Description

Castor Oil, Ester With Trimethylolpropane is a synthetic ester derived from the reaction of castor oil with trimethylolpropane. This chemical modification creates a versatile polyol ester with enhanced oxidative stability and lubricity compared to its base oil. It is a key intermediate and functional additive for industries requiring high-performance, bio-based lubricants and plasticizers. Primary users include formulators in the lubricants, polymers, coatings, and personal care sectors seeking sustainable and reliable raw materials.

Application

• As a base stock or additive in synthetic lubricants and greases, offering excellent thermal stability and low-temperature performance.
• As a bio-based plasticizer and compatibilizer for PVC, polyurethanes, and other polymer systems.
• As a key raw material for urethane alkyd resins used in high-quality surface coatings and inks.
• As a functional fluid in hydraulic and compressor applications where biodegradability is a benefit.
• As a emollient and viscosity modifier in cosmetic and personal care formulations.
• As a processing aid and internal lubricant in the manufacturing of plastics and elastomers.

Basic Information

Product Name	Castor Oil, Ester With Trimethylolpropane
CAS No.	68551-65-5
Molecular Formula	Typically a complex mixture of C54-C60 esters
Molecular Weight	~800-900 g/mol (Average)
Synonyms	Trimethylolpropane Esters of Castor Oil Fatty Acids; TMP Ester of Castor Oil; Castor Oil TMP Ester; Polyol Ester of Castor Oil; Trimethylolpropane Triester of Castor Oil Fatty Acids; TMP-Castorate; Bio-based TMP Ester; Lubricant Ester 68551-65-5
EINECS	Contact for details

Quality Control

Our Castor Oil, Ester With Trimethylolpropane is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure consistency and performance. Key parameters such as acid value, hydroxyl value, viscosity, and color are rigorously controlled. Certificates of Analysis (COA) documenting these specifications are available upon request to support your quality assurance protocols.

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 product is easily oxidized; for long-term storage, maintaining an inert atmosphere (e.g., under nitrogen) is recommended to preserve quality. Keep away from strong oxidizing agents, acids, and alkalis.

Specification

Item	Specification
Appearance	Clear, viscous liquid
Color (Gardner)	≤ 3
Acid Value (mg KOH/g)	≤ 2.0
Hydroxyl Value (mg KOH/g)	Contact for details
Viscosity @ 40°C (cSt)	Contact for details
Moisture (Karl Fischer)	≤ 0.1%
Identification (IR)	Conforms

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