120 / 258
Chapter
XIII.
PHOSPHATES
PHOSPHATES
for
the
soda
fountain
are
a
solution
of
acid
phosphate
with
any
of
the
fruit
or
flavored
syrups,
omitting
the
soda
foam,
as
phosphates
are
served
solid.
To
each
gallon
of
flavored
syrup
8
fl.oz.
of
acid
phosphate
is
added.
Acid
Phosphates
1.
—
Bone
ash,
32
av.oz.;
sulphuric
acid,
24
av.oz.;
water,
sufficient
to
make
1
gal.
Mix
the
bone
ash
with
2
pt.
of
water
in
a
glass
or
earthenware
or
other
container
which
is
not
acted
upon
by
the
acid;
add
the
acid
previ-
ously
diluted
with
the
remainder
of
the
water
and
mix
thoroughly.
Set the
mixture
aside
for
24
hours
with
occa-
sional
stirring,
then
transfer
the
same
upon
a
strong
muslin
strainer
and
subject
to
pressure,
avoiding
contact
with
metals;
add
to
the
magma
some
water
and
let
drain
until
1
gal.
of liquid
has
been
obtained,
then
filter
through
paper.
2.
—
Phosphoric
acid,
50
per
cent.,
64
parts;
precipitated
chalk,
12
parts;
calcined
magnesia,
1
part;
potassium
carbonate,
1
part;
distilled
water,
178
parts.
Add
the
chalk
to
the
acid
gradually
and
then
add
the
magnesia
and
stir
well.
Dissolve
the
potassium
carbonate
in
9
fl.oz.
of
the
water,
add
the
solution
gradually
to
the
acid
liquor,
admix
the
remainder
of
the
water,
set
aside
for
1
or
2
hours
and
filter.
3.
—
Phosphoric
acid,
8
oz.;
potassium
phosphate,
80
100