Monoethyl phosphate

The zwitterionic form of monoethyl phosphate is unlikely to have a significant lifetime because loss of a proton from cationic oxygen would be very fast. 

Soil. Cleavage of the molecule yields diethyl phosphate, monoethyl phosphate, and phosphoric acid (Hartley and Kidd, 1987). 

Monochlorobiphenyls, see PCB-1232, PCB-1260 Monochlorodibenzofuran, see PCB-1248 Monochlorovinyl acids, see Permethrin anfi-Monodechlorodieldrin, see Dieldrin sjn Monodechlorodieldrin, see Dieldrin Monoethyl phosphate, see Sulfotepp Monoethyl phthalate, see Diethyl phthalate Monohydroxychlorobiphenyl, see... 

Orthophosphoric acid also forms three series of esters,26 e.g., triethyl phosphate, (C2H6)8P04, or phosphoric ether, is a neutral liquid, insoluble in water it boils at 215°, and has a sp. gr. 1-072, at 12° the diethyl phosphate, (C2H5)2HP04, or diet,hylphosphoric add, acts as a monobasic acid and monoethyl phosphate, (C2H6)H2P04, or ethylphosphoric acid as a dibasic acid. 

The photochemical cleavage of the phosphorus-carbon bond in many benzylic phosphonic acids occurs through intramolecular electron transfer and gives monomeric metaphosphate together with substituted toluenes and, in many cases, 1,2-diarylethanes. The ultraviolet irradiation of (4-nitrobenzyl)phosphonic acid dianion in solution in aqueous ethanol yields l,2-bis(4-nitrophenyl)ethane, 4-nitrotoluene, H3PO4 and monoethyl phosphate (Scheme Irradiation of the same acid in the presence of dbu (other tertiary... 

Under certain conditions compounds are obtained which contain halogen, such as PBr2(OC2H5). Esters can also be made by the action of the silver salts of the acids on alkyl iodides. Monoethyl phosphate can be prepared by treating alcohol with phosphoric acid it is often called ethyl phosphoric acid —... 

Fig. 9. Effect of salt on > P chemical shift of (A) triethyl phosphate, (B) diethyl phosphate, (Q monoethyl phosphate, and (D) orthophosphate. —, Represents added tetramethylammonium chloride —, represents added sodium chloride. From Costello et al. (1976). Copyright 1976 American Chemical Society.

The rate of stripping or the stripabiUty on cataly2ed urethane and epoxy resin finishes can be increased by adding formic acid, acetic acid, and phenol. Sodium hydroxide, potassium hydroxide, and trisodium phosphate [10101-89-0] may be added to the formula to increase the stripabiUty on enamel and latex paints. Other activators include oleic acid [112-80-17, trichloroacetic acid [76-85-9], ammonia, triethanolamine [102-71-6], and monoethyl amine. Methylene chloride-type removers are unique in their abiUty to accept cosolvents and activators that allow the solution to be neutral, alkaline, or acidic. This abihty gready expands the number of coatings that can be removed with methylene chloride removers. 

Figure 6-18. pH-rate profile for the hydrolysis of monoethyl dihydrogen phosphate in aqueous solution at 100.1°C. 

Of the three organic phosphorus insecticides—hexaethyl tetraphosphate, tetraethyl pyrophosphate, and parathion—the first two have been shown to be mixtures (36) that contain tetraethyl pyrophosphate as the principal active ingredient. Several methods have been proposed for the determination of this compound in the commercial products (25, 35). All are based on the separation of the tetraethyl pyrophosphate from the related ethyl phosphates, followed by its hydrolysis to diethyl orthophosphoric acid and titration with standard alkali. Both hexaethyl tetraphosphate and tetraethyl pyrophosphate are soluble in water and are rapidly hydrolyzed to monoethyl and diethyl orthophosphoric acid. This rapid hydrolysis to nontoxic products greatly limits the duration of the in- secticidal effectiveness of tetraethyl pyrophosphate, but it also eliminates the danger of toxic residues on the crops treated. 

Methyl vinyl ketone, 31-32, 225, 676, 697-703, 887, 970, 974,1112 Methyl a- and /5-xylopyranoside, 834 DL-Mevalonic acid 5-phosphate, 811 Mevalonolactone, 146, 809-810 (R and S), 809 Michael reaction, 1069 Mitomycin, 941 Mobay, 1171 Molecular rotations, 297 Molecular sieves, 333, 431, 703-705, 739 Mondur TD-80,1171 Monobromopentaerythritol, 450 Monochlorourea, 1107,1267 Monoethylamme-borane, 16 Monoethyl raalonate, 523 Monomethylamine-borane, 16 Monoperoxytucdnic acid, an Penuodnlc acid... 

A phosphonate analogue (8) of pyridoxal 5 -phosphate (9) which contains a 5 -phosphonomethyl group has been prepared by a Michaelis-Becker reaction from the protected pyridoxyl chloride (10). Both (8) and its monoethyl ester... 

Calcium 2-benzosulfimide Calcium o-benzosulfimide. See Calcium saccharin Calcium biphosphate. See Calcium phosphate monobasic monohydrate Calcium phosphate monobasic anhydrous Calcium bis(dihydrogenphosphate) monohydrate. See Calcium phosphate monobasic monohydrate Calcium bis [0-ethyl (3,5-di-t-butyl-4-hydroxybenzyl) phosphonate]. See Calcium bis [monoethyl (3,5-di-t-butyl-4-hydroxybenzyl) phosphonate]... 

Diethyl H-phosphonate is oxidized by permanganate to the corresponding phosphates [74]. The process is pH-dependent and becomes more rapid at higher pH. Monoethyl H-phosphonate is also formed as a product of the subsequent oxidation of the initially obtained diethyl phosphate. 

Key abbreviation AA, ascorbic acid ADP, ascorbyl dipalmitate AG, ascorbyl glucoside AP, ascorbyl palmitate ARB, arbutin AZA, azelaic acid HQ, hydroquinone HQDM, hydroquinone dimethyl ether HQMB, hydroquinone monobenzyl ether HQME, hydroquinone monoethyl ether HQMM, hydroquinone monomethyl ether HQMP, hydroquinone monopropyl ether HQMPh, hydroquinone monophenyl ether KA, kojic acid MAP, magnesium ascorbyl phosphate. 

The phosphorylation of imidazole by two activated phosphate diesters and a triester gave phosphorylimidazole derivatives (62-66), that were stable enough in aqueous solution, and were observed and identified by ESI-MS/MS and NMR. Half-lives ranging from hours to days (in the case of the monoethyl ester) showed that it was possible to design molecules with variable half-lives with a potential to be used for biological intervention experiments as possible inhibitors of biosignaling processes or as haptens for the generation of antibodies. ... 

Monobutyl phosphate, M-00338 Monochrome red G, see D-00437 Monodansylcadaverine, see A-00296 Mono(2-ethylhexyl) phosphate, M-00339 Monoethyl (2-phenylethenyl)phosphonate, in P-00129... 

Environmental effects on chemical shifts are generally smaller than the intrinsic effects discussed in previous sections. Lemer and Kearns (1980) have shown that P shifts of phosphate esters are modestly sensitive to solvent effects (Fig. 8), and Costello et al. (1976) have noted similar sensitivity of P shifts of orthophosphate, diethyl phosphate, and monoethyl orthophosphate to salt (Fig. 9). 

---