DE707756C - Production of colloidal sulfur - Google Patents

Production of colloidal sulfur

Info

Publication number
DE707756C
DE707756C DEC55641D DEC0055641D DE707756C DE 707756 C DE707756 C DE 707756C DE C55641 D DEC55641 D DE C55641D DE C0055641 D DEC0055641 D DE C0055641D DE 707756 C DE707756 C DE 707756C
Authority
DE
Germany
Prior art keywords
sulfur
production
colloidal sulfur
colloidal
solution
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
DEC55641D
Other languages
German (de)
Inventor
Dr-Ing Hans Wirth
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.)
SCHACHT KOM GES F
Original Assignee
SCHACHT KOM GES F
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 SCHACHT KOM GES F filed Critical SCHACHT KOM GES F
Priority to DEC55641D priority Critical patent/DE707756C/en
Application granted granted Critical
Publication of DE707756C publication Critical patent/DE707756C/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
    • C01B17/02—Preparation of sulfur; Purification
    • C01B17/06—Preparation of sulfur; Purification from non-gaseous sulfides or materials containing such sulfides, e.g. ores

Description

Herstellung von kolloidem Schwefel D:e Darstellung von kolloidem Schwefel aus Polysulfidlösungen durch Einleiten von gasförmiger schwefliger Säure bei Gegenwart eines Schutzkolloides ist bekannt. Der Schwefel fällt jedoch ziemlich grob aus, da zur Absättigung der alkalischen_Lösungzunächst erhebliche Mengen schwefliger Säure verbraucht werden und d:e hierbei entstehenden Sulfite die Bildung kolloiden Schwefels verhindern. Weiterhin ist es sehr schwer, den Endpunkt der Reaktion der schwefligen Säure mit den Polysulfiden zu erkennen, wodurch leicht eine Lebersättigung mit schwefliger Säure eintreten kann.Production of colloidal sulfur D: e representation of colloidal sulfur from polysulphide solutions by introducing gaseous sulphurous acid in the presence a protective colloid is known. However, the sulfur turns out to be quite coarse, because to saturate the alkaline solution, considerable amounts of sulphurous must first be reached Acids are consumed and the resulting sulphites lead to the formation of colloids Prevent sulfur. Furthermore, it is very difficult to determine the end point of the reaction Sulphurous acid can be recognized with the polysulphides, thus easily causing liver saturation can occur with sulphurous acid.

Es wurde nun gefunden, daß diese Nachteile dadurch vermieden werden können, daß in die Polysulfidlösung zunächst Kohlensäure eingeleitet wird bis zur neutralen Reaktion. Wird nim anschließend gasförmige schweflige Säure eingeleitet, so setzt sofort die Bildung von kolloidem Schwefel ein. Die Beendigung der Reaktion wird .durch Schäumen angezeigt, da die überschüssige schweflige Säure die Kohlensäure in'Freiheit setzt. Die entstehende kolloide Lösung kann nun bis zur Pastenform oder zur Trockne eingedampft werden.It has now been found that these disadvantages are avoided in this way can that carbonic acid is first introduced into the polysulfide solution up to neutral reaction. If gaseous sulphurous acid is then introduced, so the formation of colloidal sulfur begins immediately. The termination of the reaction is indicated by foaming, since the excess sulphurous acid is the carbonic acid in 'freedom. The resulting colloidal solution can now be in paste form or evaporated to dryness.

Ausführungsbeispiel Eine in bekannter Weise mit Schwefel angereicherte Ammoniumsulfidlösung wird mit einem Schutzkolloid, wie z. B. Dextrin, versetzt. In diese Lösung wird bis zur neutralen Reaktion Kohlensäure eingeleitet. Anschließend erfolgt das Einleiten von Schwefeldioxyd, bis ein starkes Schäumen und Ansteigen der Lösung erfolgt. Die nunmehr fertige kolloide Lösung wird bis zum gewünschten Schwefelgehalt getrocknet.EXEMPLARY EMBODIMENT One enriched in a known manner with sulfur Ammonium sulfide solution is coated with a protective colloid, such as. B. dextrin, added. Carbonic acid is introduced into this solution until the reaction is neutral. Afterward the introduction of sulfur dioxide takes place until a strong foaming and rise the solution takes place. The now finished colloidal solution is up to the desired Sulfur content dried.

Claims (1)

PATENTANSPRUCH: Herstellung von kolloidem Schwefel durch Einleiten von Schwefeldioxyd in Polysulfidlösungen in Gegenwart eines Schutzkolloides, dadurch gekennzeichnet, daß die Polysulfidlösung vor dem Einleiten des Schwefeldioxydes mit Kohlensäure neutralisiert wird.PATENT CLAIM: Production of colloidal sulfur by introducing it of sulfur dioxide in polysulphide solutions in the presence of a protective colloid, thereby characterized in that the polysulfide solution before the introduction of the sulfur dioxide is neutralized with carbonic acid.
DEC55641D 1940-02-13 1940-02-13 Production of colloidal sulfur Expired DE707756C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEC55641D DE707756C (en) 1940-02-13 1940-02-13 Production of colloidal sulfur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEC55641D DE707756C (en) 1940-02-13 1940-02-13 Production of colloidal sulfur

Publications (1)

Publication Number Publication Date
DE707756C true DE707756C (en) 1941-07-02

Family

ID=7028184

Family Applications (1)

Application Number Title Priority Date Filing Date
DEC55641D Expired DE707756C (en) 1940-02-13 1940-02-13 Production of colloidal sulfur

Country Status (1)

Country Link
DE (1) DE707756C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2448740A (en) * 1945-10-15 1948-09-07 Schwartz Fernand Frederic Process for preparing stable colloidal solutions of metal sulfides

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2448740A (en) * 1945-10-15 1948-09-07 Schwartz Fernand Frederic Process for preparing stable colloidal solutions of metal sulfides

Similar Documents

Publication Publication Date Title
DE707756C (en) Production of colloidal sulfur
AT303074B (en) Process for the production of nitric acid with a concentration in particular above 70% by weight by absorption of nitrogen dioxide from nitrous gases in water or aqueous nitric acid
DE546104C (en) Process for the production of sulphite pulp
DE417214C (en) Simultaneous production of ammonium sulphate and ammonium chloride, preferably for fertilization purposes
DE400301C (en) Process for the production of elemental sulfur from metal sulfides and sulfur dioxide
DE910409C (en) Process for the production of ammonium bicarbonate
DE484569C (en) Process for the production of carbon disulfide
DE557848C (en) Process for the production of an impregnating agent for wood and similar fibrous materials
DE588610C (en) Process for removing hydrogen sulfide from gases containing ammonia
DE354575C (en) Process for the preparation of a non-hygroscopic mixture from carbonate salts of potassium and sodium
DE323627C (en) Process for the vegetable sizing of paper, cardboard, fabrics, fibers and the like Like. Using sulfite cellulose waste liquor
DE673164C (en) Disinfectants
DE339612C (en) Process for converting a sulphite and bisulphite thionate solution into pure thionate solution
DE537940C (en) Process for the production of resin glue
DE1006837B (en) Process for the production of contact sulfuric acid from elemental sulfur
DE876397C (en) Process for the production of solutions of acetylene and sulfur dioxide for storage, storage and transport purposes
DE561559C (en) Process for the purification of gases containing hydrogen sulphide and optionally ammonia
DE349335C (en) Process for the production of iron leather
DE479475C (en) Production of sodium sulfhydrate from sodium sulfide with the simultaneous extraction of nitrites and nitrates
DE517018C (en) Fell bath for the copper oxide ammonia cellulose stretch spinning process
DE446525C (en) Production of solid sodium bisulfite or sodium sulfite
DE858545C (en) Process for the production of mixed acids used for nitration
DE672852C (en) Process for the production of zinc hyposulfite
DE468778C (en) Mortar or artificial stone mass, consisting of lime, sand and sulfuric acid
DE2320678A1 (en) Slow-release nitrogenous fertilizers prodn - by treating low-value coal with solvents, oxidizing, adding e.g. ammonia, and drying