Description

Pentaerythritol Tetraisostearate is a high-performance, fully saturated synthetic ester derived from pentaerythritol and isostearic acid. This versatile compound serves as a premium lubricant, emollient, and viscosity modifier with excellent oxidative stability and low-temperature properties. It is essential for formulators in the cosmetics, personal care, and specialty lubricants industries seeking superior skin feel, moisture resistance, and thermal performance.

Application

• Cosmetic & Personal Care: Acts as a non-greasy, highly stable emollient and skin-conditioning agent in creams, lotions, sunscreens, and decorative cosmetics.
• Lubricants & Greases: Functions as a high-performance synthetic base oil or additive in specialty lubricants, metalworking fluids, and compressor oils, offering excellent lubricity and thermal stability.
• Plastic Additives: Used as an internal and external lubricant and plasticizer in PVC and other polymer processing to improve flow and surface finish.
• Textile & Fiber: Serves as a softening agent and lubricant for synthetic fibers and yarns during processing and finishing.
• Adhesives & Sealants: Imparts flexibility and moisture resistance as a plasticizer and rheology modifier in various adhesive formulations.
• Industrial Coatings: Enhances flow, leveling, and substrate wetting properties in coating systems.

Basic Information

Product Name	Pentaerythritol Tetraisostearate
CAS No.	62125-22-8
Molecular Formula	C77H148O8
Molecular Weight	~1201.9 g/mol
Synonyms	Pentaerythrityl Tetraisostearate; Pentaerythritol Tetraisooctadecanoate; Tetraisostearic Acid Pentaerythritol Ester; Pentaerythritol Ester of Isooctadecanoic Acid; PEIS; Pentaerythritol Tetra(isostearate); 2,2-Bis[[(1-oxoisooctadecyl)oxy]methyl]-1,3-propanediyl diisooctadecanoate
EINECS	263-382-1

Quality Control

Our Pentaerythritol Tetraisostearate is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure consistency, purity, and performance. We provide full traceability and Certificates of Analysis (COA) are available for all shipments. Our quality protocols are designed to meet the requirements of ISO standards and relevant industry specifications for cosmetics and lubricants.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C/59-77°F). Keep away from strong oxidizing agents and heat sources. Under these conditions, the product has excellent shelf stability.

Specification

Item	Specification
Appearance	Clear, pale yellow to yellow viscous liquid
Acid Value (mg KOH/g)	≤ 2.0
Hydroxyl Value (mg KOH/g)	≤ 10.0
Saponification Value (mg KOH/g)	180 - 200
Iodine Value (g I2/100g)	≤ 5.0
Moisture (Karl Fischer)	≤ 0.1%
Viscosity @ 40°C (cSt)	Contact for details
Pour Point (°C)	Contact for details

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