OK, SWIM' friend says these:
"Re to the the naphthas in the page you showed, it is better to check their MSDS (Material Safety Data Sheets) and copy their information here. What you are looking for is the "UN" number, e.g. UN1268 as well as the C.A.S number, e.g. CAS 8002-05-9, or CAS 8030-31-7 etc.
One can use this information to find which is the best suited naphtha. Ideally the best naphtha is the one that contains:
1) aliphatic hydrocarbons (e.g. pentane, hexane, heptane, octane nonane, decane) and as little as possible of aromatic hydrocarbons (e.g. benzene, toluene, xylene). This makes the naphtha good for freeze-precipitation and more selective for dmt.
2) primarily
light aliphatic hydrocarbons, like pentane, hexane, heptane, octane and
less or none of heavier aliphatic hydrocarbons (like decane, entecane, dodecane, decatriane) etc. Light hydrocarbons evaporate faster, heavier hydrocarbons may take ages (literally) to evaporate.
As far as the NaOH is concerned, SWIM cannot believe that you cannot find it in lithuanian shops. Ask at some hardware stores; Plumbers use it for some hardcore pipe unclogging. Ordering from the internet (esp. from another country) does have some risks. If you do so, get them to post it at a friend's address"
This is what SWIM's friend said once.
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