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Thermo Scientific™ Pyridinium Tribromide 90+% (Technical Grade)
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Specifications:
| Application | Organic Synthesis | ||
| Storage Temperature | Ambient | ||
| Product Type | Laboratory Chemical | Forms | Powder |
| Product Brand | Thermo Fisher Scientific™, thermo Scientific | ||
| Product Grade | Analytical grade | Formula | C₅H₆Br₃N |
Thermo Scientific™ Pyridinium Tribromide (≥90%) is a reliable and convenient solid brominating agent widely used in organic synthesis as a safer and more manageable alternative to liquid bromine. This technical-grade reagent, also known as pyridinium bromide perbromide, provides a controlled source of electrophilic bromine, making it highly suitable for selective bromination reactions in research and industrial laboratories.
Its stable solid form allows for accurate handling, improved safety, and ease of storage, while maintaining strong reactivity for a wide range of halogenation applications. This reagent is particularly valuable in pharmaceutical, agrochemical, and fine chemical synthesis workflows.
Key Features
- Efficient Brominating Agent (≥90%) – Provides controlled release of bromine for selective reactions
- Safer Alternative to Liquid Bromine – Solid form improves handling and reduces exposure risks
- High Reactivity & Selectivity – Suitable for electrophilic bromination of aromatic and unsaturated compounds
- Technical Grade Quality – Ideal for research and industrial-scale applications
- Stable Solid Form – Easy weighing, transport, and storage under ambient conditions
- Consistent Performance – Manufactured to Thermo Scientific quality standards
Applications
- Electrophilic bromination of aromatic compounds
- Bromination of alkenes and activated organic substrates
- Oxidative bromination reactions
- Intermediate synthesis in pharmaceutical and agrochemical production
- Fine chemical and specialty chemical synthesis
- Organic reaction development and method optimization
- Laboratory-scale and industrial halogenation processes
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Name | Pyridinium Tribromide |
| Synonyms | Pyridinium bromide perbromide; Pyridine hydrobromide perbromide |
| Purity | ≥90% (iodometric) |
| CAS Number | 39416-48-3 |
| Molecular Formula | C₅H₆Br₃N |
| Molecular Weight | 319.82 g/mol |
| Appearance | Orange to red to brown powder/crystals |
| Melting Point | 127–133 °C (decomposition) |
| pH (1 M in water) | 3.8 – 4.5 |
| Assay (NaOH titration) | ≥99.4% |
| Chloride (Cl⁻) | ≤0.005% |
| Heavy Metals (as Pb) | ≤10 ppm |
| Iron (Fe) | ≤0.0005% |
| Storage | Ambient conditions |
| EINECS | 254-446-8 |
Safety & Handling
- Hazard Classification: Corrosive, Irritant
- UN Number: 3261
- ADR Classification: Class 8, Packing Group II
- Handle with appropriate PPE (gloves, goggles, lab coat)
- Use in a well-ventilated area or fume hood
- Avoid contact with skin, eyes, and moisture-sensitive conditions
Ordering Information
| Catalog Number | Pack Size | Packaging |
|---|---|---|
| 158361000 | 100 g | Glass bottle |
| 158365000 | 500 g | Glass bottle |
Thermo Scientific™ Pyridinium Tribromide offers a practical and efficient bromination solution for modern laboratories, combining reactivity, safety, and ease of handling in a single reagent. Its solid-state form eliminates many of the hazards associated with liquid bromine, while still delivering highly effective halogenation performance.
This makes it an essential reagent for chemists seeking precision, reproducibility, and operational safety in bromination workflows across pharmaceutical, academic, and industrial environments.
For laboratory and industrial use. Handle in accordance with safety regulations.
- Pack Size: 100 g 500 g