Sigma-Aldrich
Tetramethylammonium Hydroxide 25 wt.% in H2O, 1 Liter
- Part Number:
- MIL-331635-1L
- Lead Time:
- 2-4 weeks
- Shipping:
- FREE SHIPPING on most orders over $50*
- Quantity:
- each
- Size:
- 1 liter / 32 ounce
- Style:
- chemical
- DOT Rated:
- HazMat Transport Fee Required
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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
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
Personal Protective Equipment Faceshields, Full-face respirator (US), Gloves, Goggles, Multi-purpose combination respirator cartridge (US), Type ABEK (EN14387) respirator filter
RIDADR UN 1835 8 / PGII
WGK Germany 3
Flash Point(F) >212°F
Flash Point(C) >100°C
Documents
Warnings
Note: These chemicals are for research & laboratory use only. Your order will not be processed if you do not work for, and ship to, a registered laboratory or research facility. Not for topical applications. An official Declaration of Use form may be required.
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WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer and reproductive harm. Prop 65 Warning
Please note: This product is not returnable.
General description Cyclohexane undergoes oxidation in the presence of various oxidants such as hydrogen peroxide, tert-butyl hydroperoxide and molecular oxygen.[2]
Application Cyclohexane has been used to prepare a 1.3M solution of sec-butyllithium.[3] It may be used as a starting Reagent for the synthesis of adipic acid[1] and ε-caprolactam.[1]