Description

Butyl Epoxystearate (Van) is a specialized ester derivative of epoxidized stearic acid, valued for its role as a plasticizer and stabilizer. This compound is engineered to enhance the flexibility and durability of polymer matrices while providing resistance to degradation. It is a critical component for manufacturers in the plastics, coatings, and rubber industries seeking to improve product performance and longevity.

Application

• Primary plasticizer and secondary stabilizer for PVC and other vinyl polymers.
• Improves low-temperature flexibility and processability in elastomers and synthetic rubbers.
• Used as a lubricant and processing aid in the manufacture of plastic films and sheets.
• Key additive in adhesive and sealant formulations to enhance elasticity and adhesion.
• Imparts heat and light stability in various coating systems, including paints and inks.
• Functions as a migration-resistant plasticizer for food-contact grade polymers (subject to compliance).

Basic Information

Product Name	Butyl Epoxystearate (Van)
CAS No.	69430-58-6
Molecular Formula	C22H42O3
Molecular Weight	354.57 g/mol
Synonyms	Butyl 9,10-Epoxyoctadecanoate; Butyl Oxiraneoctadecanoate; Epoxidized Butyl Stearate; Vanplasticizer BES; 9,10-Epoxy Stearic Acid Butyl Ester; Butyl Ester of Epoxidized Stearic Acid; Octadecanoic acid, 9,10-epoxy-, butyl ester
EINECS	Contact for details

Quality Control

Our Butyl Epoxystearate (Van) is produced under a stringent quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets precise specifications for purity, epoxide content, and physical properties. Certificates of Analysis (COA) documenting identity, assay, and impurity profiles are available upon request to 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). This material is easily oxidized; for long-term storage, maintaining an inert atmosphere (e.g., under nitrogen) is recommended to preserve product integrity. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Clear, pale yellow viscous liquid
Identification (IR)	Conforms
Assay (Epoxide Content)	≥ 4.5 % (as oxirane oxygen)
Acid Value	≤ 1.0 mg KOH/g
Iodine Value	≤ 3.0 g I2/100g
Moisture (KF)	≤ 0.1 %
Refractive Index (20°C)	1.452 - 1.458
Specific Gravity (20°C)	0.91 - 0.93

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