Abstract: N-(Aminomethylene)-(monothio and dithio)-phosphoric acid diester-amides of the formula ##STR1## wherein R and R.sup.1 each independently is alkoxy or alkylthio,R.sup.2 is alkyl, andX is oxygen or sulphur,which possess arthropodicidal and nematicidal properties.

Abstract: N-Acetyl-0-(2-chloro-1-fluoro-ethyl)-thionophosphoric (phosphonic) acid ester-amides of the formula ##STR1## IN WHICH R is alkyl or alkoxy, which possess arthropodicidal and nematicidal properties.

Abstract: O-Alkyl-O-trifluoromethylsulphinylphenyl-thiono (thiol)-phosphoric acid esters of the formula ##STR1## wherein R and R.sup.1 each independently is alkyl,R.sup.2 is hydrogen, halogen or alkyl, andX is oxygen or sulphur,Which possess arthropodicidal and nematicidal properties.

Abstract: O-(1-Fluoro-2-halo-ethyl)(thiono)phosphoric(phosphonic) acid ester-amides of the formula ##STR1## in which R and R.sup.1 independently represent hydrogen, alkyl, haloalkyl or cyanoalkyl, orR and R.sup.1 conjointly with the nitrogen atom form a heterocyclic ring which can optionally be interrupted by further hetero-atoms,R.sup.2 represents ##STR2## alkoxy, halogenalkoxy or alkyl, Hal represents chlorine or bromine, andX represents oxygen or sulphur, which possess insecticidal acaricidal and nematocidal properties.

Abstract: Alkoxyethyl dithiophosphonic acid ester halide intermediates of the formula ##STR1## in which R is alkyl or phenyl,R.sup.1 is alkyl, andHal is halogenAre prepared by reacting an alkane- or phenylphosphine dihalide of the formulaR--P(Hal).sub.2with an alkoxyethylsulphenyl chloride of the formulaR.sup.1 O--C.sub.2 H.sub.4 --SCland thereafter with at least the stoichiometric amount of hydrogen sulphide. The sulphenyl chloride is produced by reacting sodium disulphide with the appropriate 2-alkoxy-alkyl halide and then with sulphuryl chloride. The novel compounds can be esterified with phenols to produce insecticides.

Abstract: O-Alkyl-S-alkyl-O-(4-trifluoromethylthiophenyl)-(thiono)-thiol-phosphoric acid esters of the formula ##STR1## in which R and R.sup.1 each independently is alkyl,R.sup.2 is hydrogen or alkyl, andX is oxygen or sulphur,Which possess insecticidal, acaricidal and nematicidal properties.

Abstract: O-Alkyl-O-[8-chloro-quinoxal-2-yl]-thionoalkanephosphonic acid esters of the formula ##STR1## in which R and R.sup.1 each independently is alkyl with 1 to 6 carbon atoms, which possess arthropodicidal, especially insecticidal and acaricidal, properties.

Abstract: O,S-Dialkyl-O-(1-cyanoalkyl-3-substituted)-pyrazol-(5)yl-thionothiolphospho ric acid esters of the formula ##STR1## in which R and R.sup.1 each independently is alkyl with 1 to 6 carbon atoms,R.sup.2 is cyanoalkyl with 1 to 4 carbon atoms in the alkyl moiety,R.sup.3 is alkyl with 1 to 4 carbon atoms or carbalkoxy with 1 to 4 carbon atoms in the alkoxy moiety, andR.sup.4 is hydrogen or halogen,Which possess arthropodicidal properties.

Abstract: O-(1-Fluoro-2-halogeno-ethyl)-thionophosphoric (phosphonic) acid esters of the formula ##STR1## in which R is alkyl, phenyl or phenyl carrying at least one substituent selected from the group consisting of halogen, alkyl, alkylthio and nitro,R.sup.1 is alkyl or alkoxy, andHal is halogen,Which possess arthropodicidal and nematicidal properties.

Abstract: O,S-Dialkyl-O-[1-alkyl-3,4-trimethylene-pyrazol(5)yl]-thionothiolphosphoric acid ester of the formula ##STR1## in which R and R' each independently is alkyl with 1 to 6 carbon atoms, andR" is alkyl with 1 to 4 carbon atoms or cyanoalkyl with 1 to 4 carbon atoms in the alkyl radical,Which possess arthropodicidal properties.

Abstract: O-Alkyl-O-[1-alkyl-5-substituted-mercapto-triazol(3)yl]-phosphoric(phosphon ic) acid esters and esteramides of the formula ##STR1## in which R is alkyl with 1 to 6 carbon atoms,R' is alkyl, alkoxy, monoalkylamino or dialkylamino, each with up to 6 carbon atoms, or phenyl,R" is cyanoalkyl with 1 to 4 carbon atoms or alkenyl with 2 to 6 carbon atoms or, in the case where R' is alkylamino, may also be alkyl with 1 to 4 carbon atoms, andR'" is alkyl with 1 to 4 carbon atoms, which possess insecticidal and acaricidal properties.

Abstract: O-Alkyl-N-substituted-S-halophenoxymethyl-dithiophosphoric acid ester-amides of the formula ##STR1## in which R is alkyl with 1 to 4 carbon atoms,R.sub.1 is alkyl with 1 to 6 or alkenyl with 2 to 5 carbon atoms andX is halophenyl,Which possess insecticidal, acaricidal and nematocidal properties.

Abstract: O-Alkyl-S-alkyl-O-[2-carbalkoxy-benzofuran(3)yl]-thionothiolphosphoric acid esters of the formula ##STR1## in which R, R.sub.1 and R.sub.2 each independently is alkyl with 1 to 6 carbon atoms,R.sub.3 is halogen, or alkyl or alkoxy with 1 to 4 carbon atoms, andn is an integer from 0 to 4,Which possess insecticidal properties.

Abstract: O-[1-Alkoxyphosphoryl-3-methyl-pyrazol(5)yl]-(thiono)phosphoric acid esters and ester amides of the formula ##STR1## in which R.sub.1 is alkoxy with 1 to 4 carbon atoms,R.sub.2 and R.sub.3 each independently is alkoxy or alkylthio with 1 to 6 carbon atoms,R.sub.4 is alkoxy, alkylthio, alkylamino or alkyl with 1 to 5 carbon atoms, provided that at least one of the radicals R.sub.2, R.sub.3 and R.sub.4 is alkylthio, andX is oxygen or sulfur,Which possess arthropodicidal properties.

Abstract: N-Dithiophosphoryl-carbamic acid esters of the formula ##STR1## in which R and R' each independently is alkyl with 1 to 6 carbon atoms, andR" is alkyl with 1 to 6 carbon atoms, halogenoalkyl with 1 to 4 carbon atoms or dialkylaminoalkyl with 1 to 4 carbon atoms in each alkyl moiety,Which possess insecticidal and acaricidal properties.

Abstract: N,N-dimethyl-O-[1-methyl-3-N-methylcarbaminyl-methyl-pyrazol(5)yl]-carbamic acid ester of the formula ##SPC1##Which possesses insecticidal properties.

Abstract: O-Alkyl-O-[1-cyanoalkyl-5-substituted-mercapto-triazol(3)yl]-(thiono)-phosp horic (phosphonic) acid esters or ester-amides of the formula ##EQU1## in which R is alkyl with 1 to 6 carbon atoms,R' is alkyl, alkoxy or alkylamino each with 1 to 6 carbon atoms, amino or phenyl,R" is alkenyl with 2 to 6 carbon atoms, or alkyl, cyanoalkyl or alkylthioalkyl with 1 to 4 carbon atoms in each alkyl moiety,R'" is cyanoalkyl with 1 to 4 carbon atoms in the alkyl moiety, andX is oxygen or sulfur,Which possess insecticidal, acaricidal and nematocidal properties.

Abstract: O-[1-alkyl- or-phenyl-5-alkylmercaptoalkyl-mercapto-1,2,4-triazol(3)yl]-(thiono)-phosp horic(phosphonic, phosphinic) acid esters and ester-amides of the formula ##SPC1##In whichR is alkyl or alkoxy, each with 1 to 6 carbon atoms,R' is alkyl, alkoxy or alkylamino, each with 1 to 6 carbon atoms, or phenyl,R" is alkylmercaptoalkyl with 1 to 4 carbon atoms in each alkyl moiety,R'" is alkyl with 1 to 4 carbon atoms or phenyl, andX is oxygen or sulfur,Which possess insecticidal, acaricidal and nematocidal properties.

Abstract: O-alkyl-O-[1-phenyl-5-cyanoalkylmercapto-1,2,4-triazol(3)yl]-thionophosphor ic (phosphonic) acid esters of the formula ##EQU1## in which R is alkyl with 1 to 6 carbon atoms,R' is alkyl or alkoxy with in either case 1 to 6 carbon atoms, andR" is cyanoalkyl with 1 to 4 carbon atoms, which possess insecticidal, acaricidal and nematicidal properties.

Abstract: O-Alkyl-O-[2-alkylthio-imidazo(4)yl]-(thiono)-phosphoric (phosphonic) acid esters and ester-amides of the formula ##EQU1## in which R is alkyl with 1 to 6 carbon atoms,R' is alkyl, alkoxy or mono- or dialkylamino with 1 to 6 carbon atoms in each alkyl moiety,R" is cyano or carbalkoxy with 1 to 5 carbon atoms in the alkyl chain,R'" is alkyl or alkenyl with up to 6 carbon atoms,Alk is alkyl with 1 to 5 carbon atoms, andX is oxygen or sulfur,Which possess insectical, acaricidal and nematicidal properties.