Description

Pentaerythritol Tetrakis(2-Bromoisobutyrate) is a specialized multi-functional brominated ester, widely recognized as a highly efficient ATRP (Atom Transfer Radical Polymerization) initiator. This compound is critical for the controlled synthesis of well-defined polymers with precise molecular weights and architectures. It is essential for R&D and production in advanced material science, particularly for creating block copolymers, star polymers, and polymer brushes. Its consistent performance ensures reproducibility in complex polymerization processes.

Application

• ATRP Initiator: Primary application for the controlled radical polymerization of methacrylates, acrylates, and styrenes.
• Star Polymer Synthesis: Core molecule for the preparation of multi-arm (tetra-functional) star-shaped polymers.
• Surface-Initiated Polymerization: Used to graft polymer brushes from various substrates for surface modification.
• Block Copolymer Production: Enables the synthesis of block copolymers with tailored properties for specialty plastics and elastomers.
• Nanomaterial Fabrication: Key component in the preparation of polymer-coated nanoparticles and other hybrid nanomaterials.
• Bioconjugation & Drug Delivery: Facilitates the creation of functionalized polymer carriers for biomedical applications.

Basic Information

Product Name	Pentaerythritol Tetrakis(2-Bromoisobutyrate)
CAS No.	243991-62-0
Molecular Formula	C21H32Br4O8
Molecular Weight	728.00 g/mol
Synonyms	PETB; Pentaerythritol Tetrakis(2-Bromo-2-methylpropionate); 2-Bromo-2-methylpropanoic Acid 2,2-Bis[[(2-Bromo-2-methyl-1-oxopropoxy)methyl]-1,3-propanediyl Ester; Tetrakis(2-Bromoisobutyryloxymethyl)methane; Pentaerythritol Tetrabromoisobutyrate; ATRP Initiator 4Br; Tetrafunctional Bromoester Initiator
EINECS	Contact for details

Quality Control

Our Pentaerythritol Tetrakis(2-Bromoisobutyrate) is manufactured under strict quality protocols to ensure high purity and batch-to-batch consistency, which is paramount for reproducible polymerization kinetics. Each lot is analyzed via NMR, HPLC, and elemental analysis to confirm identity, purity, and bromine content. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); keep the container tightly sealed under an inert atmosphere (e.g., nitrogen or argon) for long-term storage to prevent hydrolysis and maintain efficacy.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Bromine Content	Contact for details
Melting Point	Contact for details
Heavy Metals	< 10 ppm
Residual Solvents	Complies with ICH guidelines

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