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13593-03-8

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  • quinalphos is broad-spectrum, high-effective, low residue, organo-phosphorous insecticide for 70%TC, 25%EC

    Cas No: 13593-03-8

  • No Data

  • 100 Kilogram

  • 8000 Metric Ton/Year

  • Rely Chemicals Ltd.
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13593-03-8 Usage

Uses

Quinalphos is used to control both chewing and sucking insects and mites in a large number of different crops.

Safety Profile

Poison by ingestion, inhalation, skin contact, parenteral, and intraperitoneal routes. Experimental reproductive effects. Mutation data reported. An insecticide. When heated to decomposition it emits very toxic fumes of NOx, POx, and SOx

Metabolic pathway

In methanol solution, quinalphos undergoes photodegradation reactions of isomerization, oxidation, and deesterification, together with other degradation reactions, resulting in several degradation products. However, the photolysis of quinalphos in ethanol solution yields the two products, O,O-diethyl-O-(3- ethoxyquinoxalin-2-yl)phosphorothioate and O,O- diethyl-O-[3(1-hydroxyethyl)-quinoxalin- 2yl]phosphorothioate, both of which are derived from the reaction of the photoexcited quinalphos molecule with the solvent.

Degradation

Quinalphos is susceptible to hydrolysis. The DT50 values at pH 3,6 and 9 were 23,39 and 26 days, respectively (PM). Quinalphos is very susceptible to acid hydrolysis but stable under mildly basic conditions, having a halflife ten times that of parathion at pH 11 (Schmidt, 1972). Quinalphos was degraded in distilled water (pH 6.0), rain water (pH 6.8) and tap water (pH 7.8) with DT50 values of 80,50 and 60 days, respectively (Dureja ef aI., 1988). The photolysis of quinalphos in ethanolic solution irradiated by a medium pressure mercury vapour lamp (λmax 366 nm) with a glass filter to screen out light of <290 nm gave photoproducts principally derived from reaction with the solvent. The main photolysis products were 3-ethoxyand 3-hydroxyethyl-quinoxaline derivatives of quinalphos (not shown in Scheme 1). A minor product of photodegradation was quinalphos oxon (2) (Pusino et al., 1989). When quinalphos was irradiated with a high pressure mercury vapour lamp (λmax 254 nm) in a quartz reactor many more photoproducts were detected, although whether this information is relevant to photodegradation in the environment is debatable since light of wavelength ﹤290 nm is generally absent at the Earth's surface. Using this method of irradiation, Dureja et al. (1988) examined the photolysis of quinalphos in hexane and methanol solution, as a thin film on a glass plate and on the soil surface. Analysis of the photoproducts was by MS and 1H NMR spectroscopy after separation by TLC and GC. The rates of photodecomposition in aqueous solution and on soil surfaces exposed to sunlight were also measured, although in these experiments the nature of the photoproducts were not determined. In methanol solution, three major pathways of photolysis were apparent: (a) de-esterification to afford quinoxolin-2-o1(3), (b) thionethiolo rearangement to O,O-diethyl S-quinoxalin-2-yl phosphorothioate (4), which was not actually detected and was presumably de-esterified to give quinoxoline-2-thiol (5) which dimerised to the disulfide (6) and the sulfide (7), and (c) oxidation of the P=S sulfur to afford the oxon (2) as shown in Scheme 1. In addition, the de-esterification of the phosphorothioate moiety and additional alkyl transfer from quinalphos gave triethyl phosphate (S), O,O,O-triethyl phosphorothioate (9) and O,O,S-triethyl phosphorodithioate (10). A number of other photoproducts were identified which were formed via reaction of the methanol solvent with quinalphos (1) and quinoxolin-2-o1 (3) but because of their non-relevance to photoproducts produced under environmental conditions they are not included in Scheme 1. Irradiation of quinalphos as a thin film on glass produced quinalphos oxon (2) and quinoxolin-2-o1(3) as the main photoproducts. The products from the soil irradiation experiments were identified as quinalphos oxon (2), the rearranged product O,O-diethyl S-quinoxalin-2-yl phosphorothioate (4), quinoxolin-2-o1(3), quinoxoline-2-thiol(5) and the sulfide (7). Routes for photodegradation of quinalphos in methanol solution, as a thin film and on soil surfaces are shown in Scheme 1. Half-lives for the photodecomposition of quinalphos by sunlight in water varied from 23 to 30 days and on soil surfaces from 2 to 5 days.

Check Digit Verification of cas no

The CAS Registry Mumber 13593-03-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,5,9 and 3 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 13593-03:
(7*1)+(6*3)+(5*5)+(4*9)+(3*3)+(2*0)+(1*3)=98
98 % 10 = 8
So 13593-03-8 is a valid CAS Registry Number.
InChI:InChI=1/C12H15N2O3PS/c1-3-15-18(19,16-4-2)17-12-9-13-10-7-5-6-8-11(10)14-12/h5-9H,3-4H2,1-2H3

13593-03-8SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 17, 2017

Revision Date: Aug 17, 2017

1.Identification

1.1 GHS Product identifier

Product name quinalphos

1.2 Other means of identification

Product number -
Other names chinalphos

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:13593-03-8 SDS

13593-03-8Related news

Stopped-flow and kinetic-fluorimetric determination of Quinalphos (cas 13593-03-8) in water samples08/27/2019

The hydrolysis of the pesticide quinalphos in basic medium was kinetically followed and the measurement of the reaction rates allowed us to develop two kinetic-fluorimetric methods. In one of them the mixing of the reagents was directly performed in the measurement cell and, in the another one, ...detailed

Decay profile and metabolic pathways of Quinalphos (cas 13593-03-8) in water, soil and plants08/26/2019

The widespread occurrence of pesticide residues in different agricultural and food commodities has raised concern among the environmentalists and food chemists. In order to keep a proper track of these materials, studies on their decay profiles in the various segments of ecosystem under varying ...detailed

Photocatalytic degradation of Quinalphos (cas 13593-03-8) in aqueous TiO2 suspension: Reaction pathway and identification of intermediates by GC/MS08/25/2019

Quinalphos is one of the widely used organophosphate pesticides and known for its persistence in water. The present study investigates the TiO2 mediated photocatalytic degradation of quinalphos. The rate constant for degradation of quinalphos were calculated to be 0.00567 min−1 and higher degrad...detailed

Toxicomorphomics and toxicokinetics of Quinalphos (cas 13593-03-8) on embryonic development of zebrafish (Danio rerio) and its binding affinity towards hatching enzyme, ZHE108/24/2019

This study outlines the toxic effects of Quinalphos (QP), an organophosphrous insecticide on the development of zebrafish (Danio rerio) embryos, with special emphasis on toxicomorphomics and toxicokinetics of target enzyme, AChE. A range of concentrations was used to elucidate the median lethal ...detailed

Quinalphos (cas 13593-03-8) induced oxidative stress and histoarcheitectural alterations in adult male albino rats08/23/2019

Quinalphos is a synthetic organophosphate used as a broad spectrum insecticide and acaricide. The present study investigates the effect of three sub-lethal doses (0.52, 1.04, 2.6 mg/kg b.wt) of quinalphos for variable durations (15, 30 and 90 days) on oxidative stress and histopathological chang...detailed

Development of p-nitroaniline dithiocarbamate capped gold nanoparticles-based microvolume UV–vis spectrometric method for facile and selective detection of Quinalphos (cas 13593-03-8) insecticide in environmental samples08/22/2019

A simple and selective p-nitroaniline dithiocarbamate capped gold nanoparticles (p-NA-DTC-Au NPs)-based colorimetric sensor was developed for the detection of quinalphos in water and food samples. The method was based on the color change of p-NA-DTC-Au NPs from red to blue with the addition of q...detailed

In vitro and in vivo studies on degradation of Quinalphos (cas 13593-03-8) in rats08/21/2019

A pharmacokinetic in vitro and in vivo degradation study has been carried out in rat to evaluate the deleterious effects of exposure to quinalphos on a target population. Degradation of quinalphos in simulated gastric and intestinal phases has been investigated. The metabolic intermediates of qu...detailed

Determination of Quinalphos (cas 13593-03-8) in human whole blood samples by high-performance thin-layer chromatography for forensic applications08/19/2019

A simple and rapid procedure for the determination of quinalphos in human whole blood using liquid-liquid extraction and high-performance thin-layer chromatography was developed and validated. Seven different organic solvents were tested for optimum extraction of quinalphos from spiked blood sam...detailed

13593-03-8Relevant articles and documents

Investigation on the acylation of heterocyclic alcoholate anions with O,O-dialkyl phosphorochloridothioate in water solvent

Ge, Xin,Qian, Chao,Chen, Xinzhi

, p. 739 - 744 (2013)

The acylation of some heterocyclic alcoholate anions with O,O-dialkyl phosphorochloridothioate has been investigated. Higher yields and fewer byproducts were achieved in water at 50 °C by employing an effective phase-transfer catalyst (PTC) (benzyl triethylammonium chloride [BTEAC]), acylation catalyst (AC) (4-dimethylaminopyridine), and surfactant (sodium dodecyl sulfate), under weakly basic (pH 9.5~10) conditions. This reaction can also be applied to synthesize other insecticides with excellent yields.

Surface mediated synthesis of O-phosphorothioates

Ramadas,Janarthanan,Meera Rani

, p. 469 - 472 (2007/10/03)

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Condensation products

-

, (2008/06/13)

Formamidine compounds of the formula EQU1 or WHEREIN R1 represents a substituted or unsubstituted phenyl radical, R2 represents hydroogen, alkyl, alkenyl or alkinyl and R3 represents acyl their manufacture and their use in pest control.

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