Monopyridin-1-ium tribromide CAS : 39416-48-3


Monopyridin-1-ium tribromide CAS : 39416-48-3

Basic Information:

Product Name: Monopyridin-1-ium tribromide
Synonyms: Pyridine hydrobromide perbromide; Pyridinium tribromide; Pyridine Hydrobromide Perbromide; Pyridinium Hydrobromide Perbromide; pyridine, bromide, hydrogen salt (1:3)
CAS Number: 39416-48-3
Molecular Formula: C5H6Br3N1
Molecular Weight: 319.83
MOL File: 39416-48-3.mol
Structural Formula:


EINECS NO.: 254-446-8

Product Detail

Product Tags

Physical properties

Appearance: Orange red to Palm red solid
Melting Point: 127-133°C
Density: 2.9569 (rough estimate)
Refractive Index: 1.6800 (estimate)
Storage Conditions: Store at or below 20°C.
Solubility: Soluble in Methanol
Color: Orange red to Palm red
Water Solubility: Decomposes
Sensitivity: Lachrymatory (Merck 14,7973 BRN 3690144)
Stability: 1. It will not break down under normal circumstances, and there is no dangerous reaction. 2. Avoid contact with water, strong acids and alkalis; Toxic, when used in a fume hood.

Chemical Properties

Orange red to Palm red solid, melting point 133-136°C, non-volatile, insoluble in acetic acid.

Safety Information

Hazard Symbols: C, Xi
Hazard Codes: 37/38-34-36
Safety Statements: 26-36/37/39-45-24/25-27
UN Number (Dangerous Goods Transport): UN32618/PG2
WGK Germany: 3
Flash Point: 3
Hazard Note: Lachrymatory
TSCA: Yes Hazard Class: 8
Packaging Category: III
Customs Code: 29333100

Storage Condition

Store at 2 º C-10 ºC


Packed in 25kg/drum & 50kg /drum, or packed according to customer needs.


Pyridinium Bromide Perbromide (PHBP) is an intermediate for trisubstituted enones. It is used as a convenient brominating reagent in organic synthesis. PHBP is an excellent brominating agent with certain selectivity, mild reaction conditions, high yield, low side reactions, easy measurement, and ease of use. PHBP is a solid complex of bromine and pyridine hydrobromide, serving as a source of bromine in reactions. It is a milder brominating reagent compared to pure bromine and can be utilized for selective bromination and dehydrogenation reactions.

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