TETRAPENTYLAMMONIUM BROMIDE

CAS NO.：866-97-7
Empirical Formula: C20H44BrN
Molecular Weight: 378.48
MDL number: MFCD00011856
EINECS: 212-756-0
SAFETY DATA SHEET (SDS)
Update Date: 2026-04-24 14:58:55

What is TETRAPENTYLAMMONIUM BROMIDE?

Chemical properties

WHITE SHINY FLAKES

The Uses of TETRAPENTYLAMMONIUM BROMIDE

Tetrapentylammonium bromide can be used:

As a versatile structure-directing agent for the synthesis of Zeolite-like heterobimetallic cyanide frameworks.
As an alkylating agent for rhodium(I)-catalyzed alkylation reaction of benzylic amines and for N-alkylation of azaheterocycles.
As a precursor to prepare a Cobalt-complex, {[(Pentyl)₄N]₃CoBr₃}Cl₂, which is used as a catalyst in the synthesis of multiwalled carbon nanotubes (MWCNTs).

Electrochemical synthesis of stable graphite intercalation compounds (GICs) containing tetrapentylammonium cations has been reported.

General Description

Tetrapentylammonium bromide is a quaternary ammonium salt with pentyl chains and a bromide counterion, which is generally used as a phase transfer catalyst.

Purification Methods

Crystallise it from pet ether, *benzene or acetone/ether mixtures and dry in vacuum at 40-50o for 2 days. It is used in ion-paired chromatography (Sagara et al. J Chromatogr 328 289 1985). [Beilstein 4 IV 677.]

Properties of TETRAPENTYLAMMONIUM BROMIDE

Melting point:	100-101 °C (lit.)
Density	0.92333 g/cm3 (35.00℃)
refractive index	1.5260 (estimate)
storage temp.	Inert atmosphere,Room Temperature
Water Solubility	Soluble in water
form	Shiny Flakes
color	White
PH	pH(10g/l, 25℃) : 5.0～7.0
λmax	λ: 240 nm Amax: 0.04 λ: 250 nm Amax: 0.03 λ: 260 nm Amax: 0.02 λ: 500 nm Amax: 0.02
BRN	3658171
EPA Substance Registry System	Tetrapentylammonium bromide (866-97-7)

Safety information for TETRAPENTYLAMMONIUM BROMIDE

Signal word	Warning
Pictogram(s)	Exclamation Mark Irritant GHS07
GHS Hazard Statements	H315:Skin corrosion/irritation H319:Serious eye damage/eye 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. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.