[size=4]Methamphetamine Frequently Asked Questions[/size]
[size=3]Coloration[/size]

From: jkenner@cello.gina.calstate.edu (Jason Kennerly)

Methamphetamine in its pure hydrochloride salt form is colorless. However, products on the market today are often not colorless. The following is a table of some common impurities and the colors associated with them. Note: There is no doubt a segment of the dealers who will add food coloring or some other such color to their drug to make it more appealing, with the philosophy that a brightly-colored product may sell better than an off color product. This is relatively uncommon however.

* RED: The product was made from pseudoephedrine, and the red coloring of the tablet was not adequately washed away (it is difficult)
* ORANGE: Ephedrine sulfate was used, and some of the sulfate was reduced to sulfur.
* PURPLE: Iodine from a phosphorus-iodine reaction was not washed out.
* GREEN: Copper (or other metallic) salts somehow made their way in to the mixture, probably due to the reaction vessel used in the manufacture.
* BROWN: Oxidized red coloring (see above), or tablating agent was present in the reduction.

Sometimes "speed" is present as waxy rocks that almost seem wet, but do not dry out properly. I am not sure what the cause of this is, but its most likely some form of oil, either formed in the reaction or left over from a very poor solvent. It may or may not be harmless depending upon what it is. This oil is often removed with acetone, but ethyl-ether would be better suited for this as it dries faster.

Pure methamphetamine HCl melts at around 170c (338f ). The crystals can be carefully chopped and mixed with sodium carbonate, and when the resulting powder is heated (and the methamphetamine HCl melts) CO2 and methamphetamine base vapor is given off. This is probably one of the more effective ways of smoking meth if you are careful, however the hydrochloride salt is often the form smoked as the base form is often an oil and is difficult to store, transport, and work with. Smoking the HCl form is OK if you don't mind a small quantity of pyrolysed drug.

d-methamphetamine is, by nature, optically active. l-methamphetamine is also optically active, but in the "opposite" direction. You can test methamphetamine HCl for optical activity with the greyish-clear plastic pieces from a pocket video game. Dissolve the methamphetamine in distilled water, then place one of the optical filters (the grayish clear things from the games LCD display) in front, and one in behind of the solution. Rotate one filter, and note the angle that is brightest and the angle that is darkest. If many "swirlies" appear, either use a different vessel to hold the solution in, or make sure the solution is well stirred. After you have done this, repeat the procedure with distilled water. A handy thing to use as a "calibration" of sorts is to extract the l-desoxyephedrine from a Vicks Inhaler (which is l-methamphetamine), and run this test on it as well.

RESULT:

* Same as water: DL-methamphetamine (or other inactive) Most likely made from P2P (methamphetamine) or DLPA (phenylalanine). The DLPA-crank may in fact only be dl-amphetamine. Might be 100% cut [read: nothing] also...

* Same as Vicks: You've been ripped off ! -or- there's so much unchanged ephedrine as to cancel the dextrorotary effects of the meth (l-ephedrine, when reduced, is dextrorotary (see explanation elsewhere)

* Opposite of vicks compared to water: DL-methamphetamine. Dextrorotary product is almost certainly methamphetamine (or extracted dexedrines?) as its is not worth the trouble to get other dextrorotary precursors or resolve dl-amphetamine...

* Worth Noting: Cathinone and Methcathinone, when dissolved in methanol, will become racemic due to the nature of the molecule (keytone). I'm not sure what other conditions cause this but I am aware that it happens easily, so methcathinone from the black market is almost definitely racemic...

The EPHEDRINE/CAT TEST
Its probably not too uncommon that some guy screws up a synthesis, but by some chance gets a partial yield. Or a dealer uses Ephedrine as cut. The problem with Ephedrine (far more so than pseudephedrine) is its beta-agonist properties - it raises blood pressure and pulse far more per "unit of high" than methamphetamine.

It is advisable to become familiar with the many ways of synthesizing methcathinone from (pseudo)ephedrine, as just such a procedure can be used on freshly produced methamphetamine to verify that the (pseudo)ephedrine was in fact reduced.

The smell of basic methcathinone has been reported to resemble that of "pistachio ice cream". Suffice to say that it is sweet, pleasant, and to a cat-head, nirvana. You should become familiar with this as well, in order to be able to know if suspected methamphetamine is in fact actually methcathinone.

The "BURN TEST" [residue test]
Methamphetamine HCl is heated on a piece of foil over a flame. It should first melt (at over 170c) then begin to fume. Often the fumes will ignite. All amphetamines will pass this test that I am aware off, including the over-the-counter l-isomer present in vicks inhalers (the *only* way to check this is to check optical activity , either by resolution or by actually measuring it with optical filters). Methcathinone HCl has a higher melting point than methamphetamine HCl (like over 190c at least) and a characteristic smell, giving it away in an instant. Residue left behind may be by-product or "cut", there's no good way to tell which... Suffice to say that if there is more than a very small amount left afterwards, there is either cut or by-products present.

The TASTE TEST [illegal without prescription snicker snicker]
Methamphetamine has a very bitter taste. Amphetamine has a bitter taste, followed by some degree of numbness. This isn't the most useful test in the world, especially considering it relies upon subjective senses too much IMHO, but it may help discern the product. Methamphetamine is also more active on serotonin that amphetamine according to net resources.

From: dmurphy3@aol.com (DMurphy3)

Sometimes 'speed' is present as waxy rocks that almost seem wet, but do not dry out properly. I am not sure what the cause of this is, but its most likely some form of oil, either formed in the reaction or left over from a very poor solvent. It may or may not be harmless depending upon what it is.

It is more than likely the "didesoxyephedrine" referred to by Emde, a product of the coupling of two radicals of the reduced ephedrine or pseudoephedrine. It appears to some extent in almost all syntheses relying on reduction and typically appears at the very end of the process of forming the HCl salt by bubbling HCl through the mixture. And no, I haven't forgotten my promise to post this paper. The scans just sucked when I tried to scan as text (5 pages magically became 10-15 of scrambled text). I am currently trying gif type scans. The *oil* may be removed, as you stated, by washing with ether. However, it will never dry out as completely one might suspect. Even drying under heavy vacuum leads to only a temporary solution. Once it is exposed to air it quickly becomes an oil again. Often this is a brown color as you stated for other by-products. As far as the rest of the post, I find it very useful and agree with it completely.

Kilde:lycaeum

Opprinnelig postet av knarkerforBRG
Jeg HAR bare mine erfaringer. Er det naturlig å ha andres erfaringer?
Få høre dine erfaringer da? Hvem er mest kvalifisert til å trekke den rette konklusjonen?

Og hvorfor jeg kaller deg silverfuck og idiot er så enkelt som at jeg synes du er en mega silverfuck(er) = sølv-føkker (gull-føkker om du drar det litt lenger) Og at du er en idiot når du quoter kilder du ikke har noe bevis for er sanne..