Recently, a question on pronunciation was downvoted and then put on hold for being "primarily opinion based".
That particular question wasn't the best-constructed, lucidly-typed question in the world, but it did seem (a) related to chemistry and (b) not really that opinion based. The question was "how to pronounce this", not "what of two widely used pronunciation alternatives is the 'correct' one?"
I think there are several ways of handling pronunciation questions:
Downvoting them and marking them as off-topic immediately after they are posted with no substantive feedback to the OP.
Advising the OP that pronunciation questions sometimes are "opinion-based", so that they should be careful to phrase (or re-phrase) their question in a factual way. For example, "what is the most common pronunciation of NONOate among practicing chemists in Europe?" is a question with a factual answer, whereas, "My friend says no-no-eight and I think that's wrong...who's right?" is opinion based.
Refer the question to ELL in the hopes that they will know how chemists often pronounce arcane chemistry terms.
Right now it seems (although my data is admittedly coming from only one question) that the preferred tactics are a mixture of #1 and #3. I would be a fan of including more #2 in the mix. But what other options are there? What have I missed?