DiThiophosphate, sodium

Phosphorodithioio acid, 0,0-diethyl ester, sodium salt. 0,0-Diethyldithiofosforecnan sodny EINECS 222-079-2 Ethyl sodium phosphorodithioate Hostaflot LET HSDB 2606 Phosphorodithioic acid, 0,0-diethyl ester, sodium salt Sodium aerofloat Sodium diethyl dithiophosphate Sodium diethyl phosphorodithioate Sodium 0,0-diethyl dithiophosphate. 

Phosphorodithioic acid, 0,0-dimethyl ester, sodium salt 0,0-Dimethyldithiofosforecnan sodny EINECS 247-636-7 Methyl sodium phosphorodithioate Phosphorodithioic acid, 0,0-dimethyl ester, sodium salt Sodium dimethyl dithiophosphate Sodium dimethyl phosphorodithioate Sodium 0,0-dimethyl phosphorodithioate Sodium 0,0-dimethyl dithiophosphate. 

Watkinson [1988] lists some surfactants used for their dispersing action in organic liquids. He includes amongst them organic and metal sulphonates metal phenolates metal dialkyl dithiophosphates sodium dialkyl sulphosuccinates polyoxyethylene alkyl and alicyclic amines monethanol ammonium phosphate salts co-polymers of N-substituted formamide fatty acid phosphates... 

Sodium 0,0-diethyl dithiophosphate. See Sodium diethyl dithiophosphate Sodium diethylenetriamine penta (methylene phosphonate)... 

Sodium 0,0-diisoamyl dithiophosphate. See Sodium diisoamyl dithiophosphate Sodium 1,2-... 

Sodium 0,0-diisobutyl dithiophosphate. See Sodium diisobutyl dithiophosphate Sodium di (isobutyl) dithiophosphinate Empihcal CsHi8NaPS2 Formula (CH3CHCH3CH2)2PS2Na Uses Flotation agent for metallic sulfides improves the recovery of silver from complex base metal ores and in removing cadmium from wet process phosphoric acid Trade Name Synonyms Aerophine 3418A [Cytec Ind.. http //www.cytec.com]... 

Sodium 0,0-diisopropyl dithiophosphate. See Sodium diisopropyl dithiophosphate Sodium diisopropyl naphthalene sulfonate Empirical CisHigNaOsS Propehies Powd. m.w. 314.38 anionic Uses Emulsifier, dispersant in emulsion polymerization, paints solubilizer, wetting... 

Sodium 0,0-di-(methylamyl) dithiophosphate. See Sodium di-(methylamyl) dithiophosphate Sodium dimethyl arsenate Sodium dimethylarsinate Sodium dimethylarsonate. See Sodium cacodylate... 

Potassium amyl xanthate Potassium ethyl xanthate Sodium isobutyl xanthate Sodium isopropyl xanthate flotation collector, gold ore Sodium di-s-butyl dithiophosphate flotation collector, iron sulfide Ammonium dibutyl dithiophosphate flotation collector, lead Ammonium dibutyl dithiophosphate Sodium diethyidithiocarbamate... 

Sodium di-s-butyl dithiophosphate Sodium diethyl dithiophosphate Sodium diisoamyl dithiophosphate... 

Sodium diisobutyl dithiophosphate Sodium diisopropyl dithiophosphate Sodium di-(methylamyl) dithiophosphate Stearyl hydroxyethyl imidazoline flotation collector, zinc sulfide ore Sodium di-s-butyl dithiophosphate flotation depressant Acacia Calcium ferrocyanide Carboxymethylcellulose sodium Hydrofluoric acid Potassium ferricyanide Potassium ferrocyanide Sodium metabisulfite flotation depressant, copper ores Dicyandiamide Guanidine nitrate 2-Mercaptoethanol Phosphorus pentasulfide Quinolinic acid... 

Dialkyl and diaryl dithiophosphoric acids are the bases of many high pressure lubricants, oil additives (see Lubrication and lubricants), and ore flotation chemicals (see Mineral recovery and processing). Organophosphoms insecticides such as Parathion are made by chlorination of the appropriate diaLkyl dithiophosphate and subsequent reaction of the intermediate dialkyl thiophosphoric chloride with sodium -nitrophenolate according to the following (see... 

The pH of the pulp to the flotation cells is carefliUy controlled by the addition of lime, which optimizes the action of all reagents and is used to depress pyrite. A frother, such as pine oil or a long-chain alcohol, is added to produce the froth, an important part of the flotation process. The ore minerals, coated with an oily collected layer, are hydrophobic and collect on the air bubbles the desired minerals float while the gangue sinks. Typical collectors are xanthates, dithiophosphates, or xanthate derivatives, whereas typical depressants are calcium or sodium cyanide [143-33-9] NaCN, andlime. 

Aetivators. These are used to make a mineral surface amenable to collector coating. Copper ion is used, for example, to activate sphalerite (ZnS), rendering the sphalerite surface capable of absorbing a xanthate or dithiophosphate collector. Sodium sulfide is used to coat oxidized copper and lead minerals so that they can be floated by a sulfide mineral collector. 

The zinc. salts of these acids are extensively used as additives to lubricating oils to improve their extreme-pressure properties. The compounds also act as antioxidants, corrosion inhibitors and detergents. Short-chain dialkyl dithiophosphates and their sodium and ammonium salts are used as flotation agents for zinc and lead sulfide ores. The methyl and ethyl derivatives (RO)2P(S)SH and (RO)2P(S)CI are of particular interest in the large-scale manufacture of pesticides such as parathion, malathion, dimethylparathion, etc. For example parathion. which first went into production as an insecticide in Germany in 1947. is made by the following reaction sequence ... 

Figure 2.28 Critical pH curves for flotation with sodium dithiophosphate as collector for some sulfidic minerals.

When chlorine reacted with sodium diethyl dithiophosphate in the presence of an organic solvent, the desired compound was obtained in good yield. The reaction of phosphorus pentachloride on the sodium salt resulted in the same product. Thiophos-phoryl chloride is a probable by-product of this reaction. It was later found that diethyl dithiophosphoric acid could be chlorinated in an organic solvent without the intermediate preparation of the sodium salt. 

Figure 5.1 Relationship between concentration of sodium diethyl dithiophosphate and critical pH dashed line is the result calculated based on Eqs. (5-4), (5-7) or (5-8) solid line is the data from Sutherland and Wark (1955)...

Physical Form, brown to black oily liquid new mineral-based crankcase oil contains petrochemicals (straight-chain hydrocarbons, aromatic hydrocarbons, and polyaromatic hydrocarbons or PAH) plus stabilizers and detergents including zinc dithiophosphate, zinc diaryl or dialkyl dithiophosphates (ZTDP), calcium alkyl phenates, magnesium, sodium, and calcium sulfonates, tricresyl phosphates, molybdenum disulfide, heavy metal soaps, cadmium, and zinc. ... 

Because of the lack of information in the literature on the radical reactions of compounds of quinquevalent phosphorus, it is impossible to postulate a readily acceptable mechanism for the oxidation of zinc dialkyl dithiophosphates. Colclough and Cunneen (7) rejected immediately the possibility of hydrogen abstraction, but in view of the present results serious consideration has been given to this reaction. During this work it was shown (15) that abstraction of hydrogen from trialkyl phosphates, trialkyl phosphonates, and sodium dialkyl phosphates can occur at room temperature in an aqueous medium in the presence of hydroxy radicals. 

In general, the complexes are prepared by mixing aqueous or alcoholic solutions of the sodium, ammonium or potassium salt of the ligand and CrCl3-6H20, sometimes with Zn dust present.997,998 However, in some cases anhydrous conditions are necessary to prevent the formation of polymeric hydrolysis products,986 and dithiophosphate is much more resistant to temperature and extremes of pH than dithiocarbamate or xanthate. In the preparation of L3, where L is 4-aminophenazonedithiocarbamate, aqueous Cr(N03)3 was added to the reaction mixture from the preparation of the ligand.999... 

Aryl- and 5-heteroaryl-l,2,3,4-thiatriazoles 9 are quite stable and can also be prepared by the reaction of aromatic (respectively heteroaromatic) carbodithioates <1961ACS1104> or A-thioacyl dithiophosphates 141 <2002J(Pl)1271> with sodium azide (Equation 12). 

Tellurium bis[0(0-dialkyl dithiophosphates] were formed as yellow, rapidly solidifying oils when sodium dialkyl dithiophosphates were added at 20c to hydrochloric acid solutions of tellurium dioxide2. 

Tellurium Bis[0,0-diethyl dithiophosphate]2 1.6 g(10 mmol) of tellurium dioxide are dissolved in 5 ml of hot, concentrated hydrochloric acid, the solution is cooled to 20°, 15 m/of water arc added, the mixture is stirred, and 8.3 g (40 mmol) of sodium diethyl dithiophosphate dissolved in 20 ml of water are added slowly. The resultant solution is decanted from the yellow solid formed, the solid is washed with cold ethanol, and recrystallized from ethanol or benzene yield 3.8 g (76%) m.p. 66° (dec.). 

The 5-substituted 1,2,3,4-thiatriazoles 758 are prepared by the generation of intermediate azidothiocarbonyl compounds 757 followed by 1,5-electrocyclic reaction (Scheme 326). The intermediate compounds 757 have never been isolated they can be generated by treatment of derivatives of thiohydrazides 756 with either nitrous acid or with arenediazonium salts, and in reactions of thiophosgene (or dithiocarboxylates) 755 (X = Cl, SR) with either sodium- or trimethylsilyl azide (Scheme 326) . For example, thiatriazoles 760 can be prepared in high yields by the reaction of or A-thioacyl dithiophosphates 759 with sodium azide (Scheme 327) <2002J(P1)1271>. 

Trisodium dithiophosphate, Na3(PS202).llH20, has been prepared from P2S6 and a rather concentrated solution of sodium hydroxide. The solution was heated to 50° to 55° C. until the trithio-salt was decomposed. The salt was precipitated by alcohol, and when re-crystallised from water appeared as colourless six-sided prisms.5 The ammonium salt, (NH4)3(PS202).2H2O, was prepared similarly from aqueous ammonia and P2S5. From these soluble thiophosphates those of the heavy metals may be obtained by double decomposition.5... 

The formation of desaurins from ketones, carbon disulfide, and base 1275,1281,1282,1285-1290 believed to involve nucleophilic attack on a thioketene by the dianion of a 1,1-dimercaptoalkene, as shown for the synthesis of 572. Related syntheses involve the use of thiophosgene instead of carbon disulfide and the use of diazoalkanes or phosphonium and sulfonium ylides instead of a ketone and base. Treatment of perfluoroiso-butylene with fluoride ion and elemental sulfur in a dipolar, aprotic solvent ° °° or with sources of anionic sulfur (potassium sulfide, sodium hydrosulfide,potassium thiocyanate,sodium thiosulfate, dithiocarbamate salts, dithiophosphate salts ) give the dimer (573) of bis(trifIuoromethyl)-thioketene. Similarly, other 2,4-bis(methylene)-l,4-dithietanes are obtained by treating 2,2-dichlorovinyl ketones with anionic sulfur re-... 

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