Description

tert-Butyl Peroxyisobutyrate CAS NO 109-13-7 is a high-purity organic peroxide widely utilized as a polymerization initiator and crosslinking agent. Its primary value lies in its ability to efficiently generate free radicals at moderate temperatures, enabling precise control over polymer chain formation and material properties. This compound is essential for manufacturers in the polymer, resin, and specialty chemical industries seeking to produce materials with specific molecular weights and enhanced performance characteristics.

Application

• Polymerization Initiator: A key component for initiating the free-radical polymerization of monomers such as ethylene, styrene, vinyl chloride, and acrylates.
• Crosslinking Agent: Used to create three-dimensional polymer networks, improving the thermal stability, chemical resistance, and mechanical strength of polyethylene, unsaturated polyesters, and silicone rubbers.
• Curing Agent for Resins: Facilitates the curing process for thermosetting resins, including certain acrylic and polyester resins used in coatings and composites.
• Synthesis Intermediate: Serves as an intermediate in organic synthesis for introducing the tert-butylperoxy group into target molecules.
• Modifier for Polymer Properties: Employed to control molecular weight and branching during polymer production, tailoring final product characteristics like melt flow and impact strength.

Basic Information

Product Name	tert-Butyl Peroxyisobutyrate
CAS No.	109-13-7
Molecular Formula	C8H16O3
Molecular Weight	160.21 g/mol
Synonyms	tert-Butyl Perisobutyrate; TBIB; Peroxide, tert-Butyl Isobutyrate; 2,2-Dimethylpropyl 2-methylpropaneperoxoate; tert-Butyl Peroxy-2-methylpropanoate; Luperox 75; Trigonox 187-C75; USP-308
EINECS	203-650-4

Quality Control

Our tert-Butyl Peroxyisobutyrate is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high purity. The production process adheres to industry best practices and relevant safety standards for organic peroxides. Comprehensive analytical testing is performed, and a Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with each shipment to guarantee product integrity for your critical applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, well-ventilated area away from heat, sparks, and open flames. Due to its properties as an organic peroxide and being easily oxidized, it is recommended to store under appropriate conditions, separate from incompatible materials such as strong acids, reducing agents, and heavy metal compounds. Always refer to the Safety Data Sheet (SDS) for specific handling and storage instructions.

Specification

Item	Specification
Appearance	Clear, colorless liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.0 %
Active Oxygen Content	≥ 9.9 %
Density (at 20°C)	0.895 - 0.905 g/mL
Refractive Index (n20D)	1.400 - 1.405

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