Question Къде да купя техническа сярна киселина?

[Mr.Magic]

Здравейте заедно,

последният път, когато съм купувал сярна киселина, беше преди около 2 години, когато можеше да се купи почти навсякъде без специални разрешения. Беше малко преди тя да бъде класифицирана като опасно вещество в Европа.
Повечето онлайн дистрибутори на химикали изискват декларация за крайна употреба.

И така, откъде мога да купя количества от 1-5 л сярна киселина с чистота <95%??
Има ли някой клирингов/даркнет пазар, където се предлага сярна киселина и други химически стоки?

Mr.Magic

 

[Never to sleep]

Сярната киселина с чистота 95% не е технически клас. Не "повечето" дистрибутори изискват декларация от крайния потребител, а всички. Просто няма да можете да я купите, освен ако не я купувате като предприятие и не декларирате законна употреба за нея.

Някои препарати за почистване на канали съдържат нискокачествена сярна киселина, която можете да извлечете и концентрирате до желаната от вас концентрация. Имайте предвид обаче, че изваряването на концентрирана сярна киселина не е шега работа, тъй като трябва да се извършва при температури над 300 °C.

Що се отнася до пазара, можете да използвате този форум, за да купувате стоки. Ако наистина се нуждаете от нея, можете да ми изпратите директно съобщение и аз бих могъл да ви изпратя малко.

 

[Unknown1505]

hey..ist das noch aktuell? könntest du mich mal anschreiben??

 

[amieri]

Distillation of drain cleaner is necessary "hard" and it's a great opportunity to get serious about your procedure.you was to be prepared for absolutely anything.
Ideally outside "lots of white smoke looking gas that does not condense I believe sulphuric oxide "set up a folding table then use some Rubbermaid totes as catch basins just in case and put one stand in a tote and one right next to the basin's' on the outside with a metal clamp holding a two next round bottom with a bunch of smashed glass in it ." it's going to bump very hard when it gets going "a good 6-8 inches of the table with a propane camp grill or similar on a scissor jack so your able to adjust the heat by raising or lowering the the source of flame.
Off your round bottom attach a column then arm ,to your condenser to you vac adapter to your reserver flask.all joint wrap in Teflon tap and metal clamps making sure all clamps hold the glass are tight on both the stand and the glass.the bumping is serious and could easily loose a clamp.now get dressed with two layers covering every single inch of your body from your head to toes.and ideally a acid resistant apron and matching gloves.you can also find chem resistant jump suits at army Navy store that are thick and lined with carbon and face shield "something like a welders helmet". now empty a 4lb box of baking soda into a five gallon bucket and fill 2/3 way up with water this is in case of emergency have a cup or two filled with the base water ready to go next to it .now fill your two neck through the open neck half way with the drain cleaner plug/clamp the neck and light the burner and adjust the jack so the tip of the flames 3-5 inch below the bottom of the flask. Set up a seat a good distance away making sure your up wind of the set up and hopefully sit board watching your distillation for the next few hours.you also don't want any cooling to the condenser the temp differential will crack it which fn sucks.
When you're done you can use the base water and the totes to rinse/neutralize your contaminated glass.
It may seem like over kill but this sh*ts no joke as you see in those pictures.and honestly every action in this hobby should be taken just as serious. Complacment breeds disaster and sadly people tend to skip over safety details in forums way to often.
Good luck and don't be scared be cautious

 

[dnBQByvHb8Zkawbjpx]

In the EU one can buy sulfuric acid up to 15 % concentration with no restrictions. Anything above requires you to have a registered business with a legitimate use case for it, and to fill out the declaration of use of explosives precursors. Or purchase through the dark web.

Being in the EU and not having a business to front my purchase I recently got 40 liters of 14 % sulfuric acid. I was able to reach 80 % concentration by simply boiling off the excess water in a 2 liter beaker on a hot plate. It took me about 5 days of constant boiling/cool down/siphon/refill/repeat and now I have 5 liters of 80 % acid waiting for the final processing step. Today I sourced all missing tools and soon I'll go forward with the distillation into 96 % purity. In the end I expect to get 4 liters of 96 % sulfuric acid obtained through distillation at 337 °C.