downwardsfromzero wrote:There's no reason it won't be chemically nearly as stable as fumarate crystals themselves. Mould or bacteria might be a problem after 3 days so I would suggest that sterility of the mixture and the container should be a priority if you're planning on storing an acetic acid-free formula that way for anything more than a week. Otherwise, keeping it in a freezer will extend its shelf-life.
In the original COCO tek, the acetic acid helps act as a preservative. It does more than merely neutralizing the DMT freebase. 1% of acetic acid in the aqueous phase will effectively prevent mould growth. I can confirm this experientially in the case of rue tea (without coco cream, of course).
Thank you for your answer.
SWIM's goal is roughly a month shelf life in a fridge using a 5ml nasal spray container. Is this possible if SWIM uses freebase converted to acetate?
SWIM has little to no experience in chemistry... But would that work if SWIM adds a 'touch of vinegar' to the dmt fumarate solution? Will he achieve the 1% acetic acid level in the dmt fumarate solution to preserve it better?
SWIM is a littlebit affraid of using freebase as he tried a line before and it burned like hell... SWIM also read a few posts about this coco nasal method with freebase and this is why he decided to use fumarate (prior your answer

).
SWIM uses heptane and makes clean, white dmt
SWIM has acces to empty _sterile_ nasal spray bottles
SWIM has a DIY glovebox (was used for shrooms) and he is experienced keeping mold and bacteria away from his containers in general

SWIM would be really happy for a month shelf life in a normal fridge

so therefore SWIM could go ahead and travel while lockdown is still in place..
EDIT : What if instead normal water SWIM adds fully saturated saline solution for preservation ? (SWIM just read thats what's used normally for preserving nasal sprays). Does salt interfere with the dmt fumarate (or freebase) ? Or maybe both ? So fumarate (or freebase) + few drops of 20% vinegar (higher % as SWIM would like to make a less watery spray) + saline solution instead pure water ? Maybe using distilled water for the saline solution for even better sterility?