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Sigma-Aldrich

Tetraoctylammonium hydroxide solution

~20% in methanol (T)

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Synonym(s):
Tetra-N-octyl ammonium hydroxide
Linear Formula:
[CH3(CH2)7]4N(OH)
CAS Number:
Molecular Weight:
483.90
Beilstein:
7323584
MDL number:
PubChem Substance ID:
NACRES:
NA.22

form

liquid

Quality Level

concentration

~20% in methanol (T)

anion traces

bromide (Br-): ≤500 mg/kg

storage temp.

2-8°C

SMILES string

[OH-].CCCCCCCC[N+](CCCCCCCC)(CCCCCCCC)CCCCCCCC

InChI

1S/C32H68N.H2O/c1-5-9-13-17-21-25-29-33(30-26-22-18-14-10-6-2,31-27-23-19-15-11-7-3)32-28-24-20-16-12-8-4;/h5-32H2,1-4H3;1H2/q+1;/p-1

InChI key

DCFYRBLFVWYBIJ-UHFFFAOYSA-M

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Application

Tetraoctylammonium hydroxide solution can be used as:
  • A lipophilic base in the study of its effect on optical pCO2 sensors.
  • A lipophilic organic base in the preparation of nanobeads, which are used as sensors for the detection of acidic and basic gases.
  • A starting material for the preparation of ionic liquid named tetraoctylammonium 2-methyl-1-naphthoate, which is used in the extraction of 2,3-butanediol from H2O.

Other Notes

Very lipophilic phase-transfer agent; employed in a carbon dioxide optical sensor

Signal Word

Danger

Hazard Classifications

Acute Tox. 3 Dermal - Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Eye Dam. 1 - Flam. Liq. 2 - Skin Corr. 1B - STOT SE 1

Storage Class Code

3 - Flammable liquids

WGK

WGK 3

Flash Point(F)

51.8 °F - closed cup

Flash Point(C)

11 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

危险化学品

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J P Mendes et al.
Sensors (Basel, Switzerland), 19(24) (2019-12-19)
A sensing configuration for the real-time monitoring, detection, and quantification of dissolved carbon dioxide (dCO2) was developed for aquaculture and other applications in freshwater and saline water. A chemical sensing membrane, based on a colorimetric indicator, is combined with multimode
The influence of the lipophilic base in solid state optical pCO2 sensors
Schroder CR and Klimant I
Sensors and Actuators B, Chemical, 107(2), 572-579 (2005)
(Liquid+ liquid) equilibrium data for the separation of 2, 3-butanediol from aqueous streams using tetraoctyl ammonium 2-methyl-1-naphthoate
Garcia-Chavez LY, et al.
The Journal of Chemical Thermodynamics, 55, 85-91 (2012)
Precipitation as a simple and versatile method for preparation of optical nanochemosensors
Borisov SM, et al.
Talanta, 79(5), 1322-1330 (2009)
A. Mills et al.
Analytical Chemistry, 64, 1383-1383 (1992)

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