GB381213A - Process for the manufacture of 2.2-diamino-diphenyl-4.4-disulphonic acid - Google Patents

Process for the manufacture of 2.2-diamino-diphenyl-4.4-disulphonic acid

Info

Publication number
GB381213A
GB381213A GB1901631A GB1901631A GB381213A GB 381213 A GB381213 A GB 381213A GB 1901631 A GB1901631 A GB 1901631A GB 1901631 A GB1901631 A GB 1901631A GB 381213 A GB381213 A GB 381213A
Authority
GB
United Kingdom
Prior art keywords
acid
diphenyl
disulphonic acid
diamino
manufacture
Prior art date
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
GB1901631A
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie AG
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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to GB1901631A priority Critical patent/GB381213A/en
Publication of GB381213A publication Critical patent/GB381213A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00—Casting in, on, or around objects which form part of the product
    • B22D19/04—Casting in, on, or around objects which form part of the product for joining parts
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C309/00—Sulfonic acids; Halides, esters, or anhydrides thereof
    • C07C309/01—Sulfonic acids
    • C07C309/28—Sulfonic acids having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton
    • C07C309/45—Sulfonic acids having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton containing nitrogen atoms, not being part of nitro or nitroso groups, bound to the carbon skeleton

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)

Abstract

Diphenyl is sulphonated to diphenyl-4 : 4<1>-disulphonic acid by means of an excess of sulphuric acid monohydrate or oleum containing about 20 per cent sulphur trioxide and the product is nitrated by means of a sulphuric acid-nitric acid mixture to give 2 : 2<1>-dinitrodiphenyl-4 : 4<1>-disulphonic acid. The nitro body is then reduced by known reducing agents such as iron and hydrochloric acid to the 2 : 2<1>-diaminodiphenyl-4 : 4<1>-disulphonic acid.
GB1901631A 1931-07-01 1931-07-01 Process for the manufacture of 2.2-diamino-diphenyl-4.4-disulphonic acid Expired GB381213A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1901631A GB381213A (en) 1931-07-01 1931-07-01 Process for the manufacture of 2.2-diamino-diphenyl-4.4-disulphonic acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1901631A GB381213A (en) 1931-07-01 1931-07-01 Process for the manufacture of 2.2-diamino-diphenyl-4.4-disulphonic acid

Publications (1)

Publication Number Publication Date
GB381213A true GB381213A (en) 1932-10-03

Family

ID=10122354

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1901631A Expired GB381213A (en) 1931-07-01 1931-07-01 Process for the manufacture of 2.2-diamino-diphenyl-4.4-disulphonic acid

Country Status (1)

Country Link
GB (1) GB381213A (en)

Similar Documents

Publication Publication Date Title
GB381213A (en) Process for the manufacture of 2.2-diamino-diphenyl-4.4-disulphonic acid
US2868812A (en) Manufacture of fatty acid monoesters of glycerol monosulfuric acid and salts thereof
GB763981A (en) Improvements in or relating to composition and process for electroplating bright nickel
GB787229A (en) Protecting against corrosion of or inhibiting corrosion of iron, aluminium, zinc and their alloys
GB1024656A (en) Nitrobenzotrichlorides and process for their manufacture
GB326022A (en) Manufacture of sulphonic acids of 1-ªÏ-amino methylnaphthalene
GB290229A (en) Manufacture of sulphonic acids of 6-chloro-2-amino-1-methyl-benzene
GB801870A (en) A process for the production of 1-nitro-naphthalene-3, 6- or 3, 7-disulphonic acid
GB492316A (en) A manufacture of absorptive materials, especially applicable for cation exchange
GB514711A (en) Process for the manufacture of aromatic sulphonic acid chloride sulphonic acids and salts thereof
GB289097A (en) Improvements in and relating to the manufacture of 1-aminoanthraquinone-2-sulphonic acid
GB876487A (en) Preparation of acetonedicarboxylic acid and esters thereof
GB1338935A (en) Sulphonation process
GB285488A (en) Process for the manufacture of aniline-2:5-disulphonic acid
GB702953A (en) Improvements relating to 2,8-disulphonic acid of 3,7-diaminodibenzothiophenedioxide
GB425239A (en) Manufacture of compounds useful as detergents and wetting-out agents
GB229719A (en) Improvements relating to the production of anthraquinone sulphonic acids
GB342601A (en) Improvements in or relating to processes for the pickling of metals and the like processes
GB320397A (en) Improvements in the manufacture and production of n-dihydro-1.2.2.1-anthraquinoneazine fast to chlorine
GB186515A (en) The manufacture of 1.4-naphthol sulphonic acid
GB461894A (en) Manufacture of 2:6-dimethylnaphthalene-1-sulphonic acid
GB466721A (en) Improvements in or relating to the manufacture of sulphuric acid
GB248411A (en) Improvements in and relating to the manufacture of dyestuff intermediates
GB384615A (en) Manufacture of chlorosulphonic acid
GB387019A (en) Process for the purification of impure sulphur