Pesticides triazine derivatives

Triazine derivatives play an important role as polymers, pesticides (herbicides), reactive dyes, optical brighteners and LIV absorbers. Some triazine compounds also exhibit important physiological properties in pharmaceutical applications. The parent compound has no industrial application, although it can be used to prepare a variety of other heterocyclic systems because it is a preparative alternative to hydrogen cyanide. The starting materials for the various applications are often melamine, cyanuric chloride and cyanuric acid. 

Triazine pesticides, herbicides derived from triazine (101-05-3), including atrazine. 

Dwell time, or the time the molecule was actually in the lamp unit, and concentration were two parameters that affected the rate of degradation. Mass spectra of the trimethylsilyl (TMS) derivatives of atrazine subjected to UV-ozonation revealed a number of dehalogenated, dealkylated s -triazines, paraquat yielded the 4-picolinic acid, and 2,4-D gave oxalic acid, glycolic acid and several four-carbon oxidation products. The economics of UV-ozonation as a pretreatment for land disposal compares favorably with incineration and other options open to the small pesticide user. 

Fc = semi empirical polarity correction factor derived for several classes of compounds (i.e., acetanilides = 0.31 amides = 0.66 halogenated aromatic hydrocarbons = -0.20 non-halogenated aromatic hydrocarbons = -0.27 carbamates = 0.27 dinitroanilines = 0.19 organophosphorous pesticides = 0.01 PAHs = -0.93, triazines = 0.24, triazoles = -0.22 ureas = 0.19). 

The discovery of fungicidal activity in guanidine, triazine, and an-thraquinone derivatives is opening new areas of fungicide research, and a few pesticides of these types are being developed commercially. 

Urea herbicides form, along with phenoxy derivatives and triazines, the most important agricultural herbicide group. Since their discovery almost thirty years ago several tens of thousands of urea derivatives have been synthesised in research laboratories, and almost all of the major pesticide manufactures have marketed herbicides with a urea derivative as the active substance. 

The long-term usage of persistent organochlorine pesticides, such as DDT, HCH, herbicides of the s-triazine group resulted in soil contamination. More than 20% of the soils studied in the Ukraine contained DDT and its derivatives 4% of soils were polluted with HCH. The considerable quantities of DDT were found in breast milk, blood and fat tissues of humans. This is su )orted by the data obtained during the period of 1981-1985 [10] (see also chapters by Franekic, Gundy, and Vasilescu). 

Baez, M. E., Rodriguez, M., Lastra, O., and Contreras, P., Sohd-phase extraction of organophosphorus, triazine, and triazole-derived pesticides from water samples. A critical study, J. High Resolut. Chromatogr., 20, 591-596, 1997. 

Pesticides containing metals and chlorinated hydrocarbons such as DDT and aldrin belong to the highly persistent substances persistent ones are urea and triazin pesticides medium persistent ones include amides and derivatives of benzoic acid less persistent pesticides are based on phenoxy-... 

A recent paper by EPA reviewed the results of analysis of about 300 pesticides for nitrosamines. A large number of amide, carbamate, organophosphate, triazine, urea derivatives and miscellaneous nitrogen-containing pesticides did not contain... 

Amylopectins. — The effects of acrylamide graft copolymerization on the solution properties of amylopectin have been discussed. Amylopectin has been dyed with DyAmyl-L and used in this form as a substrate for the assay of a-amylase. Amylopectin has been treated with isocyanate derivatives of 4-amino-( 1,1-dimethyl ethyl)-3-(methylthio)-l,2,4-triazin-5(4/f)-one ( metribuzin ) or acid chloride derivatives of 2,4-dichlorophenoxyacetic acid ( 2,4-D ) and 2,2-dichloropropionic acid ( dalapon ), to produce controlled-release polymeric pesticide systems. The solvent system utilized for these reactions, a lithium chloride or bromide salt in AW-dimethylacetamide, allows dissolution of the reactant salt and facilitates analysis of the polymer product by such techniques as i.r., U.V., and n.m.r. spectroscopies and gel permeation chromatography. Derivatives of other naturally occurring polysaccharides, including amylopectin, cellulose, chitin, and dextran, were also prepared. 

The use of chlorinated pesticides is expected to decline because of environmental concerns. The toxic effects associated with pentachlorophenol will impact its production and, in turn, the chlorine consumption in this market. ITie use of chlorine in producing chlorinated isocyanurates, chlorinated paraffins, and ethyleneamines is projected to grow over the next several years. However, the market for cyanuric chloride is expected to decline as a result of the flat demand for its primary derivative, triazine herbicides. 

Digital glycosides, nucleosides, pesticides, pharmaceuticals, phospholipids, steroids DNA adducts, DNA and RNA fragments, dyes for food, inorganic ions, steroids Amines, amino acids, inorganic ions, peptides, purine and pyrimidine derivatives Amines, amino acids, indole derivatives, ohgopeptides, polyamines, sulfonamides Barbiturates, carboxylic acid esters, fatty acid derivatives, nitrophenols, polychlorobiphenyls (PCBs), peptides, pesticides, phenols, steroids, surfactants, triazines... 

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