Description

Phosphonothioic Acid, Polyisobutenyl Derivs., Esters With Pentaerythritol is a specialized organophosphorus compound engineered as a high-performance multifunctional additive. This product matters for its exceptional ability to impart extreme pressure, anti-wear, and antioxidant properties to lubricants and functional fluids. It is primarily needed by formulators in the lubricant, metalworking, and industrial additive sectors seeking to enhance the durability and operational lifespan of their products under severe conditions.

Application

• As a key extreme pressure (EP) and anti-wear additive in industrial gear oils, hydraulic fluids, and compressor oils.
• To provide oxidation stability and inhibit sludge formation in synthetic and semi-synthetic lubricant formulations.
• As a multifunctional component in metalworking fluids and cutting oils to protect tools and workpieces.
• In grease formulations to enhance load-carrying capacity and thermal stability.
• As a corrosion inhibitor and friction modifier in specialized lubricant packages.
• For use in automotive and marine engine oils where high-performance additive technology is required.

Basic Information

Product Name	Phosphonothioic Acid, Polyisobutenyl Derivs., Esters With Pentaerythritol
CAS No.	68908-58-7
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Pentaerythritol ester of polyisobutenyl phosphonothioic acid; Polyisobutenyl phosphonothioic acid pentaerythritol ester; Phosphorothioic acid, polyisobutenyl derivs., esters with pentaerythritol; Lubricant additive 68908-58-7; PIB phosphonothioate pentaerythritol ester; Multifunctional phosphorus-sulfur additive; PIB-PTE; Pentaerythritol polyisobutenylthiophosphate
EINECS	Contact for details

Quality Control

Our production of Phosphonothioic Acid, Polyisobutenyl Derivs., Esters With Pentaerythritol adheres to stringent quality management protocols to ensure batch-to-batch consistency and performance reliability. Each lot undergoes rigorous analytical testing, including assay, viscosity, and active component analysis, to meet precise customer specifications. Certificates of Analysis (COA) documenting all critical parameters are available upon request to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is easily oxidized; for long-term storage, maintaining an inert atmosphere (e.g., under nitrogen) is recommended to preserve efficacy. Keep away from strong oxidizing agents and heat sources.

Specification

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

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