uprovements in Disinfectant and Cleaning Liquid.
Year: 1885

page_text: uprovements in Disinfectant and Cleaning Liquid.
I HERMAN ENDEMANN, residing at 80 Quincy Street, Brooklyn in the County
of Kings and State of New York, in the United States of America, gentleman,
do hereby declare the nature of this invention and in what manner the same is
to be performed, to be particularly described and ascertained in and by the
following statement:-
My invention relates to improvements in disinfecting compounds.
The object of my invention is to provide a liquid disinfectant which can be
readily mixed with water and used for disinfecting purposes generally and is
specially useful for cleansing and freeing animals of vermin.
In carrying out my invention I proceed as follows,-
First, the ordinary heavy oil of coal tar of commerce is freed from the naphtha-
line it contains by allowing it to stand in the cold for some time, or by subjecting
it to a refrigerating process, which tends to crystallize or solidify the naphthaline
thus allowing it to be separated from the oil, the oil thus produced being of a
specific gravity varying from 1.04-to 1.05.
Second. I take a substance in commerce, as Spirits of tar, which is obtained from
wood in the manufacture of charcoal.
This substance varies considerably in specific gravity some of the varieties being
heavier than water, while others are much lighter and by mixing them a substance
can be easily obtained of any specific gravity between the highest and lowest
attainable points but by preference I produce a mixture of a specific gravity
of 0.930 which I combine with the lightest heavy oil of coal tar mentioned above
or still together when the heavier oil of coal tar is to be used.
Third. I prepare an oleic acid soap by combining oleic acid of commerce with
the proper quantity of caustic potash dissolved in water, the proportion of water
being such, that 100 parts of the ready soap shall contain 43 parts of oleic acid.
Fourth, I next prepare a solution of caustic potash by weighing off 6 parts of
caustic potash and adding thereto 46 parts by weight of water.
In order to produce from the materials first described, the liquid disinfectant,
I proceed as follows,―
I mix and heat together 300 gallons of heavy oil of coal tar of 1.04 specific
gravity and 100 gallons of the Spirits of wood tar of 0.930 specific gravity which
will produce a liquid compound of about the specific gravity of water.
I then remove (300) three hundred gallons of the mixture and set it to one side,

page_text: In the one hundred gallons of the mixture remaining in the vessel I place
200 lbs. of oleic soap and heat and stir the same until the soap is dissolved.
The three hundred gallons of the mixture of heavy oil of coal tar and spirits of
tar which had been set aside are then added to the one hundred gallons containing
the soap and the whole is well mixed by agitation, and allowed to cool.
When cool I add thereto four hundred and thirty five pounds of the potash
solution, prepared as directed above.
This is well stirred in and a sample of the liquid tested from time to time in
order to ascertain, whether the combination of the substances is perfect.
If the combination has lost some of its water during the heating of the mixture
of heavy oil of coal tar and Spirits of wood tar for the purpose of dissolving the
soap, it may become necessary at the end of the operation to add water in small
quantities from time to time until a perfect compound is produced.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is
A compound for disinfecting purposes and for destroying vermin, consisting of
heavy oil of coal tar, Spirits of wood tar, Potash soap and Potash solution combined
in the manner and in the proportions specified.