TETRAMETHYLAMMONIUM HYDROXIDE 10 WT. % SOLUTION IN WATER (C005B-077216)

General description

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

Application

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.

Molecular Weight: 91.15. Empirical Formula: C₄H₁₃NO. linearFormula: (CH₃)₄N(OH). vapor pressure: 17.5 mmHg ( 20 °C). Quality Level: 100. concentration: 10 . wt. % in H₂O. refractive index: n20/D 1.3521. density: 1.006 . g/mL . at 25 . °C. SMILES string: [OH-].C[N+](C)(C)C. InChI: 1S/C4H12N.H2O/c1-5(2,3)4. /h1-4H3. 1H2/q+1. /p-1. InChI key: WGTYBPLFGIVFAS-UHFFFAOYSA-M. Pictograms: GHS05,GHS06,GHS08,GHS05,GHS06,GHS08. Signal Word: Danger-Danger. Hazard Statements: H301 + H311 - H314 - H370 - H372 - H412 - H301 + H311 - H314 - H370 - H372 - H412. Precautionary Statements: P260 - P273 - P280 - P260 - P273 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338. Hazard Classifications: Acute Tox. 3 Dermal - Acute Tox. 3 Oral - Aquatic Chronic 3 - Eye Dam. 1 - Skin Corr. 1B - STOT RE 1 Dermal - STOT SE 1. Target Organs: Central nervous system. Storage Class Code: 6.1D - Non-combustible, acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects. WGK: WGK 1. Flash Point(F): Not applicable. Flash Point(C): Not applicable. Personal Protective Equipment: Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter.