Description

Di-sec-Butyl Peroxydicarbonate is a highly reactive organic peroxide primarily used as a free-radical polymerization initiator. Its rapid decomposition at relatively low temperatures makes it a critical component for achieving high polymerization rates and controlling polymer molecular weight. This compound is essential for manufacturers in the polymer industry, particularly for the production of PVC, polyvinyl acetate, and various acrylic resins, where it ensures efficient and consistent reaction kinetics.

Application

• Polymerization Initiator for PVC: Widely used in the suspension and bulk polymerization of vinyl chloride to produce polyvinyl chloride (PVC) resins.
• Production of Acrylic Polymers: Serves as a key initiator in the polymerization of methyl methacrylate (MMA) and other acrylic monomers.
• Manufacture of Polyvinyl Acetate (PVAc): Employed in the polymerization of vinyl acetate for adhesives and coatings.
• Curing Agent for Unsaturated Polyester Resins: Used to initiate the cross-linking reaction in fiberglass-reinforced plastics (FRP) and composite materials.
• Synthesis of Specialty Copolymers: Facilitates the production of ethylene-vinyl acetate (EVA) copolymers and other specialty materials.
• Low-Temperature Polymerization Processes: Ideal for reactions requiring initiation at moderate temperatures to control exotherms and polymer structure.

Basic Information

Product Name	Di-sec-Butyl Peroxydicarbonate
CAS No.	19910-65-7
Molecular Formula	C10H18O6
Molecular Weight	234.25 g/mol
Synonyms	Di-sec-butyl peroxydicarbonate; Peroxydicarbonic acid, di-sec-butyl ester; sec-Butyl peroxydicarbonate; SBP; Di(sec-butyl) peroxydicarbonate; Bis(1-methylpropyl) peroxydicarbonate; DSP; Lucidol SBP; USP-508
EINECS	243-416-7

Quality Control

Our Di-sec-Butyl Peroxydicarbonate is manufactured under stringent process controls to ensure batch-to-batch consistency and high purity. The product undergoes rigorous quality testing, including assay by iodometric titration and analysis of key impurities, to ensure compliance with industry standards. Certificates of Analysis (COA) detailing purity, active oxygen content, and safety parameters are available for every batch upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, well-ventilated area away from heat, sparks, and open flame. Due to its nature as an organic peroxide and being easily oxidized (store under inert atmosphere), it must be kept separate from reducing agents, acids, bases, and other incompatible materials. Recommended storage temperature is below 25°C (77°F).

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Assay (by Iodometric Titration)	≥ 98.0 %
Active Oxygen Content	≥ 6.8 %
Identification (IR)	Conforms
Density (at 20°C)	1.040 - 1.060 g/cm³
Refractive Index (nD20)	1.410 - 1.420

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