Phosphides, sulfides (U)-US (toxic)

Material: Phosphides, sulfides (U)
Type: Micro
Method: Chemical etching
Etchant (electrolyte): 10 ml hydrogen peroxide (30%), 1 ml sulfuric acid.
Procedure: Few seconds to minutes.
Note: US (toxic).
Source: Fred Hargreaves (Ret.), Personal Etchants Database 1960-1990, Analytical Services Bookham Technology, Caswell, Towcester, Northamptonshire NN8EQ, UK.















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