DE651331C - Process for the preparation of a weedkiller containing copper chloride - Google Patents
Process for the preparation of a weedkiller containing copper chlorideInfo
- Publication number
- DE651331C DE651331C DEI49291D DEI0049291D DE651331C DE 651331 C DE651331 C DE 651331C DE I49291 D DEI49291 D DE I49291D DE I0049291 D DEI0049291 D DE I0049291D DE 651331 C DE651331 C DE 651331C
- Authority
- DE
- Germany
- Prior art keywords
- copper chloride
- copper
- preparation
- weedkiller
- containing copper
- 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
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
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
- A01N59/16—Heavy metals; Compounds thereof
- A01N59/20—Copper
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/12—Drying solid materials or objects by processes not involving the application of heat by suction
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Inorganic Chemistry (AREA)
- Plant Pathology (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Molecular Biology (AREA)
- Pest Control & Pesticides (AREA)
- Mechanical Engineering (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Description
Verfahren zur Herstellung eines kupferchloridhaltigen Unkrautvertilgungsmittels Die Verwendung von Kupfersalzen, insbesondere Kupfersulfat, Kupfernitrat, Kupferchlorid, zur Bekämpfung von Ackerunkräutern ist bereits bekannt. Kupfersulfat wirkt erst in verhältnismäßig hohen Konzentrationen genügend; Kupfernitrat und Kupferchlorid sind stark hygroskopische Salze, so daß. Versand und Lagerung dieser Salze in der Praxis Schwierigkeiten bereiten. Man hat deshalb bereits aus Kupfersulfat und Kochsalz bei erhöhter Temperatur ein leicht zerfallendes, calciniertes Kupferchlorid enthaltendes, haltbares und ,nicht zerfließendes Produkt hergestellt. Dieses Verfahren hat den Nachteil, daß das zur Wirkung gelangende Kupferchlorid bei der Herstellung des Mittels erst aus dem teuren Kupfersulfat mit Hilfe von Kochsalz gebildet wird.Process for the preparation of a weedkiller containing copper chloride The use of copper salts, especially copper sulfate, copper nitrate, copper chloride, for combating arable weeds is already known. Copper sulfate only works sufficient in relatively high concentrations; Copper nitrate and copper chloride are highly hygroscopic salts, so that. Shipping and storage of these salts in the Difficulty in practice. One has therefore already made of copper sulphate and table salt at elevated temperature a readily disintegrating, calcined copper chloride containing, Durable and non-deliquescent product made. This procedure has the Disadvantage that the taking effect copper chloride in the preparation of the agent is only formed from the expensive copper sulphate with the help of table salt.
Es wurde nun gefunden, daß man zu sehr gut haltbaren Unkrautvertilgungsmitteln gelangt, wenn man seine konzentrierte Kupferchloridlösung durch Auftreffenlassen auf erhitztes festes Natriumsulfat zur Trockne verdampft. Dieses Verfahren bedeutet eine besonders einfache rund wirtschaftliche Arbeitsweise, weil technisch gut zugängliche Ausgangsstoffe Verwendung finden. Kupfer-Chlorid in Lösung ist heute wirtschaftlich herstellbar, da durch Chlorierung des technisch leicht zugänglichen Kupferchlorürs in einfacher Weise -Kupferchloridlösunggen hergestellt werden können. Läßt man nun beispielsweise eine solche Kupferchloridlösung auf erhitztes Natriumsulfat laufen, und zwar meinem Verhältnis, daß das trockene Endprodukt etwa 26% Cu enthält, so erhält man in einfachster Weise ein trockenes, nicht zerfließendes und gut haltbares Pulver, das sich in r- bis 2%iger wässeriger Lösung vorzüglich zur Vernichtung von Ackerunkräutern eignet.It has now been found that weedkillers can be kept very well when you hit your concentrated copper chloride solution evaporated to dryness on heated solid sodium sulfate. This procedure means a particularly simple and economical way of working, because it is technically easily accessible Find starting materials use. Copper chloride in solution is economical today can be produced, since by chlorination of the technically easily accessible copper chlorine in a simple manner -Kupferchloridlösunggen can be produced. One lets now For example, run such a copper chloride solution on heated sodium sulfate, namely my ratio that the dry end product contains about 26% Cu, so one obtains in the simplest way a dry, non-flowing and well-preserved one Powder, which in r- to 2% aqueous solution is excellent for the destruction of Field weeds are suitable.
Nach dem hier beschriebenen Verfahren wird vermieden, daß etwa zwischen dem Kupferchlorid und dem Natriumsulfat eine im Sinne der Bildung von Kupfersulfat und Natriumchlorid verlaufende doppelte Umsetzung eintritt, wie dies bei andienen bekannten Verfahren der Fall ist. Die zufließende Kupferchloridlösung verdampft vielmehr so rasch, daß für eine solche Umsetzung keine Möglichkeit bleibt. Das Kupferchlorid .schlägt sich in fester Form auf der Oberfläche des Natriumsulfates nieder, so daß die Entstehung des für die Unkrautvertilgung wenig geeigneten Kupfersulfats ausgeschlossen bleibt.According to the method described here, it is avoided that about between the copper chloride and the sodium sulfate one in the sense of the formation of copper sulfate and sodium chloride proceeding double reaction occurs, as is the case with andien known procedure is the case. The incoming copper chloride solution evaporates rather, so quickly that there is no possibility of such an implementation. The copper chloride . is deposited in solid form on the surface of the sodium sulfate, so that the formation of copper sulphate, which is not very suitable for weed control, is excluded remain.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEI49291D DE651331C (en) | 1934-03-18 | 1934-03-18 | Process for the preparation of a weedkiller containing copper chloride |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEI49291D DE651331C (en) | 1934-03-18 | 1934-03-18 | Process for the preparation of a weedkiller containing copper chloride |
Publications (1)
Publication Number | Publication Date |
---|---|
DE651331C true DE651331C (en) | 1937-10-11 |
Family
ID=7192531
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEI49291D Expired DE651331C (en) | 1934-03-18 | 1934-03-18 | Process for the preparation of a weedkiller containing copper chloride |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE651331C (en) |
-
1934
- 1934-03-18 DE DEI49291D patent/DE651331C/en not_active Expired
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