Procedure
- Dissolve 10 g HgCl2 in 100 ml warm (not boiling) distilled water;
- Leave to cool (mercuric chloride crystals deposit);
- Filter off the clear supernatant;
- Store in a sealed glass bottle until use.
Composition
- Saturated mercuric chloride solution 2 volumes
- 95% ethanol 1 volume
- Mix well.
- Immediately before use, add 5.0 ml glacial acetic acid to 95 ml of stock solution
- Mix well.