| Identification | More | [Name]
Tetraethylammonium hydroxide | [CAS]
77-98-5 | [Synonyms]
IPC-TEA-OH
TEA HYDROXIDE
TETRAETHYLAMMONIUM HYDROXIDE
ai3-24479
Ethanaminium,N,N,N-triethyl-,hydroxide
Ethanaminum,N,N,N-triethyl-,hydroxide
n,n,n-triethyl-ethanaminiuhydroxide
tetraethylammonioumhydroxide(aqueous)
tetraethyl-ammoniuhydroxide
tetraethylammoniumhydroxide,solution
Tetraethylammoniumhydroxides
Tetraethylamminonium hydroxide
TETRAETHYLAMMONIUM HYDROXIDE 20 WT. % &
TETRAETHYLAMMONIUM HYDROXIDE, 35 WT. % S OLUTION IN WATER
TETRAETHYLAMMONIUM HYDROXIDE SOLUTION,~1 .0 M IN WATER
TETRAETHYLAMMONIUM HYDROXIDE, 20 WT. % S OLUTION IN WATER
TETRAETHYLAMMONIUM HYDROXIDE SOLUTION,~40% IN WATER
TETRAETHYLAMMONIUM HYDROXIDE CONC., FOR IPC, PGE W. 6 VIALS
TETRAETHYLAMMONIUM HYDROXIDE SOLUTION 20 %
TETRAETHYLAMMONIUM HYDROXIDE SOLUTION,~20% IN WATER | [EINECS(EC#)]
201-073-3 | [Molecular Formula]
C8H21NO | [MDL Number]
MFCD00009024 | [Molecular Weight]
147.26 | [MOL File]
77-98-5.mol |
| Chemical Properties | Back Directory | [Appearance]
colourless liquid | [Melting point ]
-98C | [Boiling point ]
110 °C
| [density ]
1.023 g/mL at 25 °C
| [refractive index ]
n20/D 1.422
| [Fp ]
11 °C
| [storage temp. ]
2-8°C
| [form ]
Solution | [color ]
colorless to yellow
| [PH]
>13 (H2O, 20°C) | [Stability:]
Stable, but absorbs carbon dioxide from the air | [Water Solubility ]
SOLUBLE | [Sensitive ]
Air Sensitive | [Merck ]
14,9201 | [BRN ]
3912961 | [InChI]
1S/C8H20N.H2O/c1-5-9(6-2,7-3)8-4;/h5-8H2,1-4H3;1H2/q+1;/p-1 | [InChIKey]
LRGJRHZIDJQFCL-UHFFFAOYSA-M | [SMILES]
[OH-].CC[N+](CC)(CC)CC | [Uses]
Alkaline catalyst, solvent for certain types of
dyes, metal-plating solutions. | [CAS DataBase Reference]
77-98-5(CAS DataBase Reference) | [EPA Substance Registry System]
77-98-5(EPA Substance) |
| Questions And Answer | Back Directory | [Preparation]
The principle of preparing tetraethylammonium hydroxide by electrolysis is as follows: Under the influence of an electric field, chloride ions in the tetraethylammonium chloride aqueous solution in the anode chamber of the electrolytic cell migrate towards the anode until they discharge and chlorine gas is released. Simultaneously, due to the selective permeability of the ion-exchange membrane, chloride ions cannot diffuse through the membrane; only tetraethylammonium ions can selectively permeate into the cathode chamber and accumulate there. In the cathode chamber, water molecules decompose into hydrogen and hydroxide ions. The latter combine with the tetraethylammonium ions that have migrated from the anode chamber to form tetraethylammonium hydroxide. As the charge increases, the concentration of tetraethylammonium hydroxide continuously increases, eventually reaching the desired crude product concentration. The anodic electrochemical reaction is: (C₂H₅)₄NCl → (C₂H₅)₄N⁺ + Cl⁻ 2Cl⁻ — 2e⁻ → Cl₂↑ The cathodic electrochemical reaction is: H₂O → H⁺ + OH⁻ (C₂H₅)₄⁺ + OH⁻ → (C₂H₅)₄OH 2H⁺ + 2e⁻ → H₂↑ The overall reaction is: 2(C₂H₅)₄NCl + 2H₂O → 2(C₂H₅)₄OH + H₂↑ + Cl₂↑ The hydrogen gas produced in the electrolysis process is released into the atmosphere, and the generated chlorine gas is absorbed by an alkaline solution to produce sodium hypochlorite, which is the main raw material for bleaching powder. Therefore, this method for preparing tetraethylammonium hydroxide is simple, has high purity, and causes no environmental pollution. |
| Safety Data | Back Directory | [Symbol(GHS) ]
GHS05 | [Signal word ]
Danger | [Hazard statements ]
H314 | [Precautionary statements ]
P280-P301+P330+P331-P303+P361+P353-P304+P340+P310-P305+P351+P338-P363 | [Hazard Codes ]
C,N,T,F | [Risk Statements ]
R34:Causes burns.
R51:Toxic to aquatic organisms.
R39/23/24/25:Toxic: danger of very serious irreversible effects through inhalation, in contact with skin and if swallowed .
R23/24/25:Toxic by inhalation, in contact with skin and if swallowed .
R11:Highly Flammable. | [Safety Statements ]
S7:Keep container tightly closed .
S16:Keep away from sources of ignition-No smoking .
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S61:Avoid release to the environment. Refer to special instructions safety data sheet . | [RIDADR ]
UN 3286 3/PG 2
| [WGK Germany ]
3
| [RTECS ]
KH3150000
| [F ]
9-34 | [TSCA ]
Yes | [REACH Registrations]
Active | [HazardClass ]
8 | [PackingGroup ]
II | [HS Code ]
29239000 | [Storage Class]
3 - Flammable liquids | [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 |
| Hazard Information | Back Directory | [Chemical Properties]
colourless liquid | [General Description]
The product is 20wt.% solution of tetraethylammonium hydroxide (TEA hydroxide, TENOH) in H2O. TEA hydroxide is a quaternary ammonium hydroxide (QAH). It participates in the synthesis of zeolite beta. TENOH peptized titania aqueous sols have been employed in the preparation of nanocrystalline anatase films. | [Hazard]
Strong irritant to skin and tissue. |
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