Is there any non toxic liquid in which 4-ho-met dissolves and doesn't degrade while being stored in it?
Unfortunately, afaik, the only way to do this would be with dry etoh/meoh, the latter obviously being quite toxic.
And even then, shulgin said, at least regarding psilocin, the less water you have in the alcohol, the less soluble the psilocin/4-ho's (salts) will be. Dry etoh/meoh is a quite poor polar solvent for 4-sub trypts. Then you consider degradation of the 4-ho/aco's occurs by and large from phenolic oxidation when stored in aqueous solutions, and the possibility's for storage in polar solvents starts too seem like a non-viable option. Since water is necessary to get a workable degree of solubility, but causes degradation the quickest.
If your trying to figure out how to accurately dose out 4-subs, by taking a large mg amount and making a solution and dosing volumetrically as needed, i think thats not practical. Even if you stick it in the freezer and wrap it in foil.
Honey/chocolate, on the other hand, might work. You just need to homogenize the mixture (its not solublizing, just mixing) very well, to avoid inaccurate doses. Make individual doses all at once, and store them in the freezer with o2/h2o desiccants in a lightproof container. Thats how i get mushrooms from an associate at least, via chocolate form. We both agree they last longer when stored this way (powdered mushrooms, mixed with cooling liquid chocolate and hardened into standardized doses).
I think, however, you might be able to get away with it another way. Get high proof alcohol, but not too dry (id say 80-90% etoh), dissolve the metocin in it at its highest saturation without resorting to heating the solvent, then working quickly to avoid degradation, evaporate doses onto an edible medium, paper is off the table as you'd need a big ass blotter taking into account solubulity mg/ml, and potency, at least relative to how lsd blotter is made. Then take your edible doses after drying quickly, without heat in a dry/cool/dark as possible environment, and store them in a airtight container with silica/naso4/mgso4/etc as a moisture dessicant to keep the humidity as low as possible, and use oxygen food preserver desiccants, or atmospheric replacement with wine preserver n2 gas/inert argon or noble gas/etc, to prevent oxidation from gaseous oxygen in the containers volume. Wrap it in foil and store in the freezer.
TLDR version- I don't think solution storage is possible without h20, which causes degradation quickly, as thats what makes 4-ho/aco's soluble in other polar solvents like alcohols, but perhaps making individual dosage units using a high proof alcohol with enough water to make it soluble, finding an edible medium to dose it upon, and drying in an environment that is low in heat/02/h20 (humidity)/light quickly, and storing in an lightproof airtight container with oxygen and h20 desiccants in the freezer is your best bet for accurate volumetrically solution dosing. Keeping it in solution, which is only possible by using water afaik, quickly leads to degradation.
Or you could take the metocin, and mix it in honey/cooling liquid chocolate, and pour out standardized doses. With honey you could use plastic vials for storage of individual doses. Just be sure to homogenize (Google the term if its not in your linguistic vocabulary) the mixture very well, as its not being solubulized, to prevent patches of higher/lower potency due to inadequate mixing. And always store them in an environment with as little heat/o2/h20/light as possible.
They're a bit tricky to work with, if you like to dose volumetrically out of a solution. Since the only thing they seem to be soluble in, water, is what is going to cause them to degrade quickly. Thus either the homogenization into an insoluble medium (honey/chocolate), or laying loses on a medium, using a semi dry alcohol and working as quickly as possible are the only options i see here.
Just don't go passing off those rc trypt chocolates as mushroom chocolates. Taste, difference in affects, and the morality of doing so prevent all but the most fucked up people from trying that kind of stupid shit. But for HR/accurate dosing purposes, i think it should be considered/information out there, so long as its for personal use, and not for distribution as fake mushroom chocolates.