Situation: in a retarded fashion, I used my small beaker filled with sulfuric acid 98% instead of my beaker filled with water when I poured potassium permanganate.

It took a while to realize what I had actually produced since I never studied this compound at all, but now I'm fairly certain. I've read its very explosive.

I'm currently home and have no access to the university lab, I of course contacted the person in charge with the lab, but they might not check their emails until tomorrow.

I left it on a fume hood and I have no access to the lab due to covid until Tuesday.

I need to know, is my beaker of manganese heptoxide going to just explode?

What can I do to dispose of it? In contact with water it made a very small explosion (a drop fell on a water flask) and released manganese dioxide gas. Wikipedia says it's soluble in water, but after that I rather not.