Abstract: Preparation of cyclopropane carboxylic acids usable as intermediates and of formula (II), wherein R1 represents halogen, preferably Cl or Br, or haloalkyl, preferably CF3, and X2 represents halogen, preferably Cl or Br, where R1 or X2 may be the same or different, and wherein the configuration of (II) is predominantly Z for R1=CF3 and X2=Cl; by reacting, in the presence of a catalyst, a compound of formula (I), wherein R1 and X2 are as defined, and X1 represents halogen, preferably Cl or Br, where R1, X1 and X2 may be the same or different, with a compound which is a hydrogen donor.

Abstract: Addition of an oxidation agent to completely or partially water-based organophosphate pesticide formulations or solid organophosphate pesticide formulations improves the chemical stability of the pesticide, minimizes formation of toxic isomeric compounds, and eliminates the development of mercaptan and sulfide smell.

Abstract: The compounds 3-(2,2-dichloro-3,3,3-trifluoro-1-hydroxypropyl)-2,2-dimethyl-(1R,cis)-cyc lopropane carboxylic acid, cis-3-(2,2-dichloro-3,3,3-trifluoro-1-hydroxypropyl)-2,2-dimethyl-cyclopro pane carboxylic acid and (1R,5S)-4-(1,1-dichloro-2,2,2-trifluoroethyl)-6,6-dimethyl-3-oxabicyclo[3. 1.0]hexan-2-one occur as intermediates in a process for the preparation of insecticidally active cyclopropane carboxylate esters, said process starting from 6,6-dimethyl-4-hydroxy-3-oxabicyclo[3.1.0]hexan-2-one (Biocartol) which is reacted with the compound CF.sub.3 --CC1X.sub.2 (X=halogen) in the presence of zinc.

Abstract: An improved process for the preparation of 2,3,5,6-tetrachloropyridine of the formula ##STR1## consists in that 3,3,5-trichloroglutarimide of the formule ##STR2## is reacted either a. with phosphorus trichloride or phosphorus oxytrichloride or mixtures thereof in the presence from the start of catalytic amounts of hydrogen chloride, followed by a conversion of polyphosphorous compounds formed into phosphorus oxytrichloride by supplying chlorine, optionally only after supplying further phosphorus trichloride, orb. with phosphorus trichloride and chlorine, optionally in the presence of phosphorus oxytrichloride as a solvent, followed by a dehydrochlorination of the reaction mixture and finally conversion of polyphosphorus compounds formed into phosphorus oxytrichloride by supplying chlorine, optionally only after supplying further phosphorus trichloride.Improved yields of a purer product are obtained.

Abstract: An improved process for the preparation of 2,3,5,6-tetrachloropyridine of the formula ##STR1## consists in that 3,3,5-trichloroglutarimide of the formule ##STR2## is reacted either a. with phosphorus trichloride or phosphorus oxytrichloride or mixtures thereof in the presence from the start of catalytic amounts of hydrogen chloride, followed by a conversion of polyphosphorous compounds formed into phosphorus oxytrichloride by supplying chlorine, optionally only after supplying further phosphorus trichloride, orb. with phosphorus trichloride and chlorine, optionally in the presence of phosphorus oxytrichloride as a solvent, followed by a dehydrochlorination of the reaction mixture and finally conversion of polyphosphorus compounds formed into phosphorus oxytrichloride by supplying chlorine, optionally only after supplying further phosphorus trichloride.Improved yields of a purer product are obtained.

Abstract: A herbicidal formulation which is a water-soluble powdery or granular free-flowing formulation comprising glyphosate acid (N-phosphonomethylglycine) and a surface-active agent that is a powdery or granular nonionic polyglycol ether of a straight chain, saturated, high molecular weight fatty alcohol having an average chain length of C.sub.16 -C.sub.18, about 25 units of ethylene oxide per mole of fatty alcohol and an HLB value of about 16, said formulation is a highly efficient herbicide.