Description

Diisostearyl Fumarate is a high-purity, synthetic ester derived from fumaric acid and isostearyl alcohol. This specialty chemical serves as a versatile, non-greasy emollient and skin-conditioning agent, prized for its excellent spreadability and stability in demanding formulations. It is a critical ingredient for manufacturers in the personal care, cosmetics, and pharmaceutical industries seeking to enhance product texture and performance.

Application

• Cosmetic & Personal Care Formulations: Acts as a premium emollient and skin-conditioning agent in creams, lotions, sunscreens, and decorative cosmetics (e.g., lipsticks, foundations) for a smooth, non-tacky feel.
• Hair Care Products: Used in conditioners, hair serums, and styling products to impart shine, reduce frizz, and improve combability without heaviness.
• Pharmaceutical Topicals: Serves as a base or carrier in ointments, gels, and transdermal delivery systems due to its excellent skin compatibility and solvent properties.
• Color Cosmetics: Functions as a pigment dispersant and binder in makeup products, ensuring even color payoff and long-wearing properties.
• Skin Care Serums & Treatments: Provides enhanced spreadability and penetration for active ingredients in anti-aging and treatment serums.
• Industrial Lubricants & Release Agents: Employed in specialized applications where a non-reactive, stable lubricant with low volatility is required.

Basic Information

Product Name	Diisostearyl Fumarate
CAS No.	112385-09-8
Molecular Formula	C40H76O4
Molecular Weight	621.0 g/mol
Synonyms	Bis(isostearyl) Fumarate; Diisooctadecyl Fumarate; Fumaric Acid Diisostearyl Ester; Isooctadecyl Fumarate; ISF; DISF; 2-Butenedioic Acid (E)-, 1,4-Bis(16-Methylheptadecyl) Ester; Kemester 5950 (Trade Name); Prisorine 3515 (Trade Name)
EINECS	Contact for details

Quality Control

Our Diisostearyl Fumarate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets high-purity standards suitable for cosmetic and pharmaceutical applications. Certificates of Analysis (COA) documenting identity, assay, and impurity profiles are provided with every shipment to guarantee supply consistency and traceability.

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 reference spectrum
Assay (GC)	≥ 98.0 %
Acid Value	≤ 1.0 mg KOH/g
Saponification Value	175 - 190 mg KOH/g
Iodine Value	≤ 2.0 g I2/100g
Water Content (KF)	≤ 0.1 %
Heavy Metals (as Pb)	≤ 10 ppm

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