Tetramethylammonium Hydroxide, Pentahydrate

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Spectrum Chemical Tetramethylammonium Hydroxide, Pentahydrate

Tetramethylammonium Hydroxide, Pentahydrate (TMAH)

Tetramethylammonium Hydroxide, Pentahydrate, commonly referred to as TMAH, is a versatile quaternary ammonium salt known for its critical applications in both industrial and research environments. This chemical compound excels in the anisotropic etching of silicon and serves as a reliable quaternary amine catalyst for a variety of organic synthesis processes.

Key Features:

Chemical CAS Number: 10424-65-4

Chemical Formula: C₄H₁₃NO·5H₂O

Formula Weight: F.W. 181.23

Assay: Minimum 97.0%

Halide (as Cl): Maximum 0.7%

Chemical Specifications:

Chemical Storage Info	Delquescent, air-sensitive: Keep tightly closed.
Chemical DOT Description	Tetramethylammonium hydroxide, solid.
Chemical Hazard Class	8
Chemical Packaging Group	PG II
Chemical UPS Limit	70 lb.
Additional Shipping Charge	Additional UPS-imposed hazardous material charge.