The short-acting ones use a JWH, the long acting ones use something else (CP-55,940 or the dimethyloctyl homolog of CP-47,497 (sometimes abbreviated "CP-47,497 (C8)".
do they have any hashish alternatives
Uh... the pure synthetic cannabinoids?
***damn its all over, that was soooo wack. It was MUCH more potent than any bud that i have ever smoked in terms of just straight tripping out. I honestly thought i was going to have a heart attack or something crazy with how fast my heart was beating. I dont know if its because i tried to much or if im allergic? crazy stuff
The stuff _is_ a mixture of 2 materials (inert herbs and a pure (well, semi-pure), highly potent drug). If that mixture was not uniform, it would be easy to get way the fuck too much of it.
If you don't smoke often, it only takes a pinch of good weed to get good and baked: this is the potency the spice mfgs are going for. If you were used to crappy weed, or had taken a break from weed (no tolerance), you would have expected to have to smoke more... JWH-018 is also particularly unforgiving; probably partly because it's somewhat selective for CB2 (peripheral), so you get more of a heart-racing effect.
I suspect, as a chemical engineer, and based on the samples of JWH-XXX and CP-55,940 that i've received and photos of these spice products, that the process they use to add the synthetic cannabinoid is solvent free.
That is, they dust the JWH/CP onto the herbs, presumably with constant mixing, and the distribution is close enough to uniform that they're comfortable selling it.
Reasoning:
Spice blends don't have buds like weed, just ground herbs, so they don't have to worry about making sure the inside/outside have similar loadings of the compound. This makes dusting possible
The samples i've received are all an incredibly incredibly fine powder, when the bulk material is at best (JWH-250) plastic-like, and at worst (CP-55,940) a sticky soft resin. JWH-018 is soft at room temperature. This is not stuff that's easy to grind! The suppliers have put some real effort into rendering it into an ultra-fine (in some cases air-floating) powder. They wouldn't do this if they didn't have to, so their main customers (spice mfgs) demand it, because they need a fine powder to dust onto the herbs and get a reasonably uniform coat.