This stuff would go off immediately if you touched it.
I used to make it with my friends with household ammonia and medical iodine. We mixed them and then filtered through paper. Then this brown powder would explode after it dried if we touched it just lightly.
It's crazy that something so unstable can even exist at RTP. Like it's interesting how it threads the line between so-unstable-you-can't-make-me, and stable-enough-to-make-but-decompose-under-a-stern-glance. Universe has a sense of fun, NI3 is tuned specifically for existence as a prank substance.
I used to make it with my friends with household ammonia and medical iodine. We mixed them and then filtered through paper. Then this brown powder would explode after it dried if we touched it just lightly.