Description

Butyl Epoxystearate CAS NO 106-83-2 is a specialized organic ester compound derived from epoxidized stearic acid. This chemical serves as a highly effective plasticizer and stabilizer, prized for its ability to enhance the flexibility and durability of polymer matrices while improving their resistance to heat and light. It is an essential additive for manufacturers in the plastics, coatings, and rubber industries seeking to optimize product performance and longevity.

Application

• Primary plasticizer and secondary stabilizer for PVC (polyvinyl chloride) and other vinyl polymers.
• Key additive in the formulation of flexible and semi-rigid PVC products, such as cables, hoses, and films.
• Stabilizing agent in polymer coatings and adhesives to prevent degradation from heat and UV exposure.
• Modifier for synthetic rubbers and elastomers to improve low-temperature flexibility.
• Component in lubricant and grease formulations for its thickening and stabilizing properties.
• Used in the production of specialty inks and colorants requiring enhanced dispersion and stability.

Basic Information

Product Name	Butyl Epoxystearate
CAS No.	106-83-2
Molecular Formula	C22H42O3
Molecular Weight	354.57 g/mol
Synonyms	Butyl 9,10-Epoxyoctadecanoate; Butyl Oxiraneoctadecanoate; Epoxidized Butyl Stearate; 9,10-Epoxy Stearic Acid Butyl Ester; Butyl Ester of Epoxidized Stearic Acid; Plasticizer BES; Stabilizer BES; Octadecanoic acid, 9,10-epoxy-, butyl ester
EINECS	203-435-9

Quality Control

Our Butyl Epoxystearate is manufactured under a stringent quality management system to ensure batch-to-batch consistency and reliability. The product undergoes comprehensive analytical testing, including assay, epoxide content, and impurity profiling, to meet exacting industry specifications. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents, acids, and bases. Under these conditions, the product has a typical shelf life of 24 months from the date of manufacture.

Specification

Item	Specification
Appearance	Clear, pale yellow to yellow viscous liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.0 %
Epoxide Content	3.0 - 4.0 %
Acid Value	≤ 1.0 mg KOH/g
Iodine Value	≤ 5.0 g I2/100g
Moisture (KF)	≤ 0.2 %
Specific Gravity (20°C)	0.910 - 0.930
Refractive Index (20°C)	1.450 - 1.460

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