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?? ??:
57-09-0
???:
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???(??):
?????????????;?????????????;??????????
???:
Hexadecyl trimethyl ammonium bromide
???(??):
CTAB;CETYLTRIMETHYLAMMONIUM BROMIDE;CETRIMONIUM BROMIDE;HEXADECYLTRIMETHYLAMMONIUM BROMIDE;CTMAB;HTAB;CTMB;CTABR;centimide;Cetrimonium Bromide (CTAB)
CBNumber:
CB5743258
???:
C19H42BrN
??? ??:
364.45
MOL ??:
57-09-0.mol
MSDS ??:
SDS

??????????? ?? ??

???
248-251 °C(lit.)
??
1.1107 (rough estimate)
???
1.5260 (estimate)
???
244 °C
?? ??
Store below +30°C.
???
H2O: 50 mg/mL
??? ??
??
??
???
??
?? ??
pH ??
5 - 7
??????(pH)
5.0-7.0 (25℃, 0.1M in H2O)
???
13g/L(20℃)
??
Hygroscopic
?? ??(λmax)
λ: 260 nm Amax: 0.06
λ: 280 nm Amax: 0.05
Merck
14,2025
BRN
3598189
???
????. ?? ???? ???? ????. ????? ??????.
InChIKey
LZZYPRNAOMGNLH-UHFFFAOYSA-M
CAS ??????
57-09-0(CAS DataBase Reference)
EPA
Cetyl trimethyl ammonium bromide (57-09-0)
??
  • ?? ? ?? ??
  • ?? ? ???? ?? (GHS)
??? ?? Xn,N
?? ???? ?? 22-37/38-41-50-50/53-36/37/38-48/22
????? 26-39-61-37/39-60-36
????(UN No.) UN 3077 9/PG 3
WGK ?? 3
RTECS ?? BQ7875000
F ?????? 3
TSCA Yes
?? ?? 9
???? III
HS ?? 29239000
?? LD50 in mice, rats (mg/kg): 32.0, 44.0 i.v. (Isomaa, Bjondahl)
???? ?? KE-34534
?????? ??? 2000-1-509
?? ? ???? ????: ????; ???(??)????: ??? ?????[Cetrimonium hydroxide]? ????? ??[Cetrimonium, salts] ? ?? 25% ?? ??? ???
????(GHS): GHS hazard pictogramsGHS hazard pictogramsGHS hazard pictogramsGHS hazard pictograms
?? ?: Danger
??·?? ??:
?? ??·?? ?? ?? ?? ?? ?? ? ?? ?? P- ??
H302 ??? ??? ?? ?? ?? - ?? ?? 4 ?? GHS hazard pictograms P264, P270, P301+P312, P330, P501
H315 ??? ??? ??? ????? ?? ????? ?? 2 ?? GHS hazard pictograms P264, P280, P302+P352, P321,P332+P313, P362
H318 ?? ?? ??? ??? ?? ? ?? ?? ??? ?? ?? 1 ?? GHS hazard pictograms P280, P305+P351+P338, P310
H335 ?? ???? ??? ? ?? ?? ???? ?? - 1? ??;???? ?? ?? 3 ?? GHS hazard pictograms
H373 ??? ?? ?? ???? ??(??, ??? ?? ??? ?? ??? ??)? ??? ??? ? ?? ?? ???? ?? - ?? ?? ?? 2 ?? P260, P314, P501
H410 ??? ??? ?? ????? ?? ??? ?? ????? ?? - ?? ?? 1 ?? GHS hazard pictograms P273, P391, P501
??????:
P273 ???? ???? ???.
P280 ????/???/???/?????? ?????.
P301+P312 ??? ???? ??? ????(??)? ??? ????.
P302+P352 ??? ??? ??? ?? ????.
P305+P351+P338 ?? ??? ? ?? ?? ???? ????. ???? ?????? ?????. ?? ????.
P314 ???? ??? ???? ??·??? ????.
NFPA 704
3
3 0

??????????? ?? MSDS


Hexadecyl trimethyl ammonium bromide

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??

??(??).

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White powder. Soluble in water, alcohol, and chloroform.

??

antiinfectant

??

ChEBI: The organic bromide salt that is the bromide salt of cetyltrimethylammonium; one of the components of the topical antiseptic cetrimide.

?? ??

Hexadecyltrimethylammonium bromide is a titrant for the potentiometric titration of perchlorate with ionselective electrodes.

Purification Methods

Crystallise it from EtOH, EtOH/*benzene or from wet acetone after extracting twice with pet ether. Shake it with anhydrous diethyl ether, filter and dissolve it in a little hot MeOH. After cooling in the refrigerator, the precipitate is filtered off at room temperature and re-dissolved in MeOH. Anhydrous ether is added and, after warming to obtain a clear solution, it is cooled and the crystalline material is collected. [Dearden & Wooley J Phys Chem 91 2404 1987, Hakemi et al. J Am Chem Soc 91 120 1987, Beilstein 4 IV 819.]

?? ??

[1] Liu, Tingting et al. “Hexadecyl trimethyl ammonium bromide assisted growth of NiCo2O4@reduced graphene oxide/ nickel foam nanoneedle arrays with enhanced performance for supercapacitor electrodes?.” RSC Advances 7 (2022): 4029–4041.

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