Cetrimonium Stearate

Title: Cetrimonium Stearate
CAS Registry Number: 124-23-2
CAS Name: N,N,N-Trimethyl-1-hexadecanaminium octadecanoate
Additional Names: hexadecyltrimethylammonium stearate; cetyltrimethylammonium stearate; trimethylhexadecylammonium stearate
Trademarks: Arquad 16 stearate; Dynafac
Molecular Formula: C37H77NO2
Molecular Weight: 568.01
Percent Composition: C 78.24%, H 13.66%, N 2.47%, O 5.63%
Line Formula: [CH3(CH2)16COO][CH3(CH2)15N(CH3)3]
Literature References: Prepn: Gautier et al., Bull. Soc. Chim. Fr. 1955, 634.
Properties: Solid, mp 142-143°. Practically insol in water, alcohol.
Melting point: mp 142-143°
NOTE: The commercial product, a waxy solid, also contains other alkyltrimethylammonium stearates, since the hexadecyl chain is derived from soybean fatty acids.
Status: This monograph has been retired and is no longer subject to revision or update.
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