GB1287326A - Method of preparing anhydrous ammonium thiosulfate - Google Patents

Method of preparing anhydrous ammonium thiosulfate

Info

Publication number
GB1287326A
GB1287326A GB2767070A GB2767070A GB1287326A GB 1287326 A GB1287326 A GB 1287326A GB 2767070 A GB2767070 A GB 2767070A GB 2767070 A GB2767070 A GB 2767070A GB 1287326 A GB1287326 A GB 1287326A
Authority
GB
United Kingdom
Prior art keywords
ammonium thiosulphate
dimethyl
june
anhydrous ammonium
ammonium thiosulfate
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
GB2767070A
Inventor
Albert William Simon
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.)
USS Engineers and Consultants Inc
Original Assignee
USS Engineers and Consultants Inc
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 USS Engineers and Consultants Inc filed Critical USS Engineers and Consultants Inc
Publication of GB1287326A publication Critical patent/GB1287326A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00—Sulfur; Compounds thereof
    • C01B17/64—Thiosulfates; Dithionites; Polythionates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

1287326 Ammonium thiosulphate USS ENGS & CONSULTANTS Inc 8 June 1970 [6 June 1969] 27670/70 Heading C1A Anhydrous ammonium thiosulphate is prepared by reacting, in a non-aqueous medium in which ammonium thiosulphate is insoluble, NH 3 , S, O 2 , and H 2 O such that the molar ratio H 2 O : S is 0À5-5À0 and NH 3 : S is at least unity, and separating the product. The liquid medium is preferably ammonia or a watermiscible dipolar aprotic solvent. Suitable solvents are dimethyl acetamide, dimethyl-formamide, dimethyl sulphoxide, acetonitrile, N- methyl-2-pyrrolidone, sulpholane, hexamethylphosphoramide, and tetramethyl urea. The reaction temperature is preferably maintained at below 100‹ C.
GB2767070A 1969-06-06 1970-06-08 Method of preparing anhydrous ammonium thiosulfate Expired GB1287326A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US83123769A 1969-06-06 1969-06-06

Publications (1)

Publication Number Publication Date
GB1287326A true GB1287326A (en) 1972-08-31

Family

ID=25258621

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2767070A Expired GB1287326A (en) 1969-06-06 1970-06-08 Method of preparing anhydrous ammonium thiosulfate

Country Status (2)

Country Link
DE (1) DE2027820A1 (en)
GB (1) GB1287326A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5618658A (en) * 1995-02-22 1997-04-08 Fuji Hunt Photographic Chemicals, Inc. Process for producing an ammonium thiosulfate product

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5618658A (en) * 1995-02-22 1997-04-08 Fuji Hunt Photographic Chemicals, Inc. Process for producing an ammonium thiosulfate product

Also Published As

Publication number Publication date
DE2027820A1 (en) 1970-12-10

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees