DE571929C - Field weed killers - Google Patents

Field weed killers

Info

Publication number
DE571929C
DE571929C DEC44845D DEC0044845D DE571929C DE 571929 C DE571929 C DE 571929C DE C44845 D DEC44845 D DE C44845D DE C0044845 D DEC0044845 D DE C0044845D DE 571929 C DE571929 C DE 571929C
Authority
DE
Germany
Prior art keywords
sulfuric acid
field weed
weed killers
anthracene
acid
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
DEC44845D
Other languages
German (de)
Inventor
Dr Fritz Wolff
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.)
MEYER LUDWIG CHEM FAB
Original Assignee
MEYER LUDWIG CHEM FAB
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 MEYER LUDWIG CHEM FAB filed Critical MEYER LUDWIG CHEM FAB
Priority to DEC44845D priority Critical patent/DE571929C/en
Application granted granted Critical
Publication of DE571929C publication Critical patent/DE571929C/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N41/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a sulfur atom bound to a hetero atom
    • A01N41/02—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a sulfur atom bound to a hetero atom containing a sulfur-to-oxygen double bond
    • A01N41/04—Sulfonic acids; Derivatives thereof

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Pest Control & Pesticides (AREA)
  • Plant Pathology (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Description

Ackerunkrautvernichtungsmittel Die Anwendung schwefeldioxydhaltiger Lösupgen unter 3 % allein oder in Verbindung mit anderen Stoffen ist bekannt, desgleichen die Anwendung von Schwefelsäure.Field weed killers The use of sulfur dioxide containing Losupgen below 3% alone or in combination with other substances is known, as well the application of sulfuric acid.

Die Herstellung haltbarer S,02-Lösungen in wirksamen Konzentrationen, besonders in Mischung mit anderen Stoffen, ist schwierig. Die niedrige Sättigungskonzentration S02-hal tiger Lösungen bedingt einen großen Wasserballast.The production of durable S, 02 solutions in effective concentrations, especially when mixed with other substances is difficult. The low saturation concentration S02-containing solutions require a large amount of water ballast.

Es wurde nun gefunden, daß haltbare Gemische aus schwefliger Säure, Schwefelsäure und Carbazol- oder Anthracensulfosäuren leicht herstellbar sind. Die Herstellung geschieht folgendermaßen: q.o kg Schwefelsäure (66°B6) werden in i o kg Anthracenrückständeeingerührt. Nach Beendigung der Reaktion, während der die Temperatur auf 7o bis 8o° steigt, erhält man ,ein völlig wasserlösliches Produkt aus o,5 S02 und 74. % Schwefelsäure und Sulfosäuren. (als H2 S10,1 berechnet).It has now been found that durable mixtures of sulphurous acid, sulfuric acid and carbazole or anthracene sulphonic acids can easily be prepared. It is produced as follows: qo kg of sulfuric acid (66 ° B6) are stirred into io kg of anthracene residues. When the reaction has ended, during which the temperature rises to 70 ° to 80 °, a completely water-soluble product composed of 0.5% SO 2 and 74% sulfuric acid and sulfonic acids is obtained. ( calculated as H2 S10,1 ).

Zur Bekämpfung des Hederichs genügt eine 3- bis 5%ige Lösung dieses Ansatzes mit höchstens 0,025 % S,02 und 3,7 % Gesamtsc7iwefelsäure. Das .entstandene Produkt hat den Vorteil, daß es sofort ohne nennenswerte Wärmeentwicklung in Wasser löslich ist. Der Erfindungsgedanke beruht darin, daß die aufzuwendenden Mengen an Schwefelsäure und Sulfos,äuren durch die Verwendung der angegebenen Sulfurierungsgemische gegenüber dem Bekannten stark vermindert werden.A 3 to 5% solution of this mixture with a maximum of 0.025 % S, 02 and 3.7% total sulfuric acid is sufficient to combat the Hederich. The resulting product has the advantage that it is immediately soluble in water without any significant development of heat. The idea of the invention is based on the fact that the amounts of sulfuric acid and sulfonic acids to be used are greatly reduced by the use of the specified sulfurization mixtures compared to the known.

So wird nach den bekannten Verfahren Schwefelsäure z. B. in i2,q.%iger Lösung, Toluolsulfosäure in i o % iger Lösung verwendet.Thus, according to the known method, sulfuric acid z. B. in i2, q.% Iger Solution, toluenesulfonic acid used in 10% solution.

Demgegenüber hat vorliegendes Produkt aus Carbazol- und Anthracensulfos.äure und Schwefelsäure nur eine Anwendungskonzentration von 3,7 % Gesamtschwefelsäure, d. h. von i % Carbazol- und Anthracensulfosäure und 2,7 % Schwefelsäure. Es genügen bereits 3%ige Lösungen des Ansatzes, so daß sich die Konzentrationen der einzelnen Stoffe noch mehr vermindern.In contrast, this product has carbazole and anthracene sulfonic acid and sulfuric acid only an application concentration of 3.7% total sulfuric acid, d. H. of 1% carbazole and anthracene sulfonic acid and 2.7% sulfuric acid. It is enough already 3% solutions of the approach, so that the concentrations of the individual Reduce substances even more.

Claims (1)

PATENTANSPRUCH: Ankerunkrautvernichtungsmittel, dadurch gekennzeichnet, daß @es saure Schwefeldioxyd, Schwefelsäure, Carbazol- und Anthracensulfos.äure tenthaltende Sulfurierungsprodukte der Anthracenrückstände ,enthält.PATENT CLAIM: Anchor weed killer, characterized in that that @es acidic sulfur dioxide, sulfuric acid, carbazole and anthracene sulfonic acid t-containing sulfurization products of the anthracene residues.
DEC44845D 1931-05-21 1931-05-21 Field weed killers Expired DE571929C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEC44845D DE571929C (en) 1931-05-21 1931-05-21 Field weed killers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEC44845D DE571929C (en) 1931-05-21 1931-05-21 Field weed killers

Publications (1)

Publication Number Publication Date
DE571929C true DE571929C (en) 1933-03-07

Family

ID=7025969

Family Applications (1)

Application Number Title Priority Date Filing Date
DEC44845D Expired DE571929C (en) 1931-05-21 1931-05-21 Field weed killers

Country Status (1)

Country Link
DE (1) DE571929C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE753828C (en) * 1939-03-25 1952-11-24 Ig Farbenindustrie Ag Combat plant-damaging insects

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE753828C (en) * 1939-03-25 1952-11-24 Ig Farbenindustrie Ag Combat plant-damaging insects

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