Pyridinium tribromide
Synonym(s):Pyridinium bromide perbromide;Pyridine hydrobromide perbromide;Pyridine hydrobromide perbromide polymer-bound;Pyridine perbromide hydrobromide;Poly(4-vinylpyridine hydrobromide perbromide)
- CAS NO.：39416-48-3
- Empirical Formula: C5H6Br3N-2
- Molecular Weight: 319.82
- MDL number: MFCD00013223
- EINECS: 254-446-8
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-01-13 11:14:15
What is Pyridinium tribromide?
Chemical properties
red crystals
The Uses of Pyridinium tribromide
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.
The Uses of Pyridinium tribromide
In small-scale brominations, where it is much more convenient and agreeable to measure and use than elemental bromine.
The Uses of Pyridinium tribromide
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.
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.]
Properties of Pyridinium tribromide
| 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. |
| CAS DataBase Reference | 39416-48-3(CAS DataBase Reference) |
| EPA Substance Registry System | Pyridinium hydrogen tribromide (39416-48-3) |
Safety information for Pyridinium tribromide
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H315:Skin corrosion/irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
| Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P271:Use only outdoors or in a well-ventilated area. P280:Wear protective gloves/protective clothing/eye protection/face protection. P302+P352:IF ON SKIN: wash with plenty of soap and water. |
Computed Descriptors for Pyridinium tribromide
| InChIKey | YPCPFIMBGJOEKU-UHFFFAOYSA-O |
Pyridinium tribromide manufacturer
ALS India Life Sciences Pvt. Ltd
3Y
Phone:+91-8977036378
Whatsapp: +91 8008166674
product: Pyridinium tribromide 39416-48-3 93.20%
NSR Amino Organics
1Y
Phone:+91-9866989891
Whatsapp: +91-9866989891
product: Pyridinium tribromide 98%
ASM Organics
Andhra Pradesh
Phone:91-9866122393
Whatsapp: 91-9866122393
product: Pyridinium hydrobromide perbromide
New Products
Mirtazapine Impurity C/Mirtazapine Lactam Impurity Cyclopropane-1,1-dicarboxylic acid [1]Benzothieno[2,3-c]pyridine, 1,7-dichloro-8-methyl- (S)-3-Fluoro-pyrrolidine hydrochloride Cyclobutylamine 1-Bromo-2-Methoxy-3-Nitrobenzene 3-Oxocyclobutane-1-carboxylicacid (4-Bromophenyl)(3,4-dimethoxyphenyl)methanone N-Nitroso hydroxy Cetrizine EP Impurity-A Noradrenaline EP Impurity D/Noradrenaline Methyl Ether Cetirizine EP Impurity A/Cetirizine CBHP Impurity Lantanoprost rc B Clidinium Bromide Impurity 2-chloro-7-cyclopentyl-N,N-dimethylpyrrolo [2,3-d]pyrimidine-6-carbox amide 4-amino-2-fluoro-N- methylbenzamide N-(2-chloropyrimidin-4-yl)-N,2,3- trimethyl-2H- indazol 6-amine 5-Chloro-3- Methyl -1,3-2-benzoxazol-2(3H)-one 4-Bromo-2-fluoro-N-methylbenzamide N-Boc-1,4-butanediamine 4-Dimethylamino pyridine 2-Chlorotrityl Chloride 4-Bromoaniline 5-Bromo-2-chlorobenzoic acid 1,2,3,9-Tetrahydro-4(H)-carbazol-4-oneRelated products of tetrahydrofuran
You may like
-
Pyridinium bromide per Bromide 99%View Details
39416-48-3 -
Pyridinium Bromide Perbromide CAS 39416-48-3View Details
39416-48-3 -
Pyridinium tribromide, 90% CAS 39416-48-3View Details
39416-48-3 -
Pyridinium tribromide CAS 39416-48-3View Details
39416-48-3 -
Pyridinium tribromide CAS 39416-48-3View Details
39416-48-3 -
Pyridinium tribromide 39416-48-3 93.20%View Details
39416-48-3 -
Pyridinium Tribromide Cas No 39416 -48- 3View Details
39416-48-3 -
Pyridinium Tribromide Cas No.39416-48-3View Details
39416-48-3
Statement: All products displayed on this website are only used for non medical purposes such as industrial applications or scientific research, and cannot be used for clinical diagnosis or treatment of humans or animals. They are not medicinal or edible.