140-72-7

Basic information

• Product Name: 1-Hexadecylpyridinium bromide
• Synonyms: acetoquatcpb;bromocet;cetapharm;cetasol;cetazol;cetylpyridiumbromide;morpancbp;n-cetylpyridiniumbromide
• CAS NO: 140-72-7
• Molecular Formula: Br*C₂₁H₃₈N
• Molecular Weight: 384.44
• EINECS: 205-428-3
• Product Categories: Cationic Surfactants;Functional Materials;Heterocyclic Quarternary Ammonium Salts (Surfactants);Pyridinium Compounds;Surfactants;pharma material
• Mol File: 140-72-7.mol
• Article Data: 8

Chemical Properties

• Melting Point: 63-69 °C
• Appearance: white to cream coloured powder
• Storage Temp.: Inert atmosphere,Room Temperature
• Solubility: soluble in Chloroform,Methanol,Acetone,Ethanol
• Water Solubility: 5 g/L (20 ºC)
• BRN: 3778948
• CAS DataBase Reference: 1-Hexadecylpyridinium bromide(CAS DataBase Reference)
• NIST Chemistry Reference: 1-Hexadecylpyridinium bromide(140-72-7)
• EPA Substance Registry System: 1-Hexadecylpyridinium bromide(140-72-7)

Safety Data

• Hazard Codes: T+,Xi,Xn
• Statements: 22-26-36/37/38-20/21/22
• Safety Statements: 26-28-36/37-45-36/37/39-22-36
• RIDADR: 2811
• WGK Germany: 3
• RTECS: UU4848000
• HazardClass: 6.1(b)
• PackingGroup: III
• Hazardous Substances Data: 140-72-7(Hazardous Substances Data)

Usage

Chemical Properties

white to cream coloured powder

Definition

ChEBI: A pyridinium salt that has N-hexadecylpyridinium as the cation and bromide as the anion.

InChI:InChI=1/C21H38N.BrH/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-16-19-22-20-17-15-18-21-22;/h15,17-18,20-21H,2-14,16,19H2,1H3;1H/q+1;/p-1

Synthetic route

pyridine (110-86-1) + hexadecanyl bromide (112-82-3) → cetylpyridinium bromide (140-72-7)

Conditions	Yield
In ethanol for 40h; Reflux;	99%
In toluene at 20 - 110℃; for 25h; Inert atmosphere;	92%
In acetonitrile for 24h; Reflux;	75%

4-(4-Dimethylamino-phenylazo)-benzenesulfonate1-hexadecyl-pyridinium; → methyl orange (547-58-0) + cetylpyridinium bromide (140-72-7)

Conditions	Yield
With sodium bromide at 19.9℃; Equilibrium constant; var. temps.;

N-(phosphonemethyl)glycine (1071-83-6) + cetylpyridinium bromide (140-72-7) → C21H38N(1+)*C3H7NO5P(1-)

Conditions	Yield
Stage #1: N-(phosphonemethyl)glycine With potassium hydroxide at 40℃; Stage #2: cetylpyridinium bromide In methanol at 20℃; for 0.5h;	99%

N1-(2,6-diisopropylphenyl)benzene-1,2-diamine (1227099-72-0) + cetylpyridinium bromide (140-72-7) → 2-(dibenzo[b,d]furan-4-yl)-1-(2,6-diisopropylphenyl)-1H-benzo[d]imidazole (1447716-80-4)

Conditions	Yield
In tetrahydrofuran; water	94%

cetylpyridinium bromide (140-72-7) + ampicillin sodium salt (69-52-3, 15497-42-4, 54579-43-0, 132437-57-1) → (2S,5R,6R)-6-(R-2-amino-2-phenylacetamido)-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo(3.2.0)heptane-2-carboxylate cetylpyridinium

Conditions	Yield
In chloroform; water at 20℃; for 48h;	92%

cetylpyridinium bromide (140-72-7) + 4-chloro-3-nitro-chromen-2-one (38464-20-9) → 3-Nitro-2-oxo-2H-chromene-4-thiolate1-hexadecyl-pyridinium;

Conditions	Yield
With sodium sulfide In ethanol at 18 - 20℃; for 1h;	91%

cetylpyridinium bromide (140-72-7) → cetylpyridinium tribromide

Conditions	Yield
With potassium peroxymonosulfate; sodium bromide In water for 0.5h;	88%

cetylpyridinium bromide (140-72-7) + 2-methoxy-phenol (90-05-1) → 2C21H38N(1+)*C7H8O2*2Br(1-)

Conditions	Yield
In water

12-molybdosilicic acid + cetylpyridinium bromide (140-72-7) → 4[C5H5N(CH2)15CH3](1+)*SiMo12O40(4-)=[C5H5N(CH2)15CH3]4SiMo12O40

Conditions	Yield
In water filtration, washing (distd. water), drying in vac.;

molybdophosphoric acid hydrate + cetylpyridinium bromide (140-72-7) → [π-C5H5N(+)(CH2)15CH3]3(PMo12O40)(3-)

Conditions	Yield
In water H3PMo12O40*nH2O in water added to soln. of C5H5N(C16H33)Br in water withstirring, stirred for 3 h; filtration, washing (distd. water), drying under vac.;

cetylpyridinium bromide (140-72-7) + rhodium(III)chloride (10049-07-7) + 4-(2-pyridylazo) resorcinol → Rh(C6H3O2(N2C5H4N))2(1-)*2C5H5NC16H33(1+)=Rh(C6H3O2(N2C5H4N))2(C5H5NC16H33)2(1+)

Conditions	Yield
In hydrogenchloride Kinetics;

phosphotungstic acid + cetylpyridinium bromide (140-72-7) → tris(cetylpyridinium) 12-tungstophosphate

Conditions	Yield
In water H3PW12O40 in distd. water added to soln. of C5H5NC16H33Br in distd. water with stirring at ambient temp., stirred for 3.5 h; filtration, washing (distd. water), drying (room temp. under vac.), elem. anal.;

4K(1+)*Ge4S10(4-) = K4Ge4S10 + cetylpyridinium bromide (140-72-7) + antimony triiodide (7790-44-5) → (C5H5NCH2(CH2)14CH3)2Sb1.3Ge4S11

Conditions	Yield
In formamide mixed, pptd., aged at 80°C for 24 h; filtered, washed (formamide, methanol), dried (vac.), elem. anal., XRD;

4K(1+)*Ge4S10(4-) = K4Ge4S10 + cetylpyridinium bromide (140-72-7) + tin(IV) iodide → (C5H5NCH2(CH2)14CH3)2Sn1.6Ge4S11.8

Conditions	Yield
In formamide mixed, pptd., aged at 80°C for 24 h; filtered, washed (formamide, methanol), dried (vac.), elem. anal., XRD;

tetrapotassium decaselenidotetragermanate + cetylpyridinium bromide (140-72-7) + antimony triiodide (7790-44-5) → (C5H5NCH2(CH2)14CH3)2Sb1.5Ge4Se11.5

Conditions	Yield
In formamide mixed, pptd., aged at 80°C for 24 h; filtered, washed (formamide, methanol), dried (vac.), elem. anal., XRD;

tetrapotassium decaselenidotetragermanate + cetylpyridinium bromide (140-72-7) + tin(IV) iodide → (C5H5NCH2(CH2)14CH3)2Sn1.7Ge4Se12.3

Conditions	Yield
In formamide mixed, pptd., aged at 80°C for 24 h; filtered, washed (formamide, methanol), dried (vac.), elem. anal., XRD;

Upstream product

• 110-86-1 pyridine 
• 112-82-3 hexadecanyl bromide 

Downstream Products

• 1447716-80-4 2-(dibenzo[b,d]furan-4-yl)-1-(2,6-diisopropylphenyl)-1H-benzo[d]imidazole 
• 34359-90-5 N-Hexadecylpyridinium p-toluenesulphonate 

Related news

Conductance study of the thermodynamics of micellization of 1-Hexadecylpyridinium bromide (cas 140-72-7) in (water + cosolvent)09/30/2019

The conductivity of (cosolvent + water) in the presence of increasing concentration of 1-hexadecylpyridinium bromide was measured at various temperatures. Acetonitrile, dimethylformamide, dimethylsulfoxide, dioxane and ethylene glycol were used as cosolvents. From the conductivity data, the crit...detailed

Aggregation behaviour and thermodynamics of mixed micellization of 1-Hexadecylpyridinium bromide (cas 140-72-7) and ionic liquid in ethylene glycol/water binary mixtures09/29/2019

Micellar behavior of binary combinations of ionic liquid, 1-tetradecyl-3-methylimidazolium bromide, with conventional cationic surfactant 1-hexadecylpyridinium bromide was investigated by means of conductometry to study the effect of cosolvent and water content and temperature. The critical mice...detailed

Conductance study of the thermodynamics of micellization of 1-Hexadecylpyridinium bromide (cas 140-72-7) in mixed solvents containing dilute electrolyte solutions10/01/2019

The critical micelle concentration (CMC) of hexadecylpyridinium bromide (HDPB) is determined conductometrically in binary mixtures of water + cosolvent at various temperatures and at low concentrations of sodium bromide, ranging from 0 to 2.4 × 10−2 M. Dimethylsulfoxide (DMSO) and acetonitrile ...detailed

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