Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1204020A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
South Metropolitan Gas Co
Original Assignee
South Metropolitan Gas Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by South Metropolitan Gas CofiledCriticalSouth Metropolitan Gas Co
Priority to GB1204020ApriorityCriticalpatent/GB167540A/en
Publication of GB167540ApublicationCriticalpatent/GB167540A/en
Ammoniacal liquor is heated under such conditions of temperature and pressure as to expel carbon dioxide but not sulphuretted hydrogen. The treated liquor is distilled to obtain ammonia solution containing ammonium sulphide which is treated with sulphuretted hydrogen, prepared, for example, from iron sulphide and sulphuric acid, to yield ammonium sulphide, or, if sulphur be added, ammonium polysulphide.
GB1204020A1920-04-301920-04-30Improvements in the manufacture of ammonium sulphides
ExpiredGB167540A
(en)