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VWR Tetramethylammonium hydroxide 25% in aqueous solution, GPR RECTAPUR®, 100 mL
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Specifications:
| Application | Analytical Chemistry | ||
| Storage Temperature | Ambient | ||
| Product Type | Laboratory Chemical | Forms | Liquid |
| Product Brand | VWR | ||
| Product Grade | Analytical grade | Formula | C₄H₁₃NO |
VWR® Tetramethylammonium Hydroxide (TMAH), 25% aqueous solution, is supplied under the GPR RECTAPUR® grade, offering high-quality purity for analytical and industrial applications. TMAH is a strong quaternary ammonium base widely used as an etching agent in the semiconductor industry, an organic synthesis reagent, and a developer in photoresist processing.
This solution contains 24–26% TMAH, with tight impurity limits (halides ≤0.2%, ignition residue ≤0.1%), ensuring reproducibility in demanding analytical, electronic, and chemical processes.
Key Features
- High Purity Solution: Assay 24–26% in water.
- GPR RECTAPUR® Grade: Ensures reliable analytical and process performance.
- Strong Base: Quaternary ammonium hydroxide with high reactivity.
- Controlled Impurities: Low halide and residue levels.
- Ready-to-Use Solution: Supplied in stable aqueous form.
Applications
- Semiconductor Industry: Widely used in anisotropic silicon etching.
- Microelectronics: Photoresist developer in lithography processes.
- Analytical Chemistry: Strong base for synthesis and titration reactions.
- Organic Synthesis: Reagent and catalyst in quaternary ammonium salt chemistry.
- Research & Development: Etching and cleaning agent in advanced material science.
Specifications
| Property | Details |
|---|---|
| Assay (Concentration) | 24–26% |
| CAS Number | 75-59-2 |
| Formula | C₄H₁₃NO |
| Molecular Weight | 91.15 g/mol |
| Appearance | Clear aqueous solution |
| Density (20 °C) | 1.02 g/cm³ |
| Density (25 °C) | 1.016 g/cm³ |
| Boiling Point | 110 °C |
| Halides (as Cl⁻) | ≤0.2% |
| Ignition Residue (SO₄²⁻) | ≤0.1% |
| Storage Temperature | Ambient |
| UN / ADR Classification | UN 1835 / Class 8, PG II |
| Hazard Classification | Toxic, Corrosive |
Packaging & Ordering Information
| Catalog Number | Description | Pack Size | Container |
|---|---|---|---|
| 191773B | VWR® Tetramethylammonium Hydroxide 25% in Aqueous Solution, GPR RECTAPUR® | 100 mL | Glass bottle |
Safety Information
- Hazards: Toxic and corrosive. Harmful if swallowed, inhaled, or absorbed through skin. Causes severe skin burns and eye damage.
- Precautions: Handle with care under fume hood. Use protective gloves, goggles, and face shield. Store in tightly closed glass bottles at ambient conditions, away from acids and incompatible materials.
VWR® Tetramethylammonium Hydroxide 25% in Aqueous Solution is a high-purity, quaternary ammonium base, essential in semiconductor etching, photoresist development, and advanced organic synthesis. Its GPR RECTAPUR® quality, controlled impurities, and consistency make it an ideal choice for electronics manufacturing, analytical labs, and research applications.