You should try asking over in sci.chem over one Usenet. Note that Usenet group postings are not typically catalogued along with the rest of the web.

About 95% of the time when I have a question, I find that someone has (and usually a number of someones have) asked the question previously, with plenty of correct responses and useful pointers. Only very seldom do I have to ask a question myself. When I do, I get a useful response perhaps half the time. (Sometimes the question is so arcane, I'm not surprised I get no response.)
Almost all of my queries are programming related, so there are going to be a lot of resources for that.

A preliminary search of the group sci.* groups with the keywords mercurometric and chlorides produced no results, so unless you have other words you could search on, it's not likely your question is already answered. However, you'll probably find knowledgeable people in there who could point you in the right direction.

k