A third choice is also possible for

A third choice is also possible for use as a crystallization solvent.
This is mineral spirits available from hardware stores in the paint
department. Mineral spirits are roughly equivalent to the petroleum ether
or ligroin commonly seen in chem labs. Those brands which boast of low odor
are the best choice. Before using this material it is best to fractionally
distill it, and collect the lowest boiling point half of the product. This
speeds crystal drying. Since the choice of mineral spirits eliminates ether
from the supply loop, the clandestine operator may well go this route.
Toluene is also an acceptable solvent.

With the solvent of his choice, the chemist rinses the insides of the
condenser, vacuum adapter and 250 ml flask to get out the methamphetamine
clinging to the glass. This rinse is poured in with the product. Solvent is
added to each of the Erlenmeyer flasks until the volume of liquid is 300
ml. They are mixed by swirling.

A source of anhydrous hydrogen chloride gas is now needed. The chemist
will generate his own. The glassware is set up as in Figure 10. He will
have to bend another piece of glass tubing to the shape shown. It should
start out about 18 inches long. One end of it should be pushed through a
one-hole stopper. A 125 ml sep funnel is the best size. The stoppers and
joints must be tight, since pressure must develop inside this flask to
force the hydrogen chloride gas out through the tubing as it is generated.



Into the 1000 ml, three-necked flask is placed 200 grams of table salt.
Then 35% concentrated hydrochloric acid is added to this flask until it
reaches the level shown in the figure. The hydrochloric acid must be of
laboratory grade.

Some concentrated sulfuric acid (99-98%) is put into the sep funnel and
the spigot turned so that 1 ml of concentrated sulfuric acid flows into the
flask. It dehydrates the hydrochloric acid and produces hydrogen chloride
gas. This gas is then forced by pressure through the glass tubing.

One of the Erlenmeyer flasks containing methamphetamine in solvent is
placed so that the glass tubing extends into the methamphetamine, almost
reaching the bottom of the flask. Dripping in more sulfuric acid as needed
keeps the flow of gas going to the methamphetamine. If the flow of gas is
not maintained, the methamphetamine may solidify inside the glass tubing,
plugging it up.

Within a minute of bubbling, white crystals begin to appear in the
solution. More and more of them appear as the process continues. It is an
awe-inspiring sight. In a few minutes, the solution becomes as thick as
watery oatmeal.

It is now time to filter out the crystals, which is a two-man job. The
flask with the crystals in it is removed from the HC1 source and
temporarily set aside. The three-necked flask is swirled a little to spread
around the sulfuric acid and then the other Erlenmeyer flask is subjected
to a bubbling with HC1. While this flask is being buWled, the crystals
already in the other flask are filtered out.

The filtering flask and Buchner funnel are set up as shown in Figure
11. The drain stem of the Buchner funnel extends all the way through the
rubber stopper, because methamphetamine has a nasty tendency to dissolve
rubber stoppers. This would color the product black. A piece of filter
paper covers the flat bottom of the Buchner funnel. The vacuum is turned on
and the hose attached to the vacuum nipple. Then the crystals are poured
into the Buchner funnel. The solvent and the uncrystallized methamphetamine
pass through the filter paper and the crystals stay in the Buchner funnel
as a solid cake. About 15 ml of solvent is poured into the Erlenmeyer
flask. The top of the flask is covered with a palm and it is shaken to
suspend the crystals left clinging to the sides. This is also poured into
the Buchner funnel. Finally, another 15 ml of solvent is poured over the
top of the filter cake.

Now the vacuum hose is disconnected and the Buchner funnel, stopper and
all, is pulled from the filtering flask. All of the filtered solvent is
poured back into the Erlenmeyer flask it came from. It is returned to the
HC1 source for more bubbling. The Buchner funnel is put back into the top
of the filtering flask. It still contains the filter cake of
methamphetamine crystals. It will now be dried out a little bit. The vacuum
is turned back on, the vacuum hose is attached to the filtering flask, and
the top of the Buchner funnel is covered with the palm or a section of
latex rubber glove. The vacuum builds and removes most of the solvent from
the filter cake. This takes about 60 seconds. The filter cake can now be
dumped out onto a glass or China plate (not plastic) by tipping the Buchner
funnel upside-down and tapping it gently on the plate.



And so, the filtering process continues, one flask being filtered while
the other one is being bubbled with HC1. Solvent is added to the Erlenmeyer
flask to keep their v

Hasil (Melayu) 1:

A third choice is also possible for use as a crystallization solvent. This is mineral spirits available from hardware stores in the paint department. Mineral spirits are roughly equivalent to the petroleum ether or ligroin commonly seen in chem labs. Those brands which boast of low odor are the best choice. Before using this material it is best to fractionally distill it, and collect the lowest boiling point half of the product. This speeds crystal drying. Since the choice of mineral spirits eliminates ether from the supply loop, the clandestine operator may well go this route. Toluene is also an acceptable solvent. With the solvent of his choice, the chemist rinses the insides of the condenser, vacuum adapter and 250 ml flask to get out the methamphetamine clinging to the glass. This rinse is poured in with the product. Solvent is added to each of the Erlenmeyer flasks until the volume of liquid is 300 ml. They are mixed by swirling. A source of anhydrous hydrogen chloride gas is now needed. The chemist will generate his own. The glassware is set up as in Figure 10. He will have to bend another piece of glass tubing to the shape shown. It should start out about 18 inches long. One end of it should be pushed through a one-hole stopper. A 125 ml sep funnel is the best size. The stoppers and joints must be tight, since pressure must develop inside this flask to force the hydrogen chloride gas out through the tubing as it is generated. Ke 1000 ml, flask Burung Kedidi tiga diletakkan 200 gram garam. Asid hidroklorik pekat 35% maka ditambah flask ini sehingga ia mencecah aras yang ditunjukkan dalam Gambarajah. Asid hidroklorik mestilah Makmal gred. Sesetengah asid sulfurik pekat (99-98%) akan dimasukkan ke dalam corong sep dan spigot dengan bertukar supaya 1 ml asid sulfurik pekat mengalir ke dalam flask. Ia dehydrates asid hidroklorik dan menghasilkan hidrogen klorida gas. Gas ini kemudian dipaksa oleh tekanan melalui tiub kaca. Salah satu flasks Erlenmeyer yang mengandungi methamphetamine dalam pelarut diletakkan supaya tiub kaca yang diperluaskan ke methamphetamine, hampir sampai ke bahagian bawah dalam flask. Titisan dengan asid sulfurik yang lebih banyak diperlukan mengekalkan aliran gas akan methamphetamine di. Jika aliran gas tidak dimiliki dan diselenggara, methamphetamine yang boleh memantapkan di dalam tiub kaca, plugging. Dalam masa satu minit menggelegak, Kristal putih mula muncul di dalam penyelesaian. Lebih banyak dan lebih banyak daripada mereka kelihatan seperti proses berterusan. Ia adalah untuk 460 penglihatan. Dalam beberapa minit, penyelesaian menjadi setebal berair oatmeal. Kini, sudah tiba masanya untuk menapis Kristal, itulah kerja dua orang. Dalam flask dengan Kristal di dalamnya akan dibuang daripada sumber HC1 dan sementara diketepikan. Flask Burung Kedidi tiga swirled sedikit untuk menyebarkan sekitar asid sulfurik dan kemudian flask Erlenmeyer yang lain adalah tertakluk to a bubbling with HC1. While this flask is being buWled, the crystals already in the other flask are filtered out. The filtering flask and Buchner funnel are set up as shown in Figure 11. The drain stem of the Buchner funnel extends all the way through the rubber stopper, because methamphetamine has a nasty tendency to dissolve rubber stoppers. This would color the product black. A piece of filter paper covers the flat bottom of the Buchner funnel. The vacuum is turned on and the hose attached to the vacuum nipple. Then the crystals are poured into the Buchner funnel. The solvent and the uncrystallized methamphetamine pass through the filter paper and the crystals stay in the Buchner funnel as a solid cake. About 15 ml of solvent is poured into the Erlenmeyer flask. The top of the flask is covered with a palm and it is shaken to suspend the crystals left clinging to the sides. This is also poured into the Buchner funnel. Finally, another 15 ml of solvent is poured over the top of the filter cake. Now the vacuum hose is disconnected and the Buchner funnel, stopper and all, is pulled from the filtering flask. All of the filtered solvent is poured back into the Erlenmeyer flask it came from. It is returned to the HC1 source for more bubbling. The Buchner funnel is put back into the top of the filtering flask. It still contains the filter cake of methamphetamine crystals. It will now be dried out a little bit. The vacuum is turned back on, the vacuum hose is attached to the filtering flask, and the top of the Buchner funnel is covered with the palm or a section of latex rubber glove. The vacuum builds and removes most of the solvent from the filter cake. This takes about 60 seconds. The filter cake can now be dumped out onto a glass or China plate (not plastic) by tipping the Buchner funnel upside-down and tapping it gently on the plate. And so, the filtering process continues, one flask being filtered while the other one is being bubbled with HC1. Solvent is added to the Erlenmeyer flask to keep their v

Hasil (Melayu) 2:

Pilihan yang ketiga juga mungkin untuk digunakan sebagai pelarut penghabluran.
Ini adalah spirit mineral yang boleh didapati dari kedai-kedai perkakasan di cat
jabatan. Spirit mineral lebih kurang bersamaan dengan eter petroleum
atau ligroin biasa dilihat di makmal chem. Mereka jenama yang berbangga dengan bau yang rendah
adalah pilihan terbaik. Sebelum menggunakan bahan ini adalah lebih baik untuk fractionally
menyuling, dan mengumpul rendah mendidih titik separuh produk. Ini
mempercepatkan pengeringan kristal. Sejak pilihan spirit mineral menghapuskan eter
dari gelung penawaran, pengendali haram juga boleh pergi laluan ini.
Toluene juga pelarut yang boleh diterima. Dengan pelarut pilihannya, ahli kimia pencuci bahagian dalam daripada pemeluwap, penyesuai vakum dan 250 ml flask untuk keluar methamphetamine yang bergantung kepada kaca. Bilas ini dituangkan dalam dengan produk. Pelarut ditambah kepada setiap daripada termos Erlenmeyer sehingga isipadu cecair adalah 300 ml. Mereka bercampur dengan berpusar. Sumber kontang gas hidrogen klorida kini diperlukan. Ahli kimia akan menjana sendiri. Barangan kaca yang ditetapkan seperti dalam Rajah 10. Dia akan perlu bengkok satu lagi tiub kaca dengan bentuk yang ditunjukkan. Ia harus bermula kira-kira 18 inci panjang. Satu hujung ia perlu ditolak melalui penyumbat satu lubang. A 125 ml corong September adalah saiz terbaik. The penyumbat dan sendi mesti ketat, kerana tekanan mesti membangunkan dalam kelalang ini untuk memaksa gas hidrogen klorida melalui tiub kerana ia dihasilkan. Ke dalam 1000 ml, kelalang tiga berleher diletakkan 200 gram garam. Kemudian 35% asid hidroklorik pekat ditambah kepada kelalang ini sehingga ia mencapai tahap yang ditunjukkan dalam rajah. Asid hidroklorik mestilah gred makmal. Sesetengah asid sulfurik pekat (99-98%) dimasukkan ke dalam corong September dan keran itu bertukar supaya 1 ml asid sulfurik pekat mengalir ke dalam kelalang. Ia dehydrates asid hidroklorik dan menghasilkan hidrogen klorida gas. Gas ini kemudian dipaksa oleh tekanan melalui tiub kaca. Salah satu termos Erlenmeyer mengandungi methamphetamine dalam pelarut yang diletakkan supaya tiub kaca meluas ke methamphetamine, hampir mencapai bahagian bawah kelalang. Menitis dalam asid sulfurik lebih seperti yang diperlukan menyimpan aliran gas akan methamphetamine. Jika aliran gas tidak dikekalkan, methamphetamine boleh mengukuhkan dalam tiub kaca, memasang ia sehingga. Dalam masa satu minit menggelegak, kristal putih mula muncul dalam penyelesaian. Semakin ramai daripada mereka muncul sebagai proses itu berterusan. Ia adalah pandangan mengagumkan. Dalam beberapa minit, penyelesaian menjadi setebal oatmeal berair. Ia kini masa untuk menapis kristal, yang adalah satu pekerjaan dua orang. The kelalang dengan kristal dalam ia dikeluarkan dari sumber HC1 dan menetapkan sementara diketepikan. Kelalang tiga berleher adalah berpusar sedikit untuk menyebarkan sekitar asid sulfurik dan kemudian Erlenmeyer kelalang lain adalah tertakluk kepada menggelegak dengan HC1. Walaupun kelalang ini sedang buWled, kristal sudah dalam kelalang lain ditapis keluar. The kelalang penapisan dan Buchner corong ditubuhkan seperti yang ditunjukkan dalam Rajah 11. Batang longkang corong Buchner memanjangkan semua jalan melalui penutup getah, kerana methamphetamine mempunyai kecenderungan jahat untuk membubarkan penyumbat getah. Ini akan warna hitam produk. Sekeping penapis kertas meliputi bahagian bawah rata corong Buchner itu. Vakum dihidupkan dan hos yang melekat pada puting vakum. Kemudian kristal dicurahkan ke dalam corong Buchner itu. Pelarut dan methamphetamine uncrystallized melalui kertas penapis dan kristal tinggal di corong Buchner yang kek yang kukuh. Kira-kira 15 ml pelarut dituang ke dalam Erlenmeyer yang kelalang. Bahagian atas kelalang itu ditutup dengan sawit dan ia digegarkan dengan menggantung kristal meninggalkan berpaut kepada pihak. Ini juga dicurahkan ke dalam corong Buchner itu. Akhir sekali, satu lagi 15 ml pelarut dicurahkan atas atas kek penapis. Sekarang hos vakum diputuskan dan Buchner corong, penyumbat dan semua, ditarik dari kelalang penapisan. Semua pelarut ditapis dicurahkan kembali ke dalam Erlenmeyer flask asalnya. Ia kembali kepada sumber HC1 lebih menggelegak. The Buchner corong diletakkan kembali ke dalam bahagian kelalang penapisan. Ia masih mengandungi kek penapis daripada kristal methamphetamine. Ia kini akan dikeringkan keluar sedikit. Vakum dihidupkan kembali, hos vakum yang dilampirkan kepada kelalang penapisan, dan bahagian atas corong Buchner itu ditutup dengan tapak tangan atau sebahagian daripada sarung tangan susu getah. Vakum membina dan membuang kebanyakan pelarut dari kek penapis. Ini mengambil kira-kira 60 saat. Kek penapis kini boleh dibuang keluar ke kaca atau China plat (tidak plastik) dengan tip Buchner corong terbalik dan mengetuk perlahan-lahan di atas pinggan. Dan sebagainya, proses penapisan ini berterusan, satu kelalang yang ditapis sementara yang satu lagi sedang dipam dengan HC1. Pelarut ditambah kepada Erlenmeyer yang kelalang untuk menjaga v mereka