I've been thinking about this one, but not in the pseudo. Use it to make HI ahead of time. I have been poking around and bookmarking posts like crazy, plus reading over argox's method for HI using phosphoric and KI.
For the sodium sulfite route, I think you'd still want to use
argox's trap setup (with custom vacuum adapters)
(
https://www.thevespiary.org/rhodium/Rhodium/chemistry/hydriodic.argox.html) to generate aqueous HI. Original post and thread is
Post 271993
(Argox: "Hydriodic Acid--Step by Step Write-Up", Stimulants).
Anyone care to help out with any dangers or byproducts we should be aware of?
Oh, and while you're at it, you should also consider formic acid.
Post 497130 (missing)
(elfspice: "substitute HCOOH for P(red)", Stimulants)