Improvements in the Manufacture of Solutions of Hypochlorites of Alkalies.
Year: 1898

page_text: Date of Application, 8th Dec., 1898
Complete Specification Left, 19th Aug., 1899-Accepted, 23rd Sept., 1899
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Solutions of Hypochlorites
of Alkalies.
We, CHARLES LONGUET HIGGINS, Chemist, MAX MUSPRATT, Chemist, EDWARD
SHRAPNELL SMITH, Chemist, and THE UNITED ALKALI COMPANY, LIMITED, all
of 30, James Street, Liverpool, in the County of Lancaster, do hereby declare
the nature of this invention to be as follows:-
It has been found that the presence of metals capable forming higher oxides
possessing acid properties have a detrimental effect upon the stability of solu-
tions of hypochlorites of alkalies. This applies especially to iron even in very
small quantities.
The object of this invention is to obviate this objection.
According to this invention the ferrate or other salt of a higher metallic
oxide, is decomposed into the hydroxide which may then be settled out.
This can be readily effected in the case of iron by the addition of a reducing
agent such for example as glycerine, or alcohol; which reducing agent acts
rapidly upon a ferrate and causes ferric hydroxide to be precipitated.
Or we may add to the solution a substance which will form an insoluble salt
with the ferrate, or other higher metallic oxide. In the case of ferrate any salt
forming an insoluble ferrate may be employed such for instance as a soluble
salt of barium.
Or we may add to the solution a substance which will reduce the ferrate, or
other salt of higher metallic oxide, to ferrite, or similar lower oxide, which
remains in solution, and then add to the solution a substance which forms an
insoluble salt with the ferrite, or similar lower oxide.
Dated this 8th day of December 1898
JOHNSONS & WILLCOX,
47, Lincolns Inn Fields, London, W.C.,
Agents.
Improvements in the Manufacture of Solutions of Hypochlorites
of Alkalies.
We, CHARLES LONGUET HIGGINS, Chemist, MAX MUSPRATT, Chemist, EDWARD
SHRAPNELL SMITH, Chemist, and THE UNITED ALKALI COMPANY, LIMITED, all
of 30, James Street, Liverpool, in the County of Lancaster, do hereby declare
Price 871

page_text: 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:-
It has been found that the presence of metals capable of forming higher oxides
possessing acid properties, have a detrimental effect upon the stability of solu-
tions of hypochlorites of alkalies. This applies especially to iron even in very
small quantities.
The object of this invention is to obviate this objection.
According to this invention the ferrate or other salt of a higher metallic
oxide, is decomposed into the hydroxide which may then be settled out.
This can be readily effected, in the case of iron, by the addition of a reducing
agent such for example as glycerine, or alcohol; which reducing agent acts
rapidly upon a ferrate and causes ferric hydroxide to be precipitated.
Or we may add to the solution a substance which will form an insoluble salt
with the ferrate, or other salt of higher metallic oxide. In the case of ferrate any
salt forming an insoluble ferrate may be employed; such, for instance, as a soluble
salt of barium.
Or we may add to the solution a substance which will reduce the ferrate, or
other salt of higher metallic oxide, to ferrite, or similar lower oxide, which
remains in solution, and then add to the solution a substance which forms an
insoluble salt with the ferrite, or similar lower oxide.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed we declare that what we claim
is:-
In the manufacture of solutions of hypochlorites of alkalies acting upon the
ferrate or other salt of a higher metallic oxide as herein before explained, so as to
cause the separation of the said ferrate or salt from the solutions.
T
JOHNSONS & WILLCOX,
47, Lincolns Inn Fields, London, W.C.,
Agents.
JOHNSONS & WILLCOX,
47, Lincolns Inn Fields, London, W.C.,
Agents.