sulphuric acid

Hi Randy, This is a repost from another forum after a suggestion it would be better here, can you help please? I am cleaning up some old dry rocks and I was going to use muriatic acid. The slight problem I have is that I don't live in the US and I can't find any, the closest I have got was...

I am cleaning up some old dry rocks and I was going to use muriatic acid. The slight problem I have is that I don't live in the US and I can't find any, the closest I have got was hydrochloric acid in a 25g drum.....a little much I feel ;) I have however found Ph Redux that says it is sulphuric...