Pesticide flowables

Most of the milling runs presented in this paper were made on the small Crescent mills, particularly on Model 6000. This was done in an effort to fully explore the utility of this equipment as a laboratory tool for preparing very small samples of pesticide flowables. In these runs, a preemergence herbicide, dimethyl 2,3,5,6-tetrachloroterephthalate, was selected to serve as a model compound. This material has a melting point of 156 C and can be readily milled to the less than five micron size range. In the studies with the Crescent mills, a flaked technical was used which had been mortar and pestled and screened to less than 60 mesh feed material. 

A Computer-Based Technique for the Evaluation of Sedimentation Rates/Shelf Life of Pesticide Flowables... 

In the development and maintenance of a quality pesticide flowable formulation, the rate at which the suspension forms a non-redispersible sediment under various storage conditions is a highly important product characteristic which must be thoroughly evaluated. This paper will describe... 

The formation of non-redispersible sediment in a pesticide flowable formulation is often the primary cause of product failure during inventory/sheIf storage. In order to develop and maintain a quality pesticide flowable formulation, a formulator needs evaluation techniques which will enable him to quickly determine the relative stability performance of a sample in a non-subjective manner. Accurate sample characterization and early prediction of shelf life is also highly desirable. Many methods for flowable sample evaluation, such as sediment probing, are subjective and destructive to the integrity of the sample. Often, samples have to be aged at elevated temperatures to obtain measurable differences in stability performance within reasonable time constraints. The purpose of this paper is to describe equipment and methodology which can be utilized to measure the relative... 

This methodology has application and usefulness in the following areas pertinent to pesticide flowables. 

Uses DispersanL wetting agenL and compatibilily agent for pesticide flowable formulations... 

Agricultural (Ag) formulations that are commonly diluted and applied by means of spray equipment include water soluble liquids, emulsifiable concentrates, wettable powders, and flowable suspensions. The choice of which formulation to develop normally depends upon the solubility properties of the technical pesticide. Scientists often must also consider manufacturing costs, field efficacy and product toxicity. 

Tpo understand the physical and colloidal chemical aspects of pesticidal formulations research, one must first understand the objectives of the formulations chemist in his work. Simply speaking, the formulations chemist must take the pure organic chemical pesticide and put it in a usable form for field use. These forms include wettable powders, emulsifiable concentrates, dusts, granules, water-soluble concentrates, flowables, and an aerosol, to name a few types of concentrates. The formulations chemist desires to put together a formulation that (1) is easy and eco-... 

The first chapter of the book is an overview of the most active pesticide formulation research areas, including comments on topics not covered in the symposium because of time limitations. The subsequent chapters deal in depth with the main topics (Flowables, Computer Applications, and Controlled Release Formulations) and general topics. 1 feel this book fulfills a very important need—the enhancement of communication among pesticide formulators and between pesticide formulators and the rest of the pesticide community. 

The active ingredient (liquid or dry) is incorporated by a special process in small, permeable sph s of a polymer or plastic, 15 to 50 pm (1 pm = 10 m) in diameter. These spheres are then mixed with wetting agents, thickeners, and water to give the desired concentration of pesticide in a flowable form, usually 2 pounds per gallon. After the required dilution, the pesticide spray mixture can be applied with conventional sprayers. The pesticide is released gradually over a period of time. 

Benzoic acid, 5-(2,4-dichlorophenoxy)-2-nitro-, methyl ester Bifenox BRN 2170169 Caswell No. 561AA CCRIS 7158 5-(2,4-Diohlorophenoxy)-2-nitrobenzoic acid methyl ester MC-4379 Modown Modown 4 Flowable EPA Pesticide Chemical Code 104301 MC-4379 Methyl 5-(2,4-dichlorophenoxy)-2-nltrobenz-oate Modown, Selective herbicide used for control of annual broad-leaved weeds and some grasses in cereals, maize, sorghum, soybeans, rice and some other crops. Registered by EPA as a herbicide (cancelled). Yellow crystals mp = 84-86 poorly soluble in H2O (0.000035 g/100 ml), more soluble in MezCO (31.5 g/100 ml), chlorobenzene (44,3 g/100 ml), xylene (25.8 g/100 ml), EtOH (< 4 g/100 ml) slightly soluble in aliphatic hydrocarbons LDso (rat orl) > 6400 mg/kg, (mus orl) = 4556 mg/kg, (rbt der) > 20000 mg/kg LC50 (rat ihl) > 200 mg/l air, (duck, pheasant 8 day dietary) > 5000 mg/kg diet, (rainbow trout 96 hr.) = 0.87 mg/l, (bluegill sunfish 96 hr.) = 0.64 mg/l. Aventis Crop Science. 

Hazardous Decomp. Prods. Heated to decomp., emits toxic fumes of NOx Uses Bactericide for flowable pesticide formulations, metalworking industries... 

Synonyms Formaldehyde-naphthalenesulfonic acid copolymer Naphthalenesulfonic acid, polymer with formaldehyde Formula (C10H9O3S CH20)x Properties M.w. 238.264 anionic Uses Dispersant for wettable powds., dry flowables, and aq. suspension pesticides water reducer for concrete moldings Manuf./Distrib. Charkit http //www.charkit.com-, Hampshire http //www.dow.com/hampshire-, R.T. Vanderbilt http //www.rtvanderbiit.com-, Rhodia HPCII http //www.rhodia-hpcii.com-, Rutgers Org. http //www.ruetgers-organics-corp.com... 

S-194 has outstanding suspending features and remarkable compatibility with salts, making it significant in agricultural applications, specifically flowable pesticides and liquid fertilizers. 

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