Description

Trimethylolpropane Isostearate is a synthetic ester derived from trimethylolpropane and isostearic acid, valued for its excellent lubricity, oxidative stability, and hydrophobic character. This multifunctional chemical intermediate is crucial for formulating high-performance products that require superior emolliency and resistance to hydrolysis. It is primarily sought after by manufacturers in the personal care, lubricant, and polymer industries for its ability to enhance product texture, stability, and performance under demanding conditions.

Application

• Personal Care & Cosmetics: Acts as a premium emollient and skin-conditioning agent in creams, lotions, sunscreens, and makeup, providing a non-greasy, silky feel.
• Lubricants & Greases: Serves as a synthetic base oil or additive in high-temperature and biodegradable lubricants, metalworking fluids, and greases, offering low volatility and excellent thermal stability.
• Polymer & Plastic Additives: Used as a plasticizer and lubricant in PVC, polyolefins, and engineering plastics to improve flexibility, mold release, and processing.
• Coatings & Inks: Functions as a leveling agent and viscosity modifier in solvent-based and radiation-curable coatings, inks, and adhesives, enhancing flow and finish.
• Textile & Fiber Treatment: Employed as a softening and lubricating agent for synthetic fibers and yarns to reduce friction during processing.

Basic Information

Product Name	Trimethylolpropane Isostearate
CAS No.	86090-74-6
Molecular Formula	C60H116O6
Molecular Weight	~933.6 g/mol
Synonyms	Trimethylolpropane Triisostearate; TMP Triisostearate; 2-Ethyl-2-[[(1-oxoisooctadecyl)oxy]methyl]-1,3-propanediyl Diisooctadecanoate; Propanoic Acid, 2,2-Bis[[(1-oxoisooctadecyl)oxy]methyl]-, 1,1'-(2-Ethyl-2-[[(1-oxoisooctadecyl)oxy]methyl]-1,3-propanediyl) Ester; TMP Tris(Iso-Stearate); Isostearic Acid, Trimethylolpropane Ester; Trimethylolpropane Ester of Isostearic Acid
EINECS	Contact for details

Quality Control

Our Trimethylolpropane Isostearate is produced under a strict quality management system to ensure batch-to-batch consistency and high purity. Each lot is tested against stringent in-house specifications, which typically include parameters for identity, assay, acid value, hydroxyl value, and color. Certificates of Analysis (COA) documenting these results 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). Keep away from strong alkalis and incompatible materials such as strong oxidizing agents. Under these conditions, the product has excellent shelf stability.

Specification

Item	Specification
Appearance	Clear, pale yellow to yellow viscous liquid
Identification (IR)	Conforms
Assay (GC)	≥ 95.0%
Acid Value	≤ 2.0 mg KOH/g
Hydroxyl Value	≤ 10.0 mg KOH/g
Color (Gardner)	≤ 4
Water Content	≤ 0.2%

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