IL33630A - Benzohydroxamates,their preparation and acaricidal compositions containing them - Google Patents

Description

New their preparation d acaricidal compositions containing NIPPON SODA COMPANYt LIMITED Element Observed Calculated value C H N Example of of 2 chloride in 20 ml of benzene were added slowly to a solution containing of and of pyridine in 20 of benzene at room temperature under agitation and the mixture was agitated for more thirty minutes under reflux s After the mixture was 40 of aqueous solution saturated with sodium chloride were added to the and then the crystals crude crystals were washed with water and and then recrystallized toluene to give of the white needle crystals having the melting point of 96 The elementary analysis values the crystals ormula were indicated as Element Observed value Calculated value C H N Example Preparation of C of chloride were added to a mixture containing of hydr oxylamine and 10 of sodium bicarbonate in 60 of water and 126 chloroform at room under The concentrations of the active ingredients in the acaricidal compositions of this invention vary according to type of and they for used in a range of 5 80 weight preferably 10 60 weight in wettable 5 70 weight preferably 10 50 weight in and 10 weight 1 5 weight percent in dust In the above formulation of the auxiliary agents or for inert mineral powders such as 1 vermjdculite and diatomaceous organic solvents such as formamide and dispersing agents such as sodium lignin sulfonate and and wetting agents such as arylsulfonate higher alcohol sulfate alkyl aryl alkyInaphthalene sulfonate and polyoxyethylene may be employed to the type of the formulation for combating Furthermore the composition may be applied as a mixture with other plant regulators and examples for the acaricidal illustrated as f ollows Powder Parts by Weight Compound 1 20 Higher alcohol sulfonate ester 5 Diatomaceous earth 75 These are mixed and micronized in jet pulverizer to particle size of 10 30 In practical use the micronized by mixture is diluted to a concentration of to of active Example Emulsifiable Concentrate Parts by Weight Compound 2 10 polyoxyethylene 5 Dimethylformamide 50 Xylene 35 These are mixed and In practical the solution b weight is diluted with water to a concentration of to active ingredient and this suspension is sprayed used for Example Dust Formulation Parts by Weight Compound 3 5 Talc Alkylaryl polyoxyethylene were mixed and crushed to fine The dust formulation is usually applied as dusting power at a rate of 3 to 5 per Example Mixed Wettable Powder Parts by Weight Compound 4 methylcarbinol Higher alcohol sulfonate ester 4 Sodium alkylnaphthalene sulfonate 2 Sodium lignin sulfonate Diatomaceous earth 63 These are micronized and applied following the cedure of Example In the Example 6 it is not intended to limit the wetting or dispersing carriers and solvent to the ones described by way of The compounds listed in Table 1 possess ver acaricidal activity compared to known The superior acaricidal effect of the novel compounds this invention are clearly illustrated by the following tests Table 2 Control is a commercial From the foregoing evaluation data it is apparent that compounds of this invention are effective Test Test for Control of Citrus red mite Mandarin orange leaves were cut off from a branch of the from drying plant put into petri dishes so as to prevent 30 adult female mites of Citrus red mite were laid on each of the One day the compounds of this invention were diluted to a specified concentration and sprayed on the After 3 days from adult mortality was the surviving and dead adult mites were removed and the number the deposited eggs was The effect the compounds or eggs was observed after 7 days from the removal of the adult mites and then the ovicidal activity was The results are shown in Table Table 3 From the foregoing evaluation data it is apparent that the compounds of s invention are superior insufficientOCRQuality

Claims (1)

1. insufficientOCRQuality