Description

3,5-Bis[(tert-Butyl)Dioxy]-3,5-Dimethyl-1,2-Dioxolane is a high-purity organic peroxide initiator, specifically a cyclic diperoxyketal, valued for its controlled decomposition profile. This compound is essential for initiating free-radical polymerization reactions at moderate temperatures, offering superior process control and safety compared to traditional initiators. It is a critical raw material for manufacturers in the polymer, resin, and specialty chemical industries seeking consistent and reliable reaction kinetics.

Application

• Polymerization Initiator: Primary use as a free-radical initiator for the production of polystyrene, polyvinyl chloride (PVC), and other vinyl polymers.
• Crosslinking Agent: Used in the curing and crosslinking of unsaturated polyester resins for fiberglass-reinforced plastics (FRP) and coatings.
• Synthesis of Specialty Polymers: Facilitates the production of acrylic resins, styrene-acrylonitrile (SAN) copolymers, and other engineering plastics.
• Organic Synthesis: Serves as a source of tert-butoxy radicals in various organic transformations and fine chemical synthesis.
• Adhesive & Sealant Formulation: A key component in formulations requiring controlled, heat-activated curing mechanisms.
• Composite Material Manufacturing: Enables the curing of thermoset matrices in advanced composite materials.

Basic Information

Product Name	3,5-Bis[(tert-Butyl)Dioxy]-3,5-Dimethyl-1,2-Dioxolane
CAS No.	35147-45-6
Molecular Formula	C14H28O6
Molecular Weight	292.37 g/mol
Synonyms	3,5-Dimethyl-3,5-bis(tert-butyldioxy)-1,2-dioxolane; 3,5-Dimethyl-3,5-di-(tert-butylperoxy)-1,2-dioxolane; 1,2-Dioxolane, 3,5-bis[(1,1-dimethylethyl)dioxy]-3,5-dimethyl-; Cyclic diperoxyketal; Peroxide initiator L-531; TBEC (common abbreviation); 3,5-Dimethyl-3,5-di-(tert-butylperoxy)dioxolane
EINECS	Contact for details

Quality Control

Our 3,5-Bis[(tert-Butyl)Dioxy]-3,5-Dimethyl-1,2-Dioxolane is manufactured under strict quality management systems to ensure batch-to-batch consistency and reliability. The product undergoes rigorous analytical testing, including assay by HPLC and active oxygen content determination, to meet stringent industry specifications. A Certificate of Analysis (COA) detailing purity, peroxide content, and key impurities is provided with every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from heat, sparks, and open flames. Maintain storage temperature between 15°C and 25°C (59°F and 77°F). Keep away from reducing agents, strong acids, bases, and other incompatible materials. Due to its nature as an organic peroxide, store separately in approved safety cabinets or dedicated areas.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 95.0 %
Active Oxygen Content	≥ 10.0 %
Water Content (KF)	≤ 0.5 %
Refractive Index (20°C)	1.420 - 1.430
Density (20°C)	1.00 - 1.05 g/cm³

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