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Pyridinium tribromide

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Pyridinium tribromide Basic information

Product Name:
Pyridinium tribromide
Synonyms:
  • Pyridinium bromide perbromide ,90%
  • pyridin-1-iuM tribroMide
  • PyridiniuM broMide perbroMide, 90+% 100GR
  • Monopyridin-1-iuM tribroMide
  • Pyridine Hydrobromide Perbromide Pyridinium Tribromide
  • PyridiniuM broMide perbroMide, 90+%, technical
  • PYRIDINIUM BROMIDE-PERBROMIDE FOR SYNTHE
  • PyridiniuM TribroMide (>90%)
CAS:
39416-48-3
MF:
C5H6Br3N-2
MW:
319.82
EINECS:
254-446-8
Product Categories:
  • Bromination
  • Halogenation
  • Pyridinium Compounds
  • Synthetic Organic Chemistry
Mol File:
39416-48-3.mol
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Pyridinium tribromide Chemical Properties

Melting point:
127-133 °C
Density 
2.9569 (rough estimate)
refractive index 
1.6800 (estimate)
storage temp. 
Store at <= 20°C.
solubility 
soluble in Methanol
form 
Powder, Crystals and/or Chunks
color 
Red-orange to red to brown
Water Solubility 
decomposes
Sensitive 
Lachrymatory
Merck 
14,7973
BRN 
3690144
Stability:
Stable. Incompatible with strong oxidizing agents, strong bases.
InChIKey
YPCPFIMBGJOEKU-UHFFFAOYSA-O
CAS DataBase Reference
39416-48-3(CAS DataBase Reference)
EPA Substance Registry System
Pyridinium hydrogen tribromide (39416-48-3)
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Safety Information

Hazard Codes 
C,Xi
Risk Statements 
37/38-34-36
Safety Statements 
26-36/37/39-45-24/25-27
RIDADR 
UN 3261 8/PG 2
WGK Germany 
3
3
Hazard Note 
Lachrymatory
TSCA 
Yes
HazardClass 
8
PackingGroup 
III
HS Code 
29333100

MSDS

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Pyridinium tribromide Usage And Synthesis

Chemical Properties

red crystals

Uses

Pyridine hydrobromide perbromide is used as a brominating reagent in alfa-bromination and alfa-thiocyanation of ketones, phenols, unsaturated and aromatic ethers. It is used as a raw material in the preparation of beta-adrenergic blocking agents. Furthermore, it is used as an analytical reagent.

Uses

Pyridinium Tribromide is a reagent used in the α-thiocyanation of ketones and has also been applied to the synthesis of β-adrenergic blocking agents (also known as β-blockers) for patients with heart failure.

Uses

In small-scale brominations, where it is much more convenient and agreeable to measure and use than elemental bromine.

Purification Methods

It is a very good brominating agent-liberating one mol of Br2. Purify it by recrystallisation from glacial acetic acid (33g from 100mL of AcOH) to give orange-red crystals. [Fieser & Fieser Reagents for Organic Chemistry 1 967 1967, Englert & McElvain J Am Chem Soc 51 865 1929, Beilstein 20 II 103, 20/5 V 181.]

Pyridinium tribromide Preparation Products And Raw materials

Preparation Products

Raw materials

Pyridinium tribromideSupplier

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