Description

Isostearic Acid CAS NO 22890-21-7 is a branched-chain, liquid fatty acid derived from oleic acid, offering superior stability and solubility compared to its straight-chain counterparts. This unique structure makes it a highly versatile intermediate and additive, prized for its excellent oxidative stability and low-temperature fluidity. It is a critical raw material for manufacturers in the personal care, lubricants, plastics, and coatings industries seeking to enhance product performance and shelf life.

Application

• Personal Care & Cosmetics: A key emollient and opacifying agent in creams, lotions, lipsticks, and sunscreens, providing a smooth, non-greasy feel and improving texture stability.
• Lubricants & Greases: Used to synthesize esters that serve as high-performance base stocks and additives, offering excellent low-temperature properties and thermal/oxidative stability.
• Polymer & Plastic Additives: Acts as an internal and external lubricant, mold release agent, and plasticizer for PVC, polystyrene, and other polymers, improving processing and surface finish.
• Coatings & Inks: Employed in alkyd resins and other coating formulations to enhance flexibility, gloss, water resistance, and drying properties.
• Metalworking Fluids: Functions as a corrosion inhibitor and lubricity agent in synthetic and semi-synthetic metalworking fluids.
• Textile & Leather Auxiliaries: Used in softeners, finishing agents, and lubricants to impart softness and improve processing.

Basic Information

Product Name	Isostearic Acid
CAS No.	22890-21-7
Molecular Formula	C₁₈H₃₆O₂
Molecular Weight	284.48 g/mol
Synonyms	16-Methylheptadecanoic Acid; Isooctadecanoic Acid; Branched Stearic Acid; 16-Methyl margaric acid; Iso-C18 Acid; (16-Methylheptadecyl)carboxylic Acid
EINECS	245-301-6

Quality Control

Our Isostearic Acid is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets precise specifications for purity, acid value, color, and other critical parameters. We provide full traceability and Certificates of Analysis (COA) are available for all shipments to guarantee consistency and compliance with your requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from heat sources and incompatible materials. Due to its nature of being easily oxidized, it is recommended to store under an inert atmosphere (e.g., nitrogen) for long-term preservation. Recommended storage temperature: 15-25°C.

Specification

Item	Specification
Appearance	Clear, pale yellow liquid
Identification (IR)	Conforms
Acid Value	180 - 200 mg KOH/g
Saponification Value	185 - 205 mg KOH/g
Iodine Value	5 - 15 g I₂/100g
Color (Gardner)	≤ 3
Water Content	≤ 0.1%
Unsaponifiable Matter	≤ 1.5%

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