Yeah, that sounds just like propylene glycol to me. Easily available on popular auction sites, and places that sell e-cig liquid. I was able to get some from my local e-cig shop, with a dropper bottle chucked in, when I needed it that day. A very decent solvent, which tastes alright. It's used in pretty much all medicinal syrups, and even injectable ampoules.
I never heard of any aMT fatalities, until fairly recently. It's an incredibly useful antidepressant, in lower doses (5-10mg), and a fun/trippy stimulant, in higher doses. Whoever pressed those pills must have crammed them full of the stuff. Taken responsibly, it's pretty benign, and usually has an afterglow lasting for days. I suppose there's no way of knowing what sort of quality the stuff being sold currently is. It's a shame, because it can be lovely stuff. Like a speedy/trippy MDMA. Not had the stuff for years, but would certainly like to do it again, and introduce a few mates to it.