328251

Tetramethylammoniumhydroxid -Lösung

10 wt. % in H₂O

• Synonym(e): N,N,N-trimethyl-methanaminium hydroxide, TMAH, TMAOH
• Lineare Formel: (CH₃)₄N(OH)
• CAS-Nummer: 75-59-2
• Molekulargewicht: 91.15
• Beilstein: 3558708
• MDL-Nummer: MFCD00008280
• UNSPSC-Code: 12352100
• PubChem Substanz-ID: 24859725
• NACRES: NA.21

Eigenschaften

• Dampfdruck: 17.5 mmHg ( 20 °C)
• Qualitätsniveau: 100
• Konzentration: 10 wt. % in H₂O
• Brechungsindex: n20/D 1.3521
• Dichte: 1.006 g/mL at 25 °C
• Funktionelle Gruppe: amine
• SMILES String: [OH-].C[N+](C)(C)C
• InChI: 1S/C4H12N.H2O/c1-5(2,3)4;/h1-4H3;1H2/q+1;/p-1
• InChIKey: WGTYBPLFGIVFAS-UHFFFAOYSA-M

Beschreibung

Allgemeine Beschreibung

Tetramethylammonium hydroxide (TMAH), is a commercially available quaternary ammonium base with significantly higher basicity than ammonium hydroxide.

Anwendung

Tetramethylammonium hydroxide solution (10 wt. % in H₂O) can be used as:      

• A reactant to synthesize epoxy-polyhedral oligomeric silsesquioxanes (EPOSS) via sol-gel method using 2-(3,4-epoxycyclohexyl)ethyltrimethoxysilane (ECTMS) in IPA.     
• An ionic liquid to modify SnO₂ nanocrystals, which are applicable as an efficient electron transport layer in perovskite solar cells.

TMAH can also be used as an anisotropic etchant for silicon due to its high silicon etching rate. The main advantage of using TMAH is that it causes no danger to electrical circuits due to the absence of alkali ions.

Sicherheitshinweise

• Piktogramme: GHS06,GHS08,GHS05
• Signalwort: Danger
• H-Sätze: H301,H310,H314,H370,H372,H412
• P-Sätze: P260 - P273 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• Gefahreneinstufungen: Acute Tox. 1 Dermal - Acute Tox. 3 Oral - Aquatic Chronic 3 - Eye Dam. 1 - Skin Corr. 1B - STOT RE 1 Dermal - STOT SE 1
• Zielorgane: Central nervous system, Liver,thymus
• Lagerklassenschlüssel: 6.1B - Non-combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials
• WGK: WGK 3
• Flammpunkt (°F): Not applicable
• Flammpunkt (°C): Not applicable
• Persönliche Schutzausrüstung: Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter