CN1271524A - Process for synthesizing magnesium phosphide as fumigating insecticide of storehouse - Google Patents
Process for synthesizing magnesium phosphide as fumigating insecticide of storehouse Download PDFInfo
- Publication number
- CN1271524A CN1271524A CN 99112883 CN99112883A CN1271524A CN 1271524 A CN1271524 A CN 1271524A CN 99112883 CN99112883 CN 99112883 CN 99112883 A CN99112883 A CN 99112883A CN 1271524 A CN1271524 A CN 1271524A
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- Prior art keywords
- additive
- storehouse
- red phosphorus
- magnesium
- magnesium phosphide
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- 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.)
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Abstract
A magnesium phosphide as fumigating insecticide of storehouse is prepared from magnesium powder and red phosphorus through electrothermal reaction under the existance of one or more kinds of C18-25 fatty acid or its salts, C24-26 chloroparaffin, alkali-earth metal oxide and carbonate as additive for slowing down reaction speed.
Description
The invention belongs to agricultural storage fumigating insecticide.
Magnesium phosphide than the easy decomposition of aluminum phosphate, because decomposition rate is fast, has shortened fumigation time as the storage fumigating insecticide, has obtained drug effect preferably, has enlarged application surface.Can be used for the storage fumigant insect killing of fumigant insect killing and special requirement under the lower storage condition of temperature, the fumigant insect killing of especially large-scale shipping of goods has shortened the vessel port time, reduces demurrage charge greatly and uses.
U.S; 4331642, U.S; 4.412.979-patent report; the existing magnesium phosphide production of present German Duguay company; but the process route that the said firm adopts is the yellow phosphorus method; promptly having in the closed reactor of stirring under the condition of logical inert gas argon gas, constantly adding magnesium powder and yellow phosphorus and react synthetic magnesium phosphide under catalyzer causes, this process need is provided with facilities such as heating, cooling, mass transport, argon shield.This method flow is long, energy consumption is big, and argon shield has improved cost.For overcoming above-mentioned deficiency, the present invention proposes having in the presence of the additive of slowed down reaction speed with magnesium powder, red phosphorus, in discharging the closed reactor of air as far as possible, and the electricity consumption thermal booster reaction, promptly magnesiothermy makes magnesium phosphide.This technology has saved facilities such as heating, cooling, material transportation, argon shield, and therefore advantages such as flow process is short, equipment is few, energy consumption is little, the production investment is low are arranged.
Specific embodiments of the present invention
1, the specification of selected raw material magnesium powder is:
Activated carbon content＞94%;
Granularity 40-80 detailed outline all-pass mistake.
2, the 2-15% additive that in batching, adds the total raw material amount.Additive adopts the fatty acid of C18-25 or its salt, C24-26 chloralkane, alkaline earth oxide, carbonate, one of them or several.
3, magnesiothermy technology provided by the invention and semi-hermetic type reactor are that reaction is irreversible exothermic reaction according to magnesium powder and red phosphorus, and reaction just goes on automatically in case cause.For realizing magnesiothermy technology, designed the semi-hermetic type reactor, avoided reaction mass contact and produced vigorous reaction and material spray with air, avoid again that red phosphorus is subjected to thermal oxide in the course of reaction, make cause when gas expands in the reactor in pressure sharp increase.
Example 1
With the magnesium powder that conforms to quality requirements and red phosphorus by 1: 0.82-0.86 (weight) ratio, and after the C18 chloralkane of the 2-15% of raw material total amount fully mixes as additive, pack in the reactor, the electric heating initiation reaction, the reaction mass temperature is reduced to below 100 ℃, gets final product discharging, can get the product magnesium phosphide, yield is in magnesium powder＞95%, content＞90%.
Claims (2)
1, the synthesis technique of magnesium phosphide as fumigating insecticide of storehouse, it is characterized in that adopting magnesium powder, red phosphorus is raw material, the additive that adds slowed down reaction speed, in the closed reactor of discharging air, the electric heating initiation reaction makes magnesium phosphide, used additive is the fatty acid of C18-25 or its salt, the chloralkane of C24-26, alkaline earth oxide, phosphate in the reaction, one of them or several.
2, synthesis technique according to claim 1, the amount ratio that it is characterized in that raw materials used magnesium powder, red phosphorus is 1: 0.82-0.86 (weight ratio), the amount of the additive that slowed down reaction speed is used is the 2-15% of magnesium powder and red phosphorus gross weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99112883A CN1107447C (en) | 1999-04-27 | 1999-04-27 | Process for synthesizing magnesium phosphide as fumigating insecticide of storehouse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99112883A CN1107447C (en) | 1999-04-27 | 1999-04-27 | Process for synthesizing magnesium phosphide as fumigating insecticide of storehouse |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1271524A true CN1271524A (en) | 2000-11-01 |
| CN1107447C CN1107447C (en) | 2003-05-07 |
Family
ID=5276132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99112883A Expired - Fee Related CN1107447C (en) | 1999-04-27 | 1999-04-27 | Process for synthesizing magnesium phosphide as fumigating insecticide of storehouse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1107447C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102351158A (en) * | 2011-07-14 | 2012-02-15 | 马文忠 | Process of producing aluminum phosphide from yellow phosphorus and recovering byproducts simultaneously |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1567520B2 (en) * | 1966-04-07 | 1973-01-04 | Freyberg, Werner, Dr., 6149 Kirschhausen | Process for the production of magnesium phosphide |
| DE2943905A1 (en) * | 1979-10-31 | 1981-05-14 | Hoechst Ag, 6000 Frankfurt | METHOD FOR PRODUCING MAGNESIUM PHOSPHIDE |
| DE2945647C2 (en) * | 1979-11-12 | 1990-01-04 | Degesch Gmbh, 6000 Frankfurt | Process for the production of aluminum phosphide and / or magnesium phosphide |
| DE3117393A1 (en) * | 1981-05-02 | 1982-11-11 | Degesch Gmbh, 6000 Frankfurt | METHOD FOR PRODUCING THE PHOSPHIDES OF ALUMINUM OR MAGNESIUM |
| KR0166327B1 (en) * | 1996-04-04 | 1999-01-15 | 박철근 | Fungicide |
-
1999
- 1999-04-27 CN CN99112883A patent/CN1107447C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102351158A (en) * | 2011-07-14 | 2012-02-15 | 马文忠 | Process of producing aluminum phosphide from yellow phosphorus and recovering byproducts simultaneously |
| CN102351158B (en) * | 2011-07-14 | 2013-02-13 | 马文忠 | Process of producing aluminum phosphide from yellow phosphorus and recovering byproducts simultaneously |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1107447C (en) | 2003-05-07 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHENYANG FENGSHOU PESTICIDE CO., LTD. Free format text: FORMER OWNER: HUAREN (SHENYANG) AGRICULTURAL CHEMICALS CO., LTD. Effective date: 20040924 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20040924 Address after: 110108, No. 100, Ji Dong Road, Lin Sheng Town, Sujiatun District, Liaoning, Shenyang Patentee after: Shenyang harvest pesticide Co., Ltd. Address before: 110101 No. 101 Haitang street, Sujiatun District, Liaoning, Shenyang Patentee before: Huaren (Shenyang) Agricultural Chemicals Co., Ltd. |
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| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |