[go: up one dir, main page]

GB441856A - The manufacture of stable highly concentrated preparations containing alkali hydrosulphides - Google Patents

The manufacture of stable highly concentrated preparations containing alkali hydrosulphides

Info

Publication number
GB441856A
GB441856A GB2155034A GB2155034A GB441856A GB 441856 A GB441856 A GB 441856A GB 2155034 A GB2155034 A GB 2155034A GB 2155034 A GB2155034 A GB 2155034A GB 441856 A GB441856 A GB 441856A
Authority
GB
United Kingdom
Prior art keywords
hydrosulphide
hydrosulphides
preparations containing
containing alkali
pressure
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
GB2155034A
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.)
I G FARBENIDUSTRIE AG
Original Assignee
I G FARBENIDUSTRIE 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 I G FARBENIDUSTRIE AG filed Critical I G FARBENIDUSTRIE AG
Priority to GB2155034A priority Critical patent/GB441856A/en
Publication of GB441856A publication Critical patent/GB441856A/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
    • C01B17/22—Alkali metal sulfides or polysulfides
    • C01B17/32—Hydrosulfides of sodium or potassium
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/80—Compositional purity

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)

Abstract

Stable preparations containing alkali hydrosulphides are obtained by strongly heating a solution containing the hydrosulphide under conditions further promoting rapid evaporation, for instance, under reduced pressure or by spray-drying. The stability of the product may be increased by using a mixed solution of hydrosulphide and sulphide, and/or incorporating substances of a hygroscopic nature, such as glycerine, the sodium salts of sulphurized aromatic hydroxycompounds, or potassium thiocyanate. In examples, a technical solution of sodium hydrosulphide and a solution containing 32 per cent hydrosulphide and 15,3 per cent sodium sulphide are dried under 60 mm. pressure in a vacuum apparatus heated by steam under a pressure of 4 atmospheres.
GB2155034A 1934-07-23 1934-07-23 The manufacture of stable highly concentrated preparations containing alkali hydrosulphides Expired GB441856A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2155034A GB441856A (en) 1934-07-23 1934-07-23 The manufacture of stable highly concentrated preparations containing alkali hydrosulphides

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2155034A GB441856A (en) 1934-07-23 1934-07-23 The manufacture of stable highly concentrated preparations containing alkali hydrosulphides

Publications (1)

Publication Number Publication Date
GB441856A true GB441856A (en) 1936-01-23

Family

ID=10164767

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2155034A Expired GB441856A (en) 1934-07-23 1934-07-23 The manufacture of stable highly concentrated preparations containing alkali hydrosulphides

Country Status (1)

Country Link
GB (1) GB441856A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001025146A3 (en) * 1999-10-05 2001-12-06 Ppg Ind Ohio Inc Method of preparing anhydrous alkali metal sulfides

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001025146A3 (en) * 1999-10-05 2001-12-06 Ppg Ind Ohio Inc Method of preparing anhydrous alkali metal sulfides

Similar Documents

Publication Publication Date Title
GB411009A (en) Improvements in and relating to the production of amino acids from materials containing keratin
GB441856A (en) The manufacture of stable highly concentrated preparations containing alkali hydrosulphides
GB439294A (en) Manufacture of dressed textile materials
GB380563A (en) Manufacture of 6-bromo-2-hydroxynaphthalene and 4:6-dibromo-2-hydroxynaphthalene
GB408224A (en) Manufacture of alcohols
GB410310A (en) Improvements in the manufacture of paper or cloth
GB436661A (en) Manufacture of naphthalene derivatives
GB408006A (en) Manufacture of ethyl alcohol
GB383999A (en) Sizing treatment of artificial silk yarns and threads
GB453266A (en) Process for the preparation of stable alkali polysulphides and of preparations containing them
GB341120A (en) The manufacture of 6-arylamino-2-naphthols
GB486055A (en) Improvements in or relating to a process for the manufacture of a stable, liquid, vitamin-containing preparation
GB421916A (en) Method of preparing double compounds of the di- and trimethylxanthines with salts of camphoric acid
GB362501A (en) Improvements in or relating to the manufacture of readily soluble non-dyeing thio derivatives of phenols
GB421989A (en) Process for the manufacture of sodium auro-thiomalate
GB603997A (en) Improvements in or relating to the drying of carrots
GB479447A (en) Improvements in the manufacture of arylaminonaphthalene derivatives
GB494183A (en) Improvements in the manufacture and production of aminoquinaldines
GB454244A (en) Process for the manufacture of complex double compounds of organic heavy metal mercapto compounds
GB439935A (en) Process for the manufacture of stable solutions of dihydroxy-diamino-arsenobenzene and its derivatives
GB369473A (en) Process for the manufacture of salts of iodomethane sulphonic acid
GB426006A (en) Improvements in the manufacture and production of synthetic tanning agents
GB461871A (en) Improvements in and relating to processes for the manufacture of acid alkali pyrophosphates
GB361597A (en) Improvements in the manufacture and production of dimethylol acetone and its homologues
GB458102A (en) Manufacture of oxyaryl-aminoanthracene derivatives