Description

Methylheptyl Isostearate is a high-purity, branched-chain ester derived from isostearic acid. This specialty chemical is valued for its exceptional emolliency, low viscosity, and excellent oxidative stability, making it a superior alternative to traditional linear esters. It is primarily sought after by formulators in the personal care, cosmetics, and high-performance lubricant industries seeking to enhance product texture, spreadability, and shelf life.

Application

• Personal Care & Cosmetics: Acts as a premium emollient and skin-conditioning agent in creams, lotions, sunscreens, and color cosmetics for a non-greasy, silky feel.
• Hair Care Formulations: Used in conditioners, serums, and styling products to impart shine, reduce frizz, and improve combability without buildup.
• Pharmaceutical Topicals: Serves as a base or carrier in ointments, gels, and transdermal delivery systems due to its excellent skin compatibility and solvent properties.
• High-Performance Lubricants: Functions as a synthetic base stock or additive in specialty greases and metalworking fluids, offering good low-temperature fluidity and thermal stability.
• Plasticizer & Processing Aid: Employed in polymer processing to improve flexibility and workability of certain resins and elastomers.

Basic Information

Product Name	Methylheptyl Isostearate
CAS No.	209802-43-7
Molecular Formula	C26H52O2
Molecular Weight	396.7 g/mol
Synonyms	Isostearic Acid, Methylheptyl Ester; 7-Methylheptyl Isostearate; Methyl Heptyl Isostearate; Heptyl Methyl Isostearate; Isooctyl Isostearate (related); C18-C36 Acid, Methylheptyl Ester; Ester of Isostearic Acid and Methylheptanol
EINECS	Contact for details

Quality Control

Our Methylheptyl Isostearate is manufactured under a cGMP-compliant quality management system. Each batch undergoes rigorous analytical testing, including GC, HPLC, and FTIR, to ensure identity, purity, and consistency. Certificates of Analysis (COA) documenting full specifications are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents and heat sources.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to reference spectrum
Assay (GC)	≥ 98.0%
Acid Value	≤ 1.0 mg KOH/g
Saponification Value	140 - 150 mg KOH/g
Refractive Index (20°C)	1.450 - 1.455
Specific Gravity (20/20°C)	0.860 - 0.880

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