An Improved Method of Producing Carbon Tetrachloride.
Year: 1893

page_text: Date of Application, 18th Oct., 1893
Complete Specification Left, 30th June, 1894-Accepted, 11th Aug., 1894
PROVISIONAL SPECIFICATION.
An Improved Method of Producing Carbon Tetrachloride.
We, Dr. ALBERT MÜLLER, and Dr. HERMANN DUBOIS, both of Rheinau,
near Mannheim, in the Empire of Germany, Manufacturers, do hereby declare the
nature of this invention to be as follows:-
Our invention relates to a method of producing carbon tetrachloride.
If a mixture of sulphur chloride and carbon disulphide are digested in the
presence of metals or metallic chlorides, which are preferably reduced to a finely
divided state, the mass is observed to suddenly become dark; the reaction is rather
violent and the final product consists of carbon tetrachloride and sulphur.
An excess of sulphur chloride renders the reaction less violent and increases the
production. The chemical reaction is represented by the following formula:
EXAMPLE:
76 kilogrammes of carbon disulphide
405 kilogrammes of sulphur chloride
500 grammes of pulverized iron
are heated to about 60 degrees centigrade in an iron vessel coated with lead and
provided with a lateral man-hole, a return flow cooler and a steam coil. The
reaction begins of itself. At the end we heat for a short time to ebullition.
The carbon disulphide is now almost completely transformed into carbon
tetrachloride.
In the cooling the sulphur produced is almost entirely separated in the form of
large crystals and may now be converted back again into sulphur chloride or
carbon disulphide, in order to be again included in the cycle of the reaction.
The liquid let off from the sulphur subjected to fractional distillation for the
purpose of separating the carbon tetrachloride from the excess of sulphur chloride.
For freeing the raw carbon tetrachloride thus obtained from the last traces of
sulphur chloride carried away we use the well-known methods.
In lieu of sulphur chloride the higher chlorine compounds of sulphur may of
course be employed.
Dated this 18th day of October 1893.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicants.
COMPLETE SPECIFICATION.
An Improved Method of Producing Carbon Tetrachloride.
We, Dr. ALBERT MÜLLER, and Dr. HERMANN DUBOIS, both of Rheinau,
near Mannheim, in the Empire of Germany, Manufacturers, 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 :-
Our invention relates to a method of producing carbon tetrachloride.
If a mixture of sulphur chloride and carbon disulphide are digested in the
presence of metals, metallic chlorides, metallic bromides, or metallic iodides, which
Priced 1

page_text: are preferably reduced to a finely divided state, the mass is observed to suddenly
become dark; the reaction is rather violent and the final product consists of carbon
tetrachloride and sulphur.
An excess of sulphur chloride renders the reaction less violent and increases the
production. The chemical reaction is represented by the following formula :-
EXAMPLE:
76 kilogrammes of carbon disulphide,
405 kilogrammes of sulphur chloride,
500 grammes of pulverized iron
are heated to about 60 degrees centigrade in an iron vessel coated with lead and
provided with a lateral man-hole, a return flow cooler and steam coil. The
reaction begins of itself. At the end we heat for a short time to ebullition.
The carbou disulphide is now almost completely transformed into carbon
tetrachloride.
In the cooling the sulphur produced is almost entirely separated in the form of
large crystals and may now be converted back again into sulphur chloride or
carbon disulphide, in order to be again included in the cycle of the reaction.
The liquid let off from the sulphur is subjected to fractional distillation for the
purpose of separating the carbon tetrachloride from the excess of sulphur chloride.
For freeing the raw carbon tetrachloride thus obtained from the last traces of
sulphur chloride carried away we use the well known methods.
In lieu of sulphur chloride the higher chlorine compounds of sulphur may of
course be employed.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is:-
A method of producing carbon tetrachloride, which consists in heating a mixture
of sulphur chloride and carbon disulphide, with addition of metals or metallic
chlorides, especially iron on ferric chloride.
Dated this 30th day of June 1894.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.; Agents for the Applicants.