Description

Fatty Acids, C16-18, iso-Bu Esters (CAS NO 85865-69-6) are a class of branched-chain ester derivatives of palmitic and stearic acids, offering enhanced solubility and lower melting points compared to their linear counterparts. This product serves as a versatile, non-polar intermediate and functional fluid, prized for its excellent solvency, lubricity, and hydrophobic properties. It is essential for formulators and manufacturers in the lubricants, coatings, and personal care industries seeking performance additives with improved compatibility and stability.

Application

• Lubricant & Metalworking Fluids: Acts as a friction modifier, anti-wear additive, and base oil component for synthetic lubricants and drawing compounds.
• Polymer & Plastic Additives: Used as an internal or external lubricant and plasticizer in PVC and other polymer processing to improve flow and surface finish.
• Coatings & Inks: Functions as a wetting and dispersing agent for pigments, and as a coalescing aid or solvent in specialty coatings and printing inks.
• Personal Care & Cosmetics: Employed as an emollient, solvent, and carrier for active ingredients in skincare and cosmetic formulations.
• Industrial Cleaning & Degreasing: Serves as a key component in solvent blends for heavy-duty degreasers and industrial cleaners.
• Chemical Synthesis: Utilized as a hydrophobic building block or intermediate in the synthesis of surfactants, emulsifiers, and other specialty chemicals.

Basic Information

Product Name	Fatty Acids, C16-18, iso-Bu Esters
CAS No.	85865-69-6
Molecular Formula	Typically C20H40O2 to C22H44O2 (mixture)
Molecular Weight	~312.5 - 340.6 g/mol (mixture)
Synonyms	Isobutyl Palmitate/Stearate; Isobutyl C16-18 Fatty Acid Esters; Isobutyl Hexadecanoate/Octadecanoate; Fatty Acids, C16-18, Isobutyl Esters; 2-Methylpropyl Hexadecanoate/Octadecanoate; Isobutyl Ester of Hydrogenated Tallow Fatty Acid; Isobutyl Esters of C16-18 Acids
EINECS	Contact for details

Quality Control

Our Fatty Acids, C16-18, iso-Bu Esters are manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistent composition, purity, and performance. Certificates of Analysis (COA) documenting key parameters such as ester content, acid value, and saponification value 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 away from strong acids and oxidizing agents. Recommended storage temperature is between 15°C and 25°C. Keep container tightly sealed when not in use to prevent moisture absorption and maintain product integrity.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 95.0% (Total Ester Content)
Acid Value	≤ 1.0 mg KOH/g
Saponification Value	175 - 190 mg KOH/g
Iodine Value	≤ 5.0 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.