Aliquat 336

Aliquat 336
Names
	IUPAC name N-Methyl-N,N,N-trioctylammonium chloride
	Other names Starks' catalyst; Tricaprylmethylammonium chloride, Methyltrioctylammonium chloride
Identifiers
CAS Number	63393-96-4 ;
3D model (JSmol)	Interactive image; Interactive image;
ChemSpider	19948 ;
ECHA InfoCard	100.023.542
PubChem CID	21218;
RTECS number	UZ2997500;
UNII	YNE6ALT384 ;
CompTox Dashboard (EPA)	DTXSID1044487 ;
	InChI InChI=1S/C25H54N.ClH/c1-5-8-11-14-17-20-23-26(4,24-21-18-15-12-9-6-2)25-22-19-16-13-10-7-3;/h5-25H2,1-4H3;1H/q+1;/p-1 Key: XKBGEWXEAPTVCK-UHFFFAOYSA-M ; InChI=1/C25H54N.ClH/c1-5-8-11-14-17-20-23-26(4,24-21-18-15-12-9-6-2)25-22-19-16-13-10-7-3;/h5-25H2,1-4H3;1H/q+1;/p-1 Key: XKBGEWXEAPTVCK-REWHXWOFAD;
	SMILES CCCCCCCC[N+](CCCCCCCC)(C)CCCCCCCC.[Cl-]; [Cl-].C(CCCCCC[N+](CCCCCCCC)(CCCCCCCC)C)C;
Properties
Chemical formula	C25H54ClN
Molar mass	404.16 g·mol−1
Appearance	Colorless viscous liquid
Density	0.884 g/cm3
Melting point	−20 °C (−4 °F; 253 K)
Boiling point	225 °C (437 °F; 498 K)
Viscosity	1500 mPa·s at 30 °C
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	Toxic (USA)
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H301, H315, H318, H319, H410
Precautionary statements	P264, P270, P273, P280, P301+P310, P302+P352, P305+P351+P338, P310, P321, P330, P332+P313, P337+P313, P362, P391, P405, P501
Flash point	113 °C (235 °F; 386 K) (closed cup)
Safety data sheet (SDS)	External MSDS
Related compounds
Related	Aliquat 100, Aliquat 134, Aliquat 175, Aliquat HTA-1
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Aliquat 336 (Starks' catalyst) is a quaternary ammonium salt used as a phase transfer catalyst and metal extraction reagent. It contains a mixture of C₈ (octyl) and C₁₀ (decyl) chains with C₈ predominating. It is an ionic liquid.^[1]

Applications

Organic Chemistry

Aliquat 336 is used as a phase transfer catalyst,^[2] including in the catalytic oxidation of cyclohexene to 1,6-hexanedioic acid.^[3] This reaction is an example of green chemistry, as it is more environmentally friendly than the traditional method of oxidizing cyclohexanol or cyclohexanone with nitric acid or potassium permanganate, which produce hazardous wastes.^[4]

Aliquat 336 was used in the total synthesis of manzamine A by Darren Dixon.^[5]

Solvent extraction of metals

Aliquat 336 has been used for the extraction of metals by acting as a liquid anion exchanger. It is commonly used as a solution in hydrocarbon solvents such as aromatic kerosene. Aliphatic kerosene can also be used, but requires the addition of a phase modifier (typically a long chain alcohol) to prevent the formation of third phase.

Waste treatment

Several applications have been successfully carried out with Aliquat 336, such as the recovery of acids or acid salts, or the removal of certain metals from wastewater. In addition, foaming has also been controlled by using this agent during the treatment of wastewater containing anionic surfactants.

References

^ Litaiem, Yousra; Dhahbi, Mahmoud (2015). "Physicochemical Properties of an Hydrophobic Ionic Liquid (Aliquat 336) in a Polar Protic Solvent (Formamide) at Different Temperatures". Journal of Dispersion Science and Technology. 36 (5): 641. doi:10.1080/01932691.2013.862170. S2CID 95868263.
^ C. M. Starks (1971). "Phase-transfer catalysis. I. Heterogeneous reactions involving anion transfer by quaternary ammonium and phosphonium salts". J. Am. Chem. Soc. 93: 195–199. doi:10.1021/ja00730a033.
^ S. M. Reed; J. E. Hutchison (2000). "An Environmentally Benign Synthesis of Adipic Acid". J. Chem. Educ. 77 (12): 1627–8. doi:10.1021/ed077p1627.
^ Ameta, Suresh C; Ameta, Rakshit (2013-09-11). Green Chemistry: Fundamentals and Applications. CRC Press. ISBN 9781466578265.
^ Jakubec, Pavol; Hawkins, Alison; Felzmann, Wolfgang; Dixon, Darren J. (2012). "Total Synthesis of Manzamine A and Related Alkaloids". Journal of the American Chemical Society . 134 (42): 17482–17485. doi:10.1021/ja308826x. PMID 23039372.

[1] Litaiem, Yousra; Dhahbi, Mahmoud (2015). "Physicochemical Properties of an Hydrophobic Ionic Liquid (Aliquat 336) in a Polar Protic Solvent (Formamide) at Different Temperatures". Journal of Dispersion Science and Technology. 36 (5): 641. doi:10.1080/01932691.2013.862170. S2CID 95868263.

[2] C. M. Starks (1971). "Phase-transfer catalysis. I. Heterogeneous reactions involving anion transfer by quaternary ammonium and phosphonium salts". J. Am. Chem. Soc. 93: 195–199. doi:10.1021/ja00730a033.

[3] S. M. Reed; J. E. Hutchison (2000). "An Environmentally Benign Synthesis of Adipic Acid". J. Chem. Educ. 77 (12): 1627–8. doi:10.1021/ed077p1627.

[4] Ameta, Suresh C; Ameta, Rakshit (2013-09-11). Green Chemistry: Fundamentals and Applications. CRC Press. ISBN 9781466578265.

[5] Jakubec, Pavol; Hawkins, Alison; Felzmann, Wolfgang; Dixon, Darren J. (2012). "Total Synthesis of Manzamine A and Related Alkaloids". Journal of the American Chemical Society . 134 (42): 17482–17485. doi:10.1021/ja308826x. PMID 23039372.

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