Description

Diisostearyl Fumarate is a high-purity, synthetic ester derived from fumaric acid and isostearyl alcohol. This compound serves as a versatile and effective emollient, solvent, and skin-conditioning agent, prized for its excellent spreadability, non-greasy feel, and compatibility with a wide range of cosmetic ingredients. It is a critical raw material for formulators in the personal care and cosmetics industry seeking to enhance product texture, stability, and sensory profile.

Application

• Cosmetic & Personal Care Emollient: Primary function as a high-performance skin-conditioning agent in creams, lotions, sunscreens, and makeup products, providing a smooth, silky after-feel.
• Pigment Wetting & Dispersion Agent: Used in color cosmetics (lipsticks, foundations, eyeshadows) to improve pigment dispersion, enhance color payoff, and ensure formulation stability.
• Hair Care Conditioning Agent: Incorporated into hair conditioners, serums, and styling products to impart shine, reduce frizz, and improve combability without heaviness.
• Plasticizer for Polymers: Acts as a secondary plasticizer or processing aid in specialty polymer applications to improve flexibility and workability.
• Lubricant & Release Agent: Functions as a non-reactive lubricant or mold release agent in various industrial processes.
• Solvent for Active Ingredients: Serves as a solvent for oil-soluble active ingredients and UV filters in sunscreen and skincare formulations.

Basic Information

Product Name	Diisostearyl Fumarate
CAS No.	113431-53-1
Molecular Formula	C40H76O4
Molecular Weight	620.99 g/mol
Synonyms	Diisooctadecyl Fumarate; Diisostearyl Fumarate; Fumaric Acid Diisostearyl Ester; Bis(isostearyl) Fumarate; ISF; DISF; 2-Butenedioic Acid (E)-, 1,4-Diisooctadecyl Ester; (E)-Diisooctadecyl But-2-enedioate
EINECS	Contact for details

Quality Control

Our Diisostearyl Fumarate is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for identity, purity, and performance. A comprehensive Certificate of Analysis (COA) documenting key parameters such as assay, acid value, color, and odor is provided with every shipment to guarantee consistency and support your quality assurance protocols.

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 alkalis and incompatible materials. Under these conditions, the product has excellent shelf stability.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to standard
Assay (GC)	≥ 98.0%
Acid Value	≤ 1.0 mg KOH/g
Saponification Value	175 - 190 mg KOH/g
Color (APHA)	≤ 50
Odor	Characteristic, faint
Specific Gravity (25°C)	0.870 - 0.890
Refractive Index (25°C)	1.455 - 1.465

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