This could be me doing something wrong, but I am stuck.

I have a research requirement to use 250 caustic solution. When I look at my unlocks the only thing that I could use it for is hydrogen chloride neutralization. However this requires access to hydrogen chloride, which I don't have...
The process to make hydrogen chloride unlocks at inorganic chemistry 2, which is below the Caustic Solution Utilization research.

Is there something I am missing here on how to consume coastic solution before inorganic chemistry 2? I attempted to dump caustic solution but this didn't count as consuming it.

Thanks for the help!

You get hydrogen chloride as a byproduct of the plastic 1 recipe. It can't be voided directly, but the neutralization recipe allows you to void it.

Thank you for the quick response, I was missing it!

I am off to make more poor decisions that I don't fully understand the ramifications of.

Thanks again!

I like the Recipe Book mod (included with the Nullius Momenti mod pack) to navigate all the different ways that you can produce or consume a particular material. Comes in useful in a complex mod like this where there are generally multiple options for doing both. There are settings so you can decide whether to limit it to only the things that you've already researched, which would be helpful in a situation like this, or all the options, which may be useful for planning ahead.