5810-88-8

Usage

Uses

Used in Lubricant and Motor Oil Industry:
O,O-bis(2-ethylhexyl) hydrogen dithiophosphate is used as an anti-wear and antioxidant agent for providing protection against friction, wear, and corrosion in mechanical systems. Its application is particularly beneficial in engines and industrial machinery, where it ensures the longevity and efficiency of the equipment.
Used in Heavy-Duty Equipment Maintenance:
In the heavy-duty equipment industry, O,O-bis(2-ethylhexyl) hydrogen dithiophosphate is used as a critical additive to enhance the performance and durability of machinery under demanding conditions such as high temperature and pressure. Its inclusion in lubricants helps in maintaining the machinery's operational integrity and reducing the need for frequent repairs or replacements.
Used in Enhancing Lubricating Properties:
O,O-bis(2-ethylhexyl) hydrogen dithiophosphate is utilized as a component to improve the overall lubricating properties of oil. Its compatibility with other additives allows for the creation of formulations that offer superior performance, leading to increased equipment life and reduced energy consumption.

InChI:InChI=1/C16H35O2PS2/c1-5-9-11-15(7-3)13-17-19(20,21)18-14-16(8-4)12-10-6-2/h15-16H,5-14H2,1-4H3,(H,20,21)

Upstream product

• 104-76-7 2-Ethylhexyl alcohol 
• 629-11-8 1,6-hexanediol 
• 106-62-7 Dipropylene glycol 
• 1653-40-3 6-methylheptanol 
• 71426-89-6 bis(2-ethylhexyl)phosphorodithioic disulfide 

Downstream Products

• 104-76-7 2-Ethylhexyl alcohol 
• 17618-27-8 bis(2-ethylhexyl) phosphorothioic acid 
• 103213-09-8 O,O,O-tris(2-ethylhexyl) phosphorothioate 
• 105148-90-1 Thiophosphoric acid O,S,O'-tris-(2-ethyl-hexyl) ester 

Relevant academic research and scientific papers

Effect of unlimited self-association of a component of a chemical reaction on the equilibrium states of the copper dialkyldithiophosphate systems

In this paper, the redox and self-association processes of Cu(II) and Cu(I) dithiophosphates in the organic solutions were investigated by electronic absorption spectroscopy. It was shown that, over a wide concentration range of all components, the system under consideration is well described by the reduction of Cu(II) dithiophosphate with the formation of Cu(I) dithiophosphate and disulfide, followed by the unlimited self-association of the Cu(I) dithiophosphate. The results of this study also showed that the theory of ideal associated solutions can be efficiently applied for the description of this system. Considering that the self-association process is unlimited, we revealed the fundamentally new properties of highly associated compounds that simplify the description of such systems. The data obtained in this study can be useful for analyzing flotation and extraction processes with participation of Cu(II) and thiosubstituted organophosphorus acids, in particular, the commercial reagent CYANEX 301. The constants of the redox and self-association reactions were found to be as follows: Кredox = (7.5 ± 0.2) × 10?4, β = 348.3 ± 0.7.

Molybdenum-containing thiadiazole derivative of phosphorothioate, and preparation method and application thereof

The invention provides a molybdenum-containing thiadiazole derivative of phosphorothioate, belonging to the technical field of lubricating oil additives. The structural formula of the molybdenum-containing thiadiazole derivative of phosphorothioate is as shown in the specification. In the structural formula, R1 and R2 are straight-chain or branched-chain C4-C13 alkyl groups. The invention also provides a preparation method of the molybdenum-containing thiadiazole derivative of phosphorothioate. The molybdenum-containing thiadiazole derivative of phosphorothioate is used as a lubricating oil additive, has good lubricity, high extreme pressure performance and good thermal stability, and is an excellent antifriction additive for lubricating oil.

Long-chain alkyl esters of O,O-dialkyl dithiophosphoric and thionophosphoric acids prepared on the basis of red phosphorus, elemental sulfur, alcohols, and industrial fractions of higher monoolefins

Mixtures of long chain S-alkyl O,O-dialkyl dithiophosphates, and O-alkyl O,O-dialkyl thionophosphates were obtained by the reaction of red phosphorus with elemental sulfur, alcohols, and industrial fractions of C16-C18 and C20-C26 of higher olefins in the presence of Lewis acid catalysts. The products obtained possess high anticorrosion activities toward mild steel.

A composition of organic hetero compounds as an antioxidant and antiwear additive for mineral lubricating oils

As a multifunctional additive exhibiting antioxidant and antiwear activity for mineral lubricating oil, a composition of ammonium dialkyldithiophosphate (ADTP) with tetraalkyl thiuram disulfide (TDS) has been proposed, which provides lower sulfated ash, phosphorus, and sulfur contents compared with the traditional additive zinc dialkyldithiophosphate used for the same functions. Ammonium dialkyldithiophosphates bearing various alkyl radicals have been synthesized using structurally different amines. The antioxidant efficiency of ADTP samples has been shown by monitoring the formation and degradation of hydroperoxides in a hexadecane medium as a model of mineral oil. The tribological parameters of these compounds have been determined under boundary lubrication conditions.

DITHIOPHOSPHATE COMPOSITION AND UTILITY IN RUBBER

The present invention relates to oligomeric or polymer dithiophosphate di- or poly-sulfides and their utility in rubbers. Another aspect of the invention is a method for making oligomeric or polymeric dithiophosphates by reacting phosphorous pentasulfide with a di- or polyol and a mono alcohol to produce a dithiophosphoric acid, and then oxidizing the dithiophosphoric acid with an oxidizing agent to produce an oligomeric or polymeric dithiophosphate.

Process for reduced crude sediment in metal salts of hydrocarbyl dithiophosphoric acid

A process for the manufacture of a low sediment overbased metal dithiophosphate composition is disclosed. The process uses delayed addition of a C1 to C5 mono-carboxylic acid promoter during the neutralization of a primary dialkyl dithiophosphoric acid. The process results in reducing crude sediment whereby the resulting overbased metal dithiophosphate may need not undergo additional filtration steps prior to its intended use.

A 31P NMR Study of O,O'-Dialkyldithiophosphates: An Unusual Coupling

A series of O,O'-dialkyldithiophosphoric acids have been studied by 31P NMR, and a four-bond 31P-1H scalar coupling has been detected.This coupling is unusual because it is observed between phosphorus and only one of two available protons located on the same carbon, even when the alkyl fragment is simply an alkane that should not show conformational preference.Variation of the structural features of alkyl group showed that this coupling involved a "W" pathway. KEY WORDS - 31P NMR O,O'-dialkyldithiophosphoric acids four-bond 31P, 1H coupling

Process for reacting alcohols and/or phenols with phosphorus pentasulfide

The invention relates to a process wherein an alcohol and/or phenol is reacted with phosphorus pentasulfide in the presence of a catalyst which is selected from (a) phosphonium salts of the general formula: STR1 (b) ammonium salts of the general formula: STR2 (c) phosphine oxides of the general formula: STR3 (d) phosphine sulfides of the general formula: STR4 (e) phosphinic acid derivatives of the general formula: STR5 In formulae I through V, the substituents R1, R2, R3 and R4 each stand for identical or different alkyl-, aryl-, alkaryl- or aralkyl- groups having from 1 to 22 carbon atoms. A stands for an inorganic or organic acid, and X and Y, respectively, stand for both oxygen and sulfur, and M stands for a monovalent metal or oxygen.

REDOX REACTIONS OF ANTIMONY(III) O,O-DISUBSTITUTED PHOSPHORODITHIOATES WITH FERRIC CHLORIDE

The reaction of antimony(III) tris-(O,O-diethylphosphorodithioate) with three equivalents of ferric chloride in ether solution has been found to give ferrous chloride, bis-(O,O-diethylthiophosphoryl) disulfide and dichloroantimony O,O-diethyl phosphorodithioate as the major products.However, a relatively low yield of bis-(O,O-diethylthiophosphoryl) trisulfide was also obtained.The structures of these products were established by independent syntheses.Several additional antimony(III) tris-(O,O-disubstituted phosphorodithioates) were prepared, and the major organic product obtained by reaction of each of these compounds with three equiva lents of ferric chloride was the corresponding bis-(O,O-disubstituted thiophosphoryl) disulfide.A mechanism for this reaction has been suggested, and evidence in support of the mechanism has been presented.The various antimony(III) tris-(O,O-dialkyl phosphorodithioates) are passivating agents in petroleum refining.The results reported in this and in our previous papers indicate that such compounds undergo a variety of reactions with components of crude petroleum prior to the ultimate pyrolysis reactions which occur in the fluid catalytic cracking process.