Description

(1-Methylpropylidene)Bis[tert-Butyl] Peroxide is a high-purity dialkyl peroxide used as a free radical initiator in polymerization and cross-linking reactions. Its controlled decomposition profile is critical for achieving precise molecular weight control and consistent polymer properties in demanding industrial processes. This product is essential for manufacturers in the polymer, specialty chemical, and advanced materials sectors who require reliable, high-performance initiators.

Application

• Polymerization Initiator: Used as a free radical source for the production of polyethylene (LDPE), polystyrene, and other vinyl polymers.
• Cross-Linking Agent: Facilitates the cross-linking of elastomers and polyolefins to enhance thermal and mechanical properties.
• Curing Agent for Unsaturated Polyester Resins: Enables the room-temperature or elevated-temperature curing of resins for composites and coatings.
• Synthesis of Specialty Chemicals: Serves as an intermediate or initiator in organic synthesis for pharmaceuticals and agrochemicals.
• Modifier for Polymer Properties: Used to control branching and molecular architecture in polymer chains to tailor performance characteristics.

Basic Information

Product Name	(1-Methylpropylidene)Bis[tert-Butyl] Peroxide
CAS No.	13653-62-8
Molecular Formula	C12H26O2
Molecular Weight	202.33 g/mol
Synonyms	2,2-Bis(tert-butylperoxy)butane; Di-tert-butyl 2,2-butylidene diperoxide; 1,1-Bis(tert-butylperoxy)butane; Butylidene bis(tert-butyl peroxide); Peroxide, bis(1,1-dimethylethyl) 2-butylidene; DTBPB; Luperox 220; Trigonox 22
EINECS	237-144-4

Quality Control

Our (1-Methylpropylidene)Bis[tert-Butyl] Peroxide is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including assay and purity verification by GC, to ensure it meets precise specifications for active oxygen content and impurity profiles. Certificates of Analysis (COA) documenting all critical parameters are available upon request 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 nature as an organic peroxide and being easily oxidized, it is recommended to store under an inert atmosphere where practical. Keep away from incompatible materials such as strong acids, reducing agents, and heavy metal compounds. Recommended storage temperature is 15-25°C.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 95.0 %
Active Oxygen Content	≥ 7.9 %
Density (at 20°C)	0.85 - 0.87 g/mL
Refractive Index (n20D)	1.405 - 1.415

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