Description

Isostearic Acid CAS NO 54680-48-7 is a branched-chain, liquid fatty acid derived from oleic acid, offering superior stability and solubility compared to its linear counterparts. This unique structure provides excellent oxidative stability and low-temperature fluidity, making it a valuable modifier in demanding formulations. It is a critical raw material for manufacturers in the personal care, lubricant, and polymer industries seeking to enhance product performance and shelf life.

Application

• Personal Care & Cosmetics: Acts as an efficient emollient, opacifier, and viscosity modifier in creams, lotions, lipsticks, and deodorants, providing a non-greasy feel and improved texture.
• Lubricants & Greases: Used as a component in synthetic lubricants, metalworking fluids, and lithium complex greases, contributing to low pour points, thermal stability, and enhanced lubricity.
• Polymer & Resin Industry: Serves as a plasticizer and modifier for synthetic resins, improving flexibility, impact resistance, and processing characteristics.
• Chemical Intermediate: A key starting material for the synthesis of isostearyl alcohol, esters, and amides, which are used in a wide range of specialty surfactants and conditioners.
• Textile & Leather Processing: Functions as a softening agent and lubricant in fiber processing and leather finishing applications.
• Adhesives & Sealants: Imparts improved adhesion, flexibility, and water resistance in various adhesive and sealant formulations.

Basic Information

Item	Details
Product Name	Isostearic Acid
CAS No.	54680-48-7
Molecular Formula	C₁₈H₃₆O₂
Molecular Weight	284.48 g/mol
Synonyms	16-Methylheptadecanoic Acid; Isooctadecanoic Acid; Branched-chain C18 Acid; Isomeric Stearic Acid; (16-Methyl)heptadecanoic acid; Iso-C18 Acid
EINECS	259-280-2

Quality Control

Our Isostearic Acid is produced under a stringent quality management system. Each batch is tested to ensure it meets precise specifications for purity, acid value, iodine value, and color. Certificates of Analysis (COA) documenting these results are available for every shipment to guarantee traceability and compliance with your formulation requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). As the material is easily oxidized, it is recommended to store under an inert atmosphere (e.g., nitrogen) for long-term storage to maintain optimal quality. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Clear, pale yellow liquid
Acid Value (mg KOH/g)	180 - 200
Saponification Value (mg KOH/g)	185 - 205
Iodine Value (g I₂/100g)	5 - 15
Color (Gardner)	≤ 3
Water Content (%)	≤ 0.1
Identification (IR)	Conforms

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