Description
Description
Tetramethylammonium Hydroxide 25 wt.% in H2O 1 Liter
Synonym: TMAH solution
- CAS Number 75-59-2
- Linear Formula (CH3)4N(OH)
- Molecular Weight 91.15
- Beilstein/REAXYS Number 3558708
- MDL number MFCD00008280
- PubChem Substance Id 24859984
- NACRES NA.21
| Quality Level | 200 |
| Vapor Pressure | 17.5 mmHg (20°C) |
| concentration | 25 wt. % in H2O |
| Refractive Index | n20/D 1.3806 |
| Density | 1.016 g/mL at 25°C |
Application
Tetramethylammonium hydroxide is a quaternary ammonium salt generally used as an anisotropic etchant for silicon due to its high silicon etching rate.
Tetramethylammonium hydroxide solution (25 wt.% solution in water) may be used as a base for pH adjustment to obtain hexagonal mesoporous aluminophosphate (TAP).
Safety Information
GHS05, GHS06, GHS08, GHS09
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