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Tetramethylammonium hydroxide, 25% w/w in methanol, Thermo Scientific Chemicals
Description
Tetramethylammonium hydroxide is used for anisotropic etching of silicon. As a basic solvent, it is used in the development of acidic photoresist in the photolithography process. It acts as phase transfer catalyst and surfactant and is used in the synthesis of ferrofluid in order to inhibit nanoparticle aggregation. It finds application in thermochemolysis, an analytical technique involving both pyrolysis and chemical derivatization of the analyte.
This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

Specifications
Specifications
Color | Colorless to Yellow |
Density | 0.865 g/mL |
Flash Point | 12°C (54°F) |
Odor | Like alcohol |
Linear Formula | (CH3)4NOH |
Quantity | 100 g |
UN Number | UN2924 |
Sensitivity | Air Sensitive |
Merck Index | 14,9224 |
Solubility Information | Miscible with water. |
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Safety and Handling
Hazard Category | H225-H300+H310-H314-H331-H335-H336-H370-H372 |
Hazard Statement | GHS H Statement H225-H300-H310-H331-H370-H372-H314 Highly flammable liquid and vapor. Fatal if swallowed. Fatal in contact with skin. Toxic if inhaled. Causes damage to organs. Causes damage to organs through prolonged or repeated exposure. Causes severe skin burns and eye damage. |
Precautionary Statement | P210-P233-P235-P240-P241-P242-P243-P260-P262-P264b-P270-P271-P280-P303+P361+P353-P304+P340-P305+P351+P338-P310-P330-P331-P363-P370+P378q-P501c |
DOTInformation | Transport Hazard Class: 3; Packing Group: II; Proper Shipping Name: FLAMMABLE LIQUIDS, CORROSIVE, N.O.S. |
EINECSNumber | 200-882-9 |
TSCA | Yes |
Recommended Storage | Ambient temperatures; Store under Nitrogen |
RUO – Research Use Only
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