Description

Phosphonic Acid, Mixed With Phosphonothioic Acid, Polyisobutenyl Derivs., Bis(2-Hydroxyethyl) Esters CAS NO 74313-66-9 is a high-performance, multifunctional organophosphorus compound engineered for advanced industrial applications. This specialized chemical offers exceptional value as a versatile additive and intermediate, combining the chelating and stabilizing properties of phosphonic acid derivatives with the unique characteristics imparted by the polyisobutylene and thio-phosphorus moieties. It is primarily sought by formulators and manufacturers in the lubricant, fuel additive, and metalworking fluid industries, where it serves as a critical component for enhancing product performance, stability, and longevity.

Application

• Lubricant and Grease Additive: Functions as an extreme pressure (EP) agent, anti-wear additive, and corrosion inhibitor in industrial and automotive lubricants and greases.
• Fuel and Oil Additive: Used in gasoline and diesel fuel formulations to act as a detergent, dispersant, and stabilizer, preventing deposit formation and improving engine cleanliness.
• Metalworking Fluids: A key ingredient in cutting oils, grinding fluids, and hydraulic fluids, providing excellent lubricity, rust protection, and emulsion stability.
• Polymer Stabilizer and Plasticizer: Serves as a stabilizer in polymers like PVC and as a plasticizer intermediate, enhancing thermal stability and processing characteristics.
• Scale and Corrosion Inhibitor: Effective in industrial water treatment systems, including cooling water and boiler water, to control scale formation and inhibit metal corrosion.
• Chemical Intermediate: Utilized in the synthesis of more complex organophosphorus compounds for specialized applications in agrochemicals and material science.

Basic Information

Item	Detail
Product Name	Phosphonic Acid, Mixed With Phosphonothioic Acid, Polyisobutenyl Derivs., Bis(2-Hydroxyethyl) Esters
CAS No.	74313-66-9
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Bis(2-hydroxyethyl) ester of phosphonic acid, mixed with phosphonothioic acid, polyisobutenyl derivatives; Polyisobutylene-substituted bis(2-hydroxyethyl) phosphonate/phosphonothioate; PIBSA-based phosphonate ester; Organophosphorus polyisobutylene derivative; Lubricant additive 74313-66-9; Phosphonated polyisobutylene succinimide derivative (related class); Thiophosphonic acid polyisobutylene ester
EINECS	Contact for details

Quality Control

Our production of Phosphonic Acid, Mixed With Phosphonothioic Acid, Polyisobutenyl Derivs., Bis(2-Hydroxyethyl) Esters adheres to a stringent quality management system. Every batch undergoes rigorous analytical testing to ensure consistent composition, purity, and performance as per agreed specifications. Key parameters such as active content, viscosity, acid number, and sulfur/phosphorus content are monitored. A comprehensive Certificate of Analysis (COA) documenting all test results is provided with each shipment to guarantee traceability and compliance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong alkalis and incompatible organic solvents. The container must be kept tightly sealed when not in use to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	Amber to brown viscous liquid
Identification (IR)	Conforms
Active Content	≥ 90%
Phosphorus Content	Contact for details
Sulfur Content	Contact for details
Acid Value	≤ 10 mg KOH/g
Viscosity @ 40°C	Contact for details
Density @ 20°C	Contact for details
Water Content	≤ 0.5%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.