Description

Octadecyl Isooctanoate is a high-purity, long-chain fatty acid ester derived from stearyl alcohol and isooctanoic acid. This compound serves as a versatile and effective emollient, lubricant, and carrier oil, prized for its excellent skin feel, stability, and compatibility with a wide range of ingredients. It is a critical raw material for formulators in the personal care, cosmetics, and specialty lubricants industries seeking non-greasy, non-irritating performance additives.

Application

• Personal Care & Cosmetics: A premium emollient and skin-conditioning agent in creams, lotions, sunscreens, and makeup products for its smooth, dry, and non-greasy after-feel.
• Hair Care Formulations: Used in conditioners, hair serums, and styling products to impart shine, reduce frizz, and improve combability without heavy buildup.
• Pharmaceutical Topicals: Acts as a carrier and penetration enhancer in ointments, gels, and transdermal drug delivery systems.
• Specialty Lubricants: Functions as a synthetic base oil or additive in high-performance lubricants, mold release agents, and textile fiber lubricants.
• Industrial Additives: Employed as a plasticizer, processing aid, or anti-static agent in polymers and plastic formulations.
• Pigment & Filler Dispersions: Serves as a wetting and grinding aid for inorganic pigments and fillers in coating and ink systems.

Basic Information

Product Name	Octadecyl Isooctanoate
CAS No.	84878-28-4
Molecular Formula	C₂₆H₅₂O₂
Molecular Weight	396.7 g/mol
Synonyms	Stearyl Isooctanoate; Isooctadecyl Isooctanoate; Octadecyl 2-Ethylhexanoate; Stearyl 2-Ethylhexanoate; 2-Ethylhexanoic Acid, Octadecyl Ester; Isooctanoic Acid, Octadecyl Ester; Cetyl-Stearyl Isooctanoate (Blend); Prisorine® 3505; Starfol™ IS
EINECS	284-420-0

Quality Control

Our Octadecyl Isooctanoate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for identity, purity, and performance. A comprehensive Certificate of Analysis (COA) documenting purity, acid value, saponification value, and other critical parameters is provided with every shipment to guarantee consistency and compliance for your applications.

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.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.0%
Acid Value	≤ 1.0 mg KOH/g
Saponification Value	140 - 150 mg KOH/g
Iodine Value	≤ 1.0 g I₂/100g
Water Content (KF)	≤ 0.1%

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