5810-88-8

Basic information

• Product Name: O,O-bis(2-ethylhexyl) hydrogen dithiophosphate
• Synonyms: O,O-bis(2-ethylhexyl) hydrogen dithiophosphate;PHOSPHORODITHIOICACID,O,O-BIS(2-ETHYLHEXYL)ESTER;O,O-Bis-(2-ethylhexyl)-phosphorodithioic acid;Dithiophosphoric acid bis(2-ethylhexyl);Dithiophosphoric acid bis(2-ethylhexyl) ester
• CAS NO: 5810-88-8
• Molecular Formula: C₁₆H₃₅O₂PS₂
• Molecular Weight: 355.559601
• EINECS: 227-376-0
• Mol File: 5810-88-8.mol
• Article Data: 10

Chemical Properties

• Boiling Point: 416.8°C at 760 mmHg
• Flash Point: 205.9°C
• Appearance: /
• Density: 1.006g/cm³
• Vapor Pressure: 8.99E-07mmHg at 25°C
• Refractive Index: 1.488
• PKA: -0.12±0.48(Predicted)
• CAS DataBase Reference: O,O-bis(2-ethylhexyl) hydrogen dithiophosphate(CAS DataBase Reference)
• NIST Chemistry Reference: O,O-bis(2-ethylhexyl) hydrogen dithiophosphate(5810-88-8)
• EPA Substance Registry System: O,O-bis(2-ethylhexyl) hydrogen dithiophosphate(5810-88-8)

Safety Data

• Hazardous Substances Data: 5810-88-8(Hazardous Substances Data)

Usage

General Description

O,O-bis(2-ethylhexyl) hydrogen dithiophosphate is a chemical compound commonly used as an additive in lubricants and motor oils. It acts as an anti-wear and antioxidant agent, providing protection against friction, wear, and corrosion in a wide variety of mechanical systems, including engines and industrial machinery. O,O-bis(2-ethylhexyl) hydrogen dithiophosphate is particularly effective in high-temperature and high-pressure conditions, making it a valuable component in the maintenance and performance of heavy-duty equipment. Additionally, O,O-bis(2-ethylhexyl) hydrogen dithiophosphate is known for its compatibility with other additives and its ability to enhance the overall lubricating properties of the oil, ultimately contributing to the longevity and efficiency of the equipment it is used in.

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

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

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 articles and documents

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.

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.

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.