Description

Poly(4-Vinylpyridinium Tribromide) is a polymeric quaternary ammonium salt with a tribromide counterion, known for its utility as a stable, solid-phase brominating agent. This compound matters for industrial and research applications where a safe, controllable, and non-volatile source of bromine is required, eliminating the hazards associated with handling molecular bromine. It is needed by chemical manufacturers and R&D laboratories in the pharmaceutical, agrochemical, and specialty chemical sectors for selective bromination reactions and as a polymer-supported reagent.

Application

• Solid-Phase Brominating Agent: For the selective bromination of alkenes, alkynes, and aromatic compounds in organic synthesis.
• Pharmaceutical Intermediate Synthesis: Used in the preparation of brominated active pharmaceutical ingredients (APIs) and key intermediates.
• Polymer-Supported Reagent: Facilitates simplified work-up and potential recycling in catalytic or stoichiometric reactions.
• Agrochemical Manufacturing: Employed in the synthesis of bromine-containing herbicides, fungicides, and pesticides.
• Research & Development: A valuable tool in academic and industrial labs for exploring new bromination methodologies.
• Material Science: Potential use in modifying polymer surfaces or creating functional materials with bromine-containing groups.

Basic Information

Product Name	Poly(4-Vinylpyridinium Tribromide)
CAS No.	91650-35-0
Molecular Formula	(C7H8N·Br3)n
Molecular Weight	Contact for details (Polymer)
Synonyms	Poly(4-vinylpyridine) tribromide complex; PVPy·Br3; Poly(4-vinylpyridinium) tribromide; 4-Ethenylpyridine homopolymer tribromide; Poly(N-vinyl-4-pyridinium) tribromide; Poly(4-vinylpyridine)-Br3; Solid brominating reagent PVP-Br3
EINECS	Contact for details

Quality Control

Our Poly(4-Vinylpyridinium Tribromide) is manufactured under controlled conditions to ensure batch-to-batch consistency and high reactivity. Each lot undergoes rigorous quality testing, including analysis of active bromine content and polymer characteristics. A Certificate of Analysis (COA) detailing purity, assay, and physical properties is provided with every shipment to ensure compliance with your specific application requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive) and light-sensitive; containers must be kept tightly sealed to minimize exposure to atmospheric moisture and light to maintain stability and efficacy.

Specification

Item	Specification
Appearance	Orange to dark brown solid
Identification (IR)	Conforms to structure
Assay (Active Br Content)	≥ 95%
Moisture Content (KF)	≤ 2.0%
Solubility	Partially soluble in polar organic solvents

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