Description

Propaneperoxoic Acid, 1,1-Dimethylethyl Ester is an organic peroxide ester, widely recognized as tert-Butyl peroxypropionate. This compound serves as a highly effective and versatile free-radical initiator, prized for its balanced reactivity and decomposition profile. It is a critical component for industrial manufacturers requiring controlled polymerization or cross-linking processes. Key sectors that utilize this initiator include polymer synthesis, resin production, and specialty chemical manufacturing.

Application

• Polymerization Initiator: Primary use as a free-radical initiator for the production of polymers like polyethylene (LDPE), polystyrene, and polyvinyl chloride (PVC).
• Cross-Linking Agent: Used in the curing and cross-linking of unsaturated polyester resins and acrylic resins for composites and coatings.
• Synthesis Intermediate: Employed in organic synthesis for introducing peroxy groups or facilitating oxidation reactions in pharmaceutical and agrochemical intermediates.
• Adhesive & Sealant Production: A key component in formulations for acrylic-based adhesives and sealants, providing controlled cure rates.
• Fiberglass Reinforced Plastics (FRP): Initiator for the curing of resins in the manufacture of fiberglass products, including automotive parts and marine components.
• Modifier for Engineering Plastics: Used to modify the properties of engineering thermoplastics through graft polymerization or controlled degradation.

Basic Information

Product Name	Propaneperoxoic Acid, 1,1-Dimethylethyl Ester
CAS No.	14206-05-4
Molecular Formula	C7H14O3
Molecular Weight	146.18 g/mol
Synonyms	tert-Butyl peroxypropionate; tert-Butyl propyl peroxide; Peroxypropionic acid tert-butyl ester; TBPP; 1,1-Dimethylethyl propaneperoxoate; Propionyl tert-butyl peroxide; tert-Butyl perpropionate; 2-Methyl-2-propyl propylperoxy carbonate (common misnomer)
EINECS	238-054-1

Quality Control

Our Propaneperoxoic Acid, 1,1-Dimethylethyl Ester is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, active oxygen content, and impurity profiles. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing key parameters such as assay, identity, and specific tests for peroxides. Our quality commitment aligns with industrial standards for polymerization initiators, ensuring batch-to-batch consistency and performance reliability for your processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, well-ventilated area away from heat, sparks, and open flames. Recommended storage temperature is below 25°C (77°F). Due to its nature as an organic peroxide and being easily oxidized (store under inert atmosphere), it must be segregated from reducing agents, strong acids, bases, and other incompatible materials. Keep container tightly sealed when not in use to minimize loss due to high volatility.

Specification

Item	Specification
Appearance	Clear, colorless liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.0 %
Active Oxygen Content	Contact for details
Water Content (Karl Fischer)	≤ 0.1 %
Acidity (as Propionic Acid)	≤ 0.5 %
Refractive Index (n20D)	1.405 - 1.415
Density (20°C)	0.92 - 0.96 g/cm³

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