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6:1 Buffered oxide etch

Preferred Short Name: 
6:1 BOE
Chemical Formula: 
34% NH4F, 7% HF, 59% H2O
Full Chemical Name (for In-Use Hazardous Chemicals card): 
34% ammonium fluoride, 7% hydrofluoric acid, 59% water

BOE is an HF based etchant that is buffered to reduce impact to resist. This particular formulation is quite concentrated in HF and should only be used if needed. 20:1 BOE is a safer alternative for instances where there is not a lot of material to etch.

Partial words okay.
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