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A15235 (1-Hexadecyl)trimethylammonium bromide, 98%

CAS Number
Cetrimonium bromide
Cetyltrimethylammonium bromide

Stock No. Size Price ($) Quantity Availability
A15235-22 100g 41.00
A15235-36 500g 122.00
A15235-0I 5000g 713.00
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(1-Hexadecyl)trimethylammonium bromide, 98%


Chemical Properties

Formula Weight
Melting point
ca 245° dec.
Flash Point
Storage & Sensitivity
Hygroscopic. Ambient temperatures.
Soluble in alcohol, chloroform and water. Slightly soluble in acetone. Insoluble in diethyl ether and benzene.


(1-Hexadecyl)trimethylammonium bromide is a cationic surfactant in hair conditioning products. It acts as a phase-transfer catalyst for the preparation of polyamide, polycarbonate and polythiocarbonate. It facilitates ligand-free palladium salt-catalyzed Heck and Suzuki cross-coupling reactions in water. It is an active component of the topical antiseptic cetrimide and used in household products such as shampoos and cosmetics. As a buffer solution, it is involved in the extraction of DNA as well as in the synthesis of gold nanoparticles and silican nanoparticles.


Hygroscopic. Store in an airtight container. Incompatible with bases and strong oxidizing agents.

Literature References

Surfactant-type catalyst (see Appendix 2) with many applications:

O-Alkylation of alcohols and phenols; see 2,6-Dimethyl­phenol, A11947. Surfactant-assisted permanganate oxidations: Can. J. Chem., 67, 1381 (1989). Reduction of alkyl halides to alkanes using zinc powder in micelles: Synth. Commun., 19, 1649 (1989). Control of ortho-para ratio in the bromination of anilines: Tetrahedron Lett., 30, 6209 (1989). Also facilitates ligand-free palladium salt-catalyzed Heck and Suzuki cross-coupling reactions in water: Tetrahedron Lett., 46, 3357 (2005).

Chatterjee, S.; Castro, M.; Feller, J. F. Tailoring selectivity of sprayed carbon nanotube sensors (CNT) towards volatile organic compounds (VOC) with surfactants. Food Chem. 2015, 168, 262-269.

GHS Hazard and Precautionary Statements

Hazard Statements: H302-H315-H318-H335-H373

Harmful if swallowed. Causes skin irritation. Causes serious eye damage. May cause respiratory irritation. May cause damage to organs through prolonged or repeated exposure.

Precautionary Statements: P260-P264b-P270-P271-P280-P301+P312-P302+P352-P304+P340-P305+P351+P338-P310-P312-P314-P330-P332+P313-P362-P501c

Do not breathe dust/fume/gas/mist/vapours/spray. Wash face, hands and any exposed skin thoroughly after handling Do not eat, drink or smoke when using this product. Use only outdoors or in a well-ventilated area. Wear protective gloves/protective clothing/eye protection/face protection. IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell. IF ON SKIN: Wash with plenty of soap and water. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a POISON CENTER or doctor/physician. Get medical advice/attention if you feel unwell. Rinse mouth. If skin irritation occurs: Get medical advice/attention. Take off contaminated clothing and wash before reuse. Dispose of contents/ container to an approved waste disposal plant

Other References

Hazard Class
Packing Group
Harmonized Tariff Code


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