Phenyltrimethylammonium tribromide

Synonym(s):Phenyltrimethylammonium bromide dibromide;Phenyltrimethylammonium bromide-perbromide;Phenyltrimethylammonium tribromide

CAS NO.：4207-56-1
Empirical Formula: C9H14Br3N-2
Molecular Weight: 375.93
MDL number: MFCD00011789
EINECS: 224-127-8
SAFETY DATA SHEET (SDS)
Update Date: 2025-09-25 17:15:13

Phenyltrimethylammonium tribromide Structural

What is Phenyltrimethylammonium tribromide?

Chemical properties

orange crystalline powder

The Uses of Phenyltrimethylammonium tribromide

Phenyltrimethylammonium tribromide is used as brominating reagent for 1,2-addition of bromine to the double bond of α,β-unsaturated compounds.

The Uses of Phenyltrimethylammonium tribromide

Phenyltrimethylammonium tribromide
To the SM (340 mg, 2.7 mmol) in dry THF at RT was added Me3PhNBr3 (1.12 g, 3 mmol). The mixture was refluxed for 2 h, after which time it was quenched with H2O (2 x 20 mL) and extracted with EtOAc. The organic layer was dried (Na2SO4), concentrated, and purified by silica gel column chromatography (15% EtOAc/hexane) to provide the product. [100 mg]

Properties of Phenyltrimethylammonium tribromide

Melting point:	110-115 °C (dec.) (lit.)
Density	2.2071 (rough estimate)
refractive index	1.6500 (estimate)
storage temp.	Inert atmosphere,2-8°C
solubility	ethanol: 10 mg/mL hot, clear
form	Crystalline Powder
color	Orange
Water Solubility	Insoluble
Sensitive	Hygroscopic
BRN	3919459
CAS DataBase Reference	4207-56-1(CAS DataBase Reference)
EPA Substance Registry System	Benzenaminium, N,N,N-trimethyl-, (tribromide) (4207-56-1)

Safety information for Phenyltrimethylammonium tribromide

Signal word	Danger
Pictogram(s)	Corrosion Corrosives GHS05
GHS Hazard Statements	H314:Skin corrosion/irritation
Precautionary Statement Codes	P260:Do not breathe dust/fume/gas/mist/vapours/spray. P280:Wear protective gloves/protective clothing/eye protection/face protection. P363:Wash contaminated clothing before reuse. P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.