Products       Downloads       Support        News        Company       Contact                     US+Asia contact

Etchants

Acids

Acetic Acid (99.8 %)
Thinner, wetting agent and chemical buffer in various etching solutions
such as Al-etchants
 
For further information refer Acetic Acid.pdf

Hydrofluoric Acid (available in the concentrations: 1%, 10%, and 50%) 
Used for etching of SiO₂ and (together with HNO₃) - silicon. 
 
For further information refer Hydrofluoric Acid.pdf

 

Buffered Oxide Etch, BOE 7:1 (Ammoniumfluoride Etching Solution 87.5:12.5 or Buffered Hydrofluoric Acid)

Used for etching of SiO₂. Due to the higher PH value in contrast to unbuffered HF it gives better results in combination with photoresists.
The etch rate on SiO₂ is (depending on temperature and SiO₂ morphology) in the range of 70-90 nm per minute.

For further information refer: Buffered Oxide Etch.pdf

 

Nitric Acid (70 %)
Ingredient of the silicon etchant, and etching solutions for Ga-containing
III/V-semiconductors.
 
For further information refer Nitric Acid 70%.pdf

Hydrochloric Acid (37 %)
Ingredient of aqua regia and etching mixtures for various III/V-semiconductors
such as InP
 
For further information refer Hydrochloric Acid 37%.pdf

Sulphuric Acid (96 %)
Ingredient of the piranha-etch as well as etching solutions for Ga-containing
III/V-semiconductors
 
For further information refer Sulphuric Acid 96%.pdf

  

Bases

KOH Solution (44 %)
Also used for anisotropic etching of silicon.
 
For further information refer Potassium Hydroxide.pdf

  

Other Etchants

Ammonia Solution (28-30 %)
Ingredient of the RCA-1 solution
 
For further information refer Ammonia Solution 28-30%.pdf

Hydrogen Peroxide (31 %)
Ingredient of the piranha-etch, RCA-1 and RCA-2 etching solutions,
as well as etching solutions for various III/V-semiconductors
 
For further information refer Hydrogen Peroxide 30%.pdf

Sales Volumes, Shipping and Pricing
As listed in the previous section, we supply our etchants in e. g. 1.0 L, 2.5 L or 5.0 L sales units. Beside single bottles, we also offer cardboxes of 6 x 1.0 L, 6 x 2.5 L or 4 x 5.0 L.
Our typical lead time is 3-5 working days within Germany, lead times to other countries on request. On demand, in urgent cases our etchants can be shipped within 24 hours within Germany.

Please send your request to:
e-mail: sales@microchemicals.com
phone: +49 (0)731 36080 409
fax: +49 (0)731 36080 908

Thank you very much for your interest!