POLYRAM
METIRAM
CAS: 9006-42-2
Molecular Formula: C12H12N6S16Zn
POLYRAM - Names and Identifiers
| Name | METIRAM |
| Synonyms | NIA (TM) TECH. 9102(R) FMC9102 POLYRAM METIRAM METIRAM, METRIRAM POLYRAM(C) ZINC(2+)]TETRAHYDRO-1 TRIS[AMMINE[ETHYLENEBIS(DITHIOCARBAMATO) |
| CAS | 9006-42-2 |
| EINECS | TR6250000 |
POLYRAM - Physico-chemical Properties
| Molecular Formula | C12H12N6S16Zn |
| Molar Mass | 818.69 |
| Melting Point | 156℃ (approx, Decomposition) |
| Storage Condition | 2-8℃ |
POLYRAM - Risk and Safety
| UN IDs | UN 1282 3 / PGII |
POLYRAM - Study on Residue Degradation Behavior and Toxicity of Dysenlian and Ethylene Thiourea in Citrus Orchard
From HowNet
Author:
Summary:
Dysen United is an excellent protective fungicide. Dysenlian 70% water dispersible granules, the trade name is "Pinrun". In recent years, Pinrun has been widely used in China, especially in the southern provinces. Previous studies on Pinrun have mainly focused on its prevention and control of fruit and vegetable diseases, but little research has been on its residual degradation behavior and toxicity. In this paper, the residual degradation behavior of Dysen and its main metabolite ethylenethiourea in citrus orchards was studied by designing field experiments. Through laboratory simulation, the toxic effects of Dysenlian 70% water dispersible granules on three-leaf duckweed and loach, and the toxic effects of ethylenethiourea on Daphnia under controlled conditions were studied. The main results are as follows: (1) The residue analysis method of Dysen in citrus and orange orchard soil is based on headspace gas chromatography. In a heated closed top-empty bottle, when HCl/SnCl2 is encountered, the digestion reaction in the sample generates carbon disulfide gas. The amount of carbon disulfide is determined by gas chromatography, which represents the residue of Dysen pesticide. After determination, the minimum detection amount of Dysen Union is 1.9 × 10-10g, and the minimum detection limit of Dysen Union in citrus and orange orchard soil is 0.06 mg/kg for orange peel, 0.05 mg/kg for orange meat, 0.05 mg/kg for whole fruit and 0.06 mg/kg for orange orchard soil. When the addition level is 0.5-5.0 mg/kg, the average recoveries of Dysenlian in orange peel, orange meat, whole fruit and orange orchard soil are 86.15%-96.95%,86.28%-101.97%,81.61%-91.89%,88.90%-106.26%, and the coefficients of variation are 5.38%-7.62%,4.19%-8.02%,2.36%-6.19%,5.28%-9.64%, respectively. The accuracy of this analysis method is, the accuracy and sensitivity both meet the technical requirements for pesticide residue analysis. (2) A residue analysis method for ethylenethiourea in citrus and orange orchard soil was established. Ethylene thiourea in the sample was extracted with methanol, purified by a mixture column of florisic soil and neutral alumina, and determined by UV detector of liquid chromatography (HPLC). The minimum detection measure of ethylenethiourea is 1.2 × 10-l0g. The minimum detection limit of ethylenethiourea in citrus and orange orchard soil is orange peel, orange meat is 0.01 mg/kg, whole fruit is 0.009 mg/kg, and orange orchard soil is 0.008 mg/kg. When the addition level is 0.1-2.0 mg/kg, the average recoveries of ethylenethiourea in orange peel, orange meat, whole fruit and orange orchard soil are 91.35%-98.04%,91.98%-94.66%,83.85%-88.56%,87.55%-93.71%, and the coefficients of variation are 3.87%-5.17%,4.17%-5.23%,1.98%-5.38%,4.15%-5.48%, respectively. The accuracy of this analysis method, the accuracy and sensitivity have met the technical requirements of pesticide residue analysis. (3) The residue degradation behavior of Dysen and its main metabolite ethylenethiourea in citrus orchards in Hunan, Zhejiang and Guizhou has been studied for two years. The results show that the residual degradation rule of Dysenian and its main metabolite ethylenethiourea will also change with the change of external environment. Among them, the half-lives of Senlian in the orange orchard soil of Hunan and Zhejiang in 2007 were 27.61d and 7.16d respectively. The half-lives in citrus fruits were 9.55d and 8.39d respectively. In the 2008 s, the half-lives of Senlian in orange orchard soils in Hunan and Guizhou were 11.53d and 14.94d respectively. The half-lives in citrus fruits are 11.23d and 7.63d respectively. The results showed that Dysen United was able to dissolve faster in the oranges. The residual amount of Dysen in citrus and orange orchard soil is related to factors such as application amount and application times. Generally speaking, the larger the application amount, the more application times, and the higher the residual amount of Dysen in citrus and orange orchard soil. The sampling time, especially the length of the sampling time after the last application, is positively correlated with the residue of Dysen in citrus and orange orchard soil, that is, the shorter the sampling time, the higher the residue. In addition, ethyl thiourea residues were not detected in orange peel, orange meat, whole fruit and soil in Hunan, Zhejiang and Guizhou for two years. (4) The toxic effects of water-dispersible granules of Dysen 70% on three-leaf duckweed and loach were studied by static test and semi-static test respectively. Through experiments, it is concluded that the half inhibitory concentrations (IC50) of Dysenlian 70% water dispersible granules for 24,48,72 and 96 h are 11.75,4.31,3.29 and 2.67mg/L respectively, the growth effect of Pinrun on three-leaf duckweed is obviously "low (concentration) to promote high (concentration) inhibition" or "long (action time) to inhibit short (action time) to promote" toxic effect. The semi-lethal concentrations (LC50) of water-dispersible granules for 24,48,72 and 96h Dyssen 70% to loach are 100.26,29.29,19.63 and 15.14 mg/L, respectively, and the safe concentration (SC) is 0.2190mg/L. The results show that, dysenlian 70% water dispersible granule is highly toxic to loach. (5) The toxic effect of ethylenethiourea (ETU) on Daphnia was studied by 48h static test. Through experiments, it is concluded that the EC50 of ETU to Daphnia for 24 and 48 h is 1.14 and 0.64g/L respectively, the LC50 of ETU to Daphnia for 24 and 48 h is 344.49 and 3.49g/L respectively, and the safe concentration (SC) is 10.62mg/L respectively. The results showed that ETU was slightly toxic to Daphnia.
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keywords:
dysen union ethylenethiourea citrus orchard residual behavior aquatic organisms toxicity
Degree level:
master's degree
Degree year:
2010
cited:
Last Update：2024-01-02 23:10:35
POLYRAM - Residue Analysis of Pyraclostrobin in Grape and Soil from 60%-Dysenlian Water Dispersible Granules
From VIP Journal Professional Edition
Author:
Li Ruijuan ,< a href = "https://xueshu.baidu.com/usercenter/data/author?cmd=authoruri&wd=authoruri:(3 e25f070a366a542) author:(Yu Jianlei)" target = "_blank"> Yu Jianlei ,< a href = "https://xueshu.baidu.com/usercenter/data/author?cmd=authoruri&wd=authoruri:(1 b798be2a2c4b155) author:(Song Guochun)" target = "_blank"> guochun ,< a href = "https://xueshu.baidu.com/usercenter/data/author?cmd=authoruri&wd=authoruri:(d9cbb565a7dfe974) author:(Ma Hui)" target = "_blank"> Ma Hui
Summary:
a solid phase extraction-reversed phase high performance liquid chromatography (RP-HPLC) was established to detect 60% azole ether. Residues of pyraclostrobin in grapes and soil in water dispersible granules of Dysenlian. The recovery rate of the method is 80.4%-98.4% and the coefficient of variation is 1.8%-3.8%. The minimum detection amount is 2 × 10-10g, and the minimum detection concentration is 0.01mg kg -1. Studies on digestion dynamics showed that pyraclostrobin digested rapidly in grape and soil, with half-lives of 3.7-3.8d and 8.7-10.2d respectively. The final residue test showed that 60% azole ether. The final residues of pyraclostrobin in grape and soil were 0.1585-0.1886mg kg -1 and 0.6935-0.7245mg kg -1 respectively after spraying 900mg(a. I.).kg -1, 7 days after 4 times of spraying, the maximum allowable residue (MRL value) of pyraclostrobin in grapes is lower than that specified by CAC 2.0mg kg -1.
keywords:
pyraclostrobin; grapes; soil; residue
DOI:
CNKI:SUN:HJHX. 0.2010-04-015
cited:
Year:
2010
Last Update：2023-08-16 22:23:51
POLYRAM - A bactericidal composition containing pyraclostrobin and Dysen Union and its preparation method.
from Baidu library
patent type:
patent for invention
application (patent) number:
CN201911018997.2
date of application:
20191024
public/announcement number:
CN110839647A
date of publication/announcement:
20200228
Applicant (patentee):
Huizhou yinong technology co., ltd
Inventor:
tan kui ,< a href = "https://xueshu.baidu.com/s?wd=author: (weshadi) & tn = SE_baiduxueshu_c1gjeupa & ie = utf-8 & SC _f_para = SC _hilight = person" target = "_blank"> weshadi "https://xueshu.baidu.com/s?wd=author: (Chen Yuqing) & tn = SE_baiduxueshu_c1gjeupa & ie = utf-8 & SC _f_para = SC _hilight = person" target = "_blank"> Chen Yuqing , Mo Junrui , Wang Aichen ,< a href = "https://xueshu.baidu.com/s?wd=author: (Liao Lianan) & tn = SE_baiduxueshu_c1gjeupa & ie = utf-8 & SC _f_para = SC _hilight = person" target = "_blank"> Liao Lianan
national and provincial code:
CN441302
Summary:
The embodiment of the present invention discloses a bactericidal composition containing pyraclostrobin and Dysen Union and a preparation method thereof. The bactericidal composition comprises the following raw materials with the following mass percentage: 3-8% of pyraclostrobin, 50-60% of Dysen Union, 10-30% of dispersant, 1-5% of wetting agent, 0.5-3% of pH regulator, 0.5-5% of collapse aid, defoaming agent 0.05 ~ 0.3%, filler 0 ~ 20%. The method for preparing the bactericidal composition comprises: dissolving the dispersant, wetting agent, pH adjusting agent, and chipping agent in water in proportion to form a mixed solution; and continuing to add pyraclostrobin to the mixed solution, and homogenizing and dispersing the fillers to form a mixed slurry. The bactericidal composition of the embodiment of the present invention includes two active ingredients with different bactericidal mechanisms, pyrazole and Dysenlian, which have both protective and therapeutic effects, and can effectively prevent and control basidiomycetes and ascomycetes
Last Update：2023-08-16 22:23:51
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