Description

tert-Butyl Peroxypivalate is a highly efficient organic peroxide initiator widely used in free-radical polymerization processes. Its primary value lies in its ability to decompose at moderate temperatures, providing excellent control over polymer molecular weight and structure. This makes it a critical component for manufacturers in the plastics, coatings, and adhesive industries seeking to produce high-performance polymers with specific properties.

Application

• Polymerization Initiator: Primary use as a free-radical initiator for the production of polyvinyl chloride (PVC), low-density polyethylene (LDPE), and various acrylic polymers.
• Crosslinking Agent: Used in the curing and crosslinking of unsaturated polyester resins for fiberglass-reinforced plastics (FRP) and composite materials.
• Synthesis of Acrylic Resins: Essential for the bulk, solution, and suspension polymerization of methyl methacrylate (MMA) and other acrylic monomers.
• Manufacture of Adhesives & Sealants: Initiates polymerization in pressure-sensitive adhesives (PSA) and structural adhesive formulations.
• Production of Synthetic Rubbers: Employed in the polymerization of styrene-butadiene rubber (SBR) and other elastomers.
• Coatings & Paints: Serves as a key component in the production of solvent-based and high-solid coating resins.

Basic Information

Product Name	tert-Butyl Peroxypivalate
CAS No.	927-07-1
Molecular Formula	C9H18O3
Molecular Weight	174.24 g/mol
Synonyms	tert-Butyl Perpivalate; Perpivalic Acid tert-Butyl Ester; Trigonox 25-C75; Luperox 11; TBPP; t-Butyl Peroxypivalate; Butyl tert-butyl peroxy pivalate; 2,2-Dimethylpropanoic acid 1,1-dimethylethyl ester
EINECS	213-145-7

Quality Control

Our tert-Butyl Peroxypivalate is manufactured under stringent quality management systems to ensure batch-to-batch consistency and reliability. Each lot undergoes comprehensive analytical testing, including assay and impurity profiling, to meet exacting industry specifications. Certificates of Analysis (COA) detailing purity, active oxygen content, and other critical parameters are provided with every shipment to support your quality assurance protocols.

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 highly volatile and thermally sensitive nature, storage temperatures should be maintained below 25°C (77°F). Keep away from incompatible materials such as strong reducing agents, acids, bases, and heavy metal compounds. Follow all local and international regulations for the storage of organic peroxides.

Specification

Item	Specification
Appearance	Clear, colorless liquid
Identification (IR)	Conforms
Assay (GC)	≥ 75.0% (typically in phlegmatizer)
Active Oxygen Content	≥ 8.60%
Density (at 20°C)	0.85 - 0.87 g/cm³
Refractive Index (n20D)	1.410 - 1.415
Water Content (Karl Fischer)	≤ 0.1%

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