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
GB2311932A
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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 Imperial Chemical Industries LtdfiledCriticalImperial Chemical Industries Ltd
Priority to GB2311932ApriorityCriticalpatent/GB406281A/en
Publication of GB406281ApublicationCriticalpatent/GB406281A/en
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
2 : 4-dinitrophenylthioglycollic acid, which may be obtained by the action of a halogenoacetic acid on dinitrothiophenol, is reduced by means of alkaline sulphide or other suitable reducing agent to give 2-nitro-4-aminophenylthioglycollic acid. According to examples, 2 : 4-dinitrophenylthioglycollic acid, obtained by the action of monochloracetic acid on dinitrothiophenol, is reduced with alkaline sodium sulphide, sodium hydrosulphide, or sodium sulphide and sulphur, or alkaline sulphide and magnesium sulphate.
GB2311932A1932-08-171932-08-17Process for the manufacture of dyestuff intermediate
ExpiredGB406281A
(en)