• • • Mixtures/Blends

Ultra Pure Chemicals

Mixtures/Blends

• Indium Tin Oxide (ITO) Etchants
• Nano-Strip
• Aluminium Etchants
• Buffered Oxide Etchants (BOE)
• Chromium Etchants
• Copper Plating
• Copper Etch

• Gold Etchants (Nitric/HCl)
• Gold Etchants (KI/l based)
• Poly Silicon Etchants
• Silicon Etchants
• Etchants for Titanium
• Etchants for Tantalum

Gold Etchants (Nitric/HCl)

Gold is oxidised by reaction with Nitric Acid to form Gold Oxide (Au2O3). The oxide subsequently reacts with Hydrochloric Acid to form the soluble Gold Chloride (AuCl3) which dissolves into solution. These mixtures of Nitric and Hydrochloric Acids, also known as Aqua Regia, will also attack platinum.

Market Segments:

• Semiconductor
• Mems & Nanotechnology
• Plastic Electronics

Functions:

Etchant