Tetramethylammonium Hydroxide Pentahydrate (TMAH pentahydrate, CAS: 10424-65-4) is a chemical compound with distinct properties that make it valuable across several industrial applications, most notably in semiconductor manufacturing and organic silicon synthesis. As a dedicated manufacturer and supplier from China, we prioritize not only the quality and accessibility of our TMAH pentahydrate but also the understanding of its characteristics and safe handling practices. This article delves into the key properties and safety aspects relevant to B2B users.

Chemical and Physical Properties:

TMAH pentahydrate is typically a colorless crystalline powder. Its chemical formula is (CH3)4NOH·5H2O, with a molecular weight of approximately 181.23 g/mol. A significant characteristic is its strong alkaline nature, comparable to inorganic bases like potassium hydroxide. It is highly soluble in water and exhibits exothermic dissolution. A crucial property for many applications is its ability to decompose at elevated temperatures (around 130-145℃) into volatile products like methanol and trimethylamine, leaving minimal to no residue. This 'residue-free' decomposition is a major advantage in high-purity manufacturing processes, such as semiconductor wafer cleaning and etching.

Key Applications Recap:

The unique combination of properties makes TMAH pentahydrate indispensable in several critical areas:

  • Semiconductor Industry: Used as a photoresist developer and an anisotropic etchant for silicon wafers, crucial for creating intricate circuit patterns.
  • Organic Silicon Synthesis: Functions as an efficient catalyst in the production of silicone oils, resins, and rubbers, ensuring product quality and process cleanliness.
  • Chemical Analysis: Employed as a supporting electrolyte in polarography and as a reagent for specific analytical procedures requiring metal-free conditions.

Safety Considerations for Industrial Handling:

While highly effective, TMAH pentahydrate is a corrosive substance and requires careful handling. As a strong alkali, it can cause severe skin burns and eye damage. Therefore, appropriate personal protective equipment (PPE) is mandatory when working with this chemical. This typically includes chemical-resistant gloves, safety goggles or face shields, and protective clothing. Adequate ventilation in the work area is also essential to prevent inhalation of any dust or vapors.

Users should consult the Material Safety Data Sheet (MSDS) or Safety Data Sheet (SDS) provided by the manufacturer for detailed information on hazard identification, first-aid measures, fire-fighting measures, accidental release measures, handling and storage, and exposure controls. Storage should be in tightly sealed containers in a cool, dry, and well-ventilated area, away from incompatible materials such as strong acids and oxidizing agents.

Sourcing from a Trusted Manufacturer:

For businesses looking to buy Tetramethylammonium Hydroxide Pentahydrate, choosing a supplier that emphasizes quality, provides comprehensive safety information, and offers reliable supply is paramount. As a leading manufacturer in China, we are committed to upholding these standards. We provide high-purity TMAH pentahydrate that meets industry specifications, coupled with excellent customer support and competitive pricing. We encourage all users to prioritize safety by thoroughly reviewing and adhering to the provided safety guidelines.

Contact us today to learn more about our products and to secure a reliable supply of Tetramethylammonium Hydroxide Pentahydrate for your critical industrial processes.