Potassium Dichromate
Dichromate Etchant
Material Specific
Composition
10g K₂Cr₂O₇, 5ml H₂SO₄, 100ml H₂O
10%
Method
Immersion
Time
30s
Alternative Names
Tags
Reveals
Grain boundaries, phases
Typical Results
For copper and copper alloys. Reveals grain structure.
Color Effects
Grain boundaries dark
Compatible Materials
Incompatible Materials
Application Method
Method:immersion
Typical Time:30 seconds
Preparation Notes
Dissolve 10g K₂Cr₂O₇ in 100ml water, then add 5ml H₂SO₄ slowly.
Application Notes
Immerse sample for 30-60 seconds. Rinse with water.
Troubleshooting
CAUTION: Contains dichromate and sulfuric acid. Use with proper PPE.
Storage Notes
Store in glass bottle. Shelf life: several months.
Alternative Etchants
- Ammonium Persulfate
Similar Etchants
- Ammonium Persulfate