It is required to prepare furacilin solution (1:5000). What is the dissolution peculiarity of furacilin?

Answer options

1. It dissolves in the purified water after the trituration
2. It dissolves in the filtered purified water
3. It dissolves in a minimal amount of ethyl alcohol
4. It dissolves in the boiling water purified in the presence of sodium chloride
5. It dissolves in the cold purified water