Sodium isopropylate

Xanthate esters are prepared by reaction of isopropyl alcohol and carbon disulfide [75-15-0]. Isopropyl xanthates have wide use ia mineral flotation (qv) processes, and sodium isopropyl xanthate [140-93-2], C4HyOS2Na, is a useful herbicide for bean and pea fields (see Herbicides) (30). 

Fig. 2. Decomposition of commercial sodium isopropyl xanthate solutions. Courtesy of Cytec Industries Inc.

Benzoyl chloride and sodium isopropyl xanthate gave a mixed anhydride that was stable to pyridine catalyst, but a 2-year-old sample had turned to isopropyl ben2oate (16). 

In addition to a continued increase in the number of use patents in these fields, a new use of xanthates as inhibitors of fertiliser nitrogen transformation in soil has been reported, as well as the use of certain metal xanthates as color developers for image-recording materials (113,114) (see Fertilizers Color photography). For several years, sodium isopropyl xanthate was used as an intermediate in the manufacture of saccharin (see... 

Salts with the same structure have been put forward to explain the detonations or ignitions that were observed during several accidents involving DMSO and sodium hydride, sodium isopropylate and potassium tert-butylate. However, it is known that the last-named base causes the ignition of nearly all organic compounds. 

Diisopropyl methylphosphonate is an organophosphate compound that was first produced in the United States as a by-product of the manufacture of the nerve gas isopropyl methylphosphonofluoridate (GB, or Sarin) (ATSDR 1996 EPA 1989 Robson 1977, 1981). It is not a nerve gas and is not a metabolite or degradation product (Roberts et al. 1995). Diisopropyl methylphosphonate constitutes approximately 2-3% of the crude GB product, but it is neither a metabolite nor a degradation product of GB (EPA 1989 Rosenblatt et al. 1975b). Diisopropyl methylphosphonate is not normally produced except for its use in research. One method of producing diisopropyl methylphosphonate is to combine triisopropyl phosphite and methyl iodide. The mixture is then boiled, refluxed, and distilled, yielding diisopropyl methylphosphonate and isopropyl iodide (Ford-Moore and Perry 1951). Diisopropyl methylphosphonate may also be prepared from sodium isopropyl methylphosphonate by a reaction at 270° C, but a portion of the resulting diisopropyl methylphosphonate is converted to trimethylphosphine oxide at this temperature (EPA 1989). 

A procedure that has been widely used for spray residues is the separation of the residue from the sample by extraction with an organic solvent, usually benzene. After most of the solvent has been removed, the residue is treated with sodium and isopropyl alcohol and the chloride ion is estimated by standard methods. Carter 10) has determined in this manner DDT residues on a number of crops, and he has recommended the adoption by the Association of Official Agricultural Chemists of the method as a tentative one for DDT 11). Koblitsky and Chisholm 42) have determined DDT in soil samples by the sodium-isopropyl alcohol procedure after removing the DDT by extraction with an azeotropic mixture of two volumes of benzene and one volume of isopropyl alcohol. 

Under regulations for the enforcement of the Federal Insecticide, Fungicide, and Rodenticide Act, products containing over 50 wt % sodium isopropyl xanthate must bear the label Caution. Irritating dust. Avoid breathing dust, avoid contact with skin and eyes . Rubber goods in repeated 1755... 

Acetamino-N-(n-butyl)-2-propargyloxybenzamide was obtained by reaction of 5-acetylamino-N-butyl-2-hydroxybenzamide with propargylbromide in the presence of sodium, isopropyl alcohol and sulfuric acid. 

Fig. 6.4. Change in bubble size with time (experiments 1 to 6) surfactant sodium isopropyl naphthalene...

Fig. 1. SolubiHty of some commercial xanthates. (—), Sodium isobutji xanthate (-), sodium ethji xanthate (-), sodium isopropyl xanthate ( )>...

Accelerators used include hexamine, diphenyl guanidine, ethylidene aniline, mercapto-benzothiazole, dibenzothiazole disulfide, N-Cyclohexyl benzothiazole sulfenamide, sodium diethyl dithiocarbamate, tetramethylthiuram disulfide, tetraethyl thiuram disulfide, dipentamethylene thiuram tetrasulfide, sodium isopropyl xanthate, zinc butyl,... 

Aeroxanthate 343 Ai3-18899 Caswell No. 788 EINECS 205-443-6 EPA Pesticide Chemical Code 076301 Good-rite NIX HSDB 5633 0-lsopropyl sodium dithio-carbonate Isopropyixanthic acid, sodium salt Isopropyixanthogenan sodny Natrium-O-isopropyl-dithiokarbonat NIX NSC 35596 Proxan sodium Proxan-sodium Sodium isopropyl xanthate Xanthic acid, isopropyl-, sodium salt Z 11, Used in the mining industry and as a weed control in bean and pea crops. Am. Cyanamid. 

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