Synonyms: TMAH solution
CAS Number: 75-59-2
Formula: C4H13NO
Formula Weight: 91.15
Linear Formula: (CH3)4N(OH)
MDL No.: MFCD00008280
Density: 1.016 g/mL at 25 C
Refractive Index: n20/D 1.3806
Beilstein Registry Number: 3558708
UNSPSC Code: 12352100
Application: Tetramethylammonium hydroxide solution (25 wt.% solution in water) may be used as a base for pH adjustment to obtain hexagonal mesoporous aluminophosphate (TAP).
Application: Tetramethylammonium hydroxide is a quaternary ammonium salt generally used as an anisotropic etchant for silicon due to its high silicon etching rate.
RIDADR: UN 1835 8 / PGII
WGK Germany: 3
Flash Point(F): >212 F
Flash Point(C): >100 C
R Codes: 27/28-35-48/24
S Codes: 26-28-36/37/39-45
IOD Codes: T+
Symbol: GHS05, GHS06, GHS08, GHS09
Signal Word: Danger
Hazard Statements: H300 + H310-H314-H370-H372-H411
Precautionary statements: P260-P280-P301 + P310 + P330-P303 + P361 + P353-P304 + P340 + P310-P305 + P351 + P338-P308 + P311