Captan

Dilute sodium hydroxide solution. Carboxylic acids (RCOOH), sulphonic acids (RSO3H), phenols (ArOH), thiophenols (ArSH), mer-captans (RSH), imides (RCONHCOR), aryl sulphonamides (AxSOjNHj), arylsulphonyl derivatives of primary amines (AxSOjNHR), oximes (RCH=NOH), primary and secondary nitro compounds (RCH=NOOH and RjC=NOOH-oci forms), and some enols (e.g., of 1 3-diketones... 

Thiols have a marked ten dency to bond to mercury and the word mercaptan comes from the Latin mer curium captans which means seizing mercury The drug dimercaprol is used to treat mercury and lead poisoning It IS 2 3 dimercapto 1 propanol... 

Heterocyclics. The heterocychc compounds used as industrial antimicrobial agents are Hsted in Table 9. Captan and Folpet are agricultural ... 

Uses. The principal commercial appHcation for trichloromethanesulfenyl chloride is as an intermediate for the manufacture of fungicides, the most important being captan (A/-(trichlotomethylthio)-4-cyclohexene-l,2-dicatboximide) [133-06-2] (1) and folpet (/V-(tricblorometbyltbio)pbtba1 imide)... 

Captan (7V-tricblorometbylmercapto-cyclobex-4-ene-l,2-dicarboxamide) [133-06-2] M 300.5, m 172-173". Crystd from CCI4. Large quantities internally cause diarrhoea and vomiting. 

Canadian Plastics Industry Association (CPIA), 259 Canadian Pollution Prevention Information Clearinghouse (CPPIC), 281, 301 CANOPY , metribuzin, 34 Cantharidin, 34 Caprolactam, 34 Captafol, 34 Captan, 35... 

CAPTAN SC , captan, 35 Carbachol chloride, 35 Carbagas, 156, 203 Carbamic acid ethyl ester, 35 Carbaryl, 35... 

Peifluorinated nitriles are highly electrophihc compounds because of the adjacent electron-accepting substituent Therefore, the addition of amines, alcohols, and mer-captans forming amidines, imidates, and thiobnidates is well-documented [63]. 

The bulk of derivatives are obtained by the displacement of CO by other ligands. These include phosphines and other group 15 donors, NO, mer-captans and unsaturated organic molecules such as alkenes, alkynes and cyclopentadienyls. 

Mercaptans were discovered in 1834 by W. C. Zeise (pp. 930, 1167) who named them from the Latin mercurium captans, catching mercury. 

Figure 15.13 Comprehensive two-dimensional GC chromatogram of a supercritical fluid exti act of spiked human semm. Peak identification is as follows 1, dicamha 2, tiifluralin 3, dicliloran 4, phorate 5, pentachlorophenol 6, atrazine 7, fonofos 8, diazinon 9, cWorothalonil 10, terhufos 11, alachlor 12, matalaxyl 13, malathion 14, metalochlor 15, DCPA 16, captan 17, folpet 18, heptadecanoic acid. Adapted imm Analytical Chemistry, 66, Z. Liu et al., Comprehensive two-dimensional gas chromatography for the fast separation and determination of pesticides exuacted from human senim , pp. 3086-3092, copyright 1994, with pemiission from the American Chemical Society.

Refiners use sweetening processes to remove mcr-captans that give a vei y unpleasant odor to gasolines and middle distillates (the skunk uses mercaptans to protect itself). This is done by washing the hydrocarbon stream with a caustic solution followed by a wash with water to remove die caustic. 

Direct measurements on metals such as iron, nickel and stainless steel have shown that adsorption occurs from acid solutions of inhibitors such as iodide ions, carbon monoxide and organic compounds such as amines , thioureas , sulphoxides , sulphidesand mer-captans. These studies have shown that the efficiency of inhibition (expressed as the relative reduction in corrosion rate) can be qualitatively related to the amount of adsorbed inhibitor on the metal surface. However, no detailed quantitative correlation has yet been achieved between these parameters. There is some evidence that adsorption of inhibitor species at low surface coverage d (for complete surface coverage 0=1) may be more effective in producing inhibition than adsorption at high surface coverage. In particular, the adsorption of polyvinyl pyridine on iron in hydrochloric acid at 0 < 0 -1 monolayer has been found to produce an 80% reduction in corrosion rate . 

Pesticides, e.g. aminocarb, captan, difolatan, landrin, rotenone... 

Pesticides, e.g. aminocarb, captan, difolatan, landrin, rotenone 200 °C, 45 min Induction of fluorescence in weakly [ fluorescent or nonfluorescent pesticides and amplification of natural fluoies-cence. There are some differences between basic and acidic aluminium oxide layers. 

Tho garden fungicide Captan (2) is made from (1). This is an imide - a double atnide - and so both bonds between carbonyl and nitrogen can be disconnected,... 

The various oxidation states of sulfur have been determined by polarography. The electrochemical oxidation of sulfide ions in aqueous solution may lead to the production of elementary sulfur, polysulfides, sulfate, dithionate, and thiosulfate, depending on the experimental conditions. Disulfides, sulfoxides, and sulfones are typical polarographically active organic compounds. It is also found that thiols (mer-captans), thioureas, and thiobarbiturates facilitate oxidation of Hg resulting thus in anodic waves. 

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