Safety (MSDS) data for nicotine
CAS No: 54-11-5



http://pharmacycode.com/msds/Nikotin

Bilo koji oksidans, a pogotovo slobodni O2 oksidirati će nikotin samo im treba malo vremena .
Kod parenja malo će se nikotina oksidirati jer se radi o kratkom vremenu. Interesantno da će se parenjem i inaće malo izgubiti na neki drugi način. Napr. test (901, PG, 70mg nic, robot inhaler) je u dosta dobro kontroliranim uvjetima pokazao da se kondenziranjem nastale pare prikupi 92% početnog nikotina. Ostalo je oksidiralo, raspalo se na grijaču ili što već. http://www.e-cigarette-forum.com/forum/ ... aping.html
Osim što pokazuje da nema velikog uništavanja nic-a dobra je vijest da se ne raspada u štetnije spojeve (92% nic, ostalo vjerovatno cotinin i nic oksid)

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"People smoke for nicotine but they die from the tar." (Michael Russell)

Ako se nekome da zafrkavati sa izračunom nikotina evo i postupka
od materijala treba samo BTB (indikator) i 0.12N Sulfatna kis.
mislim da se oboje bez problema može nabaviti.
Nek vas ne plaši Sumporna kiselina je se radi o ispod 1% koncentracije (preslabo i za šalatu radit )
http://www.bob-r.com/ENI/Small%20Scale%20HCl.pdf

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"People smoke for nicotine but they die from the tar." (Michael Russell)

Thanks for the enquiry.
Just to clarify, nicotine doesn't have a shelf life as is normally used in
the food industry.
It won't spoil, and be unsafe to consume like a food product.
In the chemical industry, the "expiration date", or retest date, is usually
based on prior stability testing to indicate when a chemical, or solution
should be retested to assure it still meets the original specs for usage.

Nicotine will oxidize in reaction to oxygen, light, heat, and moisture to
form nicotine oxides.
These oxides are strongly colored, and are responsible for the yellow,
brown, and sometimes pink or red shades that you may see develop in nicotine
solutions over time.
In addition to the color change, the solution may develop a stronger
characteristic nicotine aroma, and taste which might interfere with very
light, or delicate flavorings.
When this happens it doesn't mean that a solution is now unusable, but
depending on individual tastes, you may find a heavily oxidized solution
only suitable for use with tobaccos (some find this even preferable), or
other strong flavorings.

While you cannot completely prevent the oxidation process once the pure
extract has been opened and mixed, there are a few storage procedures you
can follow to reduce exposure, and keep the solution as close to it's
original state for the longest period of time as possible.

Nicotine solutions should be stored in amber glass containers with a tight
fitting cap to prevent exposure to oxygen, light, and moisture.
If a nicotine solution is going to be used immediately over the course of a
few weeks, leaving it in the plastic shipping container is acceptable, but
if longer storage is needed, the solution should be transferred into glass
containers due to their superior oxygen barrier, and non-reactive
properties.
*** NOTE: Always properly label any rebottled solutions and chemicals! ***

To avoid repeated exposure of the entire solution to oxygen and moisture
during use, we recommend that the solution be divided up among several
smaller amber glass bottles instead of stored in one large bottle.
This way, you can take one small bottle from storage for short term use
while leaving the other bottles sealed, and untouched until needed at a
later date.
Store the filled amber glass bottles in a freezer to help slow down
molecular movement, and chemical reactions in the solution.
When filling the amber glass bottles, leave a minimal air space at the top
of the neck (approximately 1/4") for possible heat expansion when the bottle
is removed from cold storage, and allowed to warm to room temperature again.

Storage and handling recommendations are the same for both propylene glycol,
and glycerin based nicotine solutions.

On a side note, during our stability testing we've consistently witnessed
faster oxidation of VG based solutions in comparison to PG based solutions.
Whether this is due to a difference of hygroscopic properties, retention of
microbubbles during mixing, or other factors is unknown, but I thought I'd
include that for your own interest.

Thanks again for the good questions, and if we can be of any further help
just let me know.

Best regards,

J. M.
Wizard Labs

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"People smoke for nicotine but they die from the tar." (Michael Russell)

hebiga moram citirat sam sebe
Uputa veli 6 kapi Bromotimola. Dovoljne su dvije kapi. Tek za conc. veće od 30mg nica 4kapi BTB-a

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"People smoke for nicotine but they die from the tar." (Michael Russell)

Test skladištenja tekućine
http://www.madvapes.com/blog/nicotine-c ... over-time/

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"People smoke for nicotine but they die from the tar." (Michael Russell)

Fosna

jel smijem staviti sliku mog (sigurnog) spremišta

Update: VG baza sa 18 mg/ml nikotina,

Kada sam je zamješao prvo sam je ostavio da odstoji par dana, a zatim sam je obrađivao tako da sam ju prozračivao pumpicom za zrak 3 puta po 8 sati, rezultat koji sam dobi je jako dobar, bistra i homogena tekućina sa blagim mirisom koji se jedva osjeti kada se otvori posuda sa bazom.

Ova metoda mi se jako sviđa jer prilikom obrade zrak koji prolazi kroz bazu je miješa, a ujedno i vrši odzračivanje baze tj. izvlači sve strane mirise koji se u njoj nalaze tako da se dobije izuzetno dobro promiješana baza koja je ujedno i jako dobro "provjetrena".

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