practical Handbook on the Raw Materials, Their Manipulation, Analysis and Control in the Modern Soap Plant.
Thomssen, Edgar George
Soap
In the last method a combination of 80 per cent. tallow, very low in
free acid, 20 per cent. cocoanut oil and 5 per cent. W. W. rosin is a
suitable charge. The saponification and finishing is carried out as with
a full boiled soap. The soap is then placed into a jacketed vessel,
provided with dry-steam coils, by which the excess water is evaporated
from the soap until it contains 73 per cent. fatty acids. When the thick
mass reaches this stage it is framed and when cool is suitable for
obtaining a semi transparency which now depends upon the number of times
the soap is milled, it being, of course, inferred that no solid matter
of any sort be added to the soap.
COLD MADE TRANSPARENT SOAP.
While transparent soaps may be made by the above general methods they
are usually made by the semi-boiled or cold process. By this process a
more satisfactory soap is obtained and it is more simple to carry out. A
detailed description of this method is best and most easily given by
using a typical formula.
Charge:
Tallow 193-1/2 lbs.
Cochin Cocoanut Oil 169-1/2 "
Castor Oil 89-1/2 "
Soda Ash 7-3/4 "
Soda Lye, 36 degs. B. 256 "
Sugar (Cane) 198 "
Alcohol 126 "
Water (Distilled) 80 "
To proceed, first place into a crutcher or jacketed kettle the oils and
fat and heat to 140 degs. F. Then add the soda ash dissolved in about 30
pounds of the water, after which the lye is added and the mass stirred
until a finger or stick run over the surface leaves an imprint. Where
the soap has reached this stage, it is well covered and allowed to stand
about two hours or until it bulges in the center, after which the rest
of the water which should contain no lime or other mineral substance and
which is preferably distilled water, is added. The sugar is then slowly
shoveled in while the mass is stirring and finally the alcohol is poured
in. The heat is then increased to 160 degs. F. by dry steam and the soap
crutched until dissolved. Under no circumstances should any soap be
allowed to remain above the surface of the mass on the sides of the
mixer. This crutching operation consumes about one hour, and when
finished the soap should stand in the vessel about half an hour when a
small sample is taken out to cool. This sample should be clear and show
an excess of alkali. If it is not clear more alcohol is added, if not of
sufficient strength more lye put in until the desired condition is
reached. The perfume and color are now added.
Public-domain text, read in full here on John Shaqi.
Reviews
Reviews
No reviews yet
Be the first to share your thoughts on this work.
Elsewhere in the archive
Join the Discussion
Join the discussion
Sign in to leave a comment or review.
Sign InorCreate an account