About these methacrylic polymers,is there solubility not dependant on ph?
Like,dont they become insoluble at around ph5?
Why not extract with alcohol,filter,acidify alcohol pull @ph5,wait,filter and then carry on with what ever extraction steps you feel are still needed.
Sorry if this has been mentioned.
Some reading for you Ware :) http://www.pharmcast.com/PatentToSubWeb/Classification/Classification500.htm#Microencapsulation (http://www.pharmcast.com/PatentToSubWeb/Classification/Classification500.htm#Microencapsulation)
like you havent read it all already.
(Waste of time)
Edit: Depending on where you live, you might be able to distill it or not... If you're in the EU: Post 511332 (https://www.thevespiary.org/talk/index.php?topic=7778.msg51133200#msg51133200)
(methyl_ethyl: "EU Ethanol Denaturation", Stimulants)
This bee tried Jacked's advice on da red one's and by god he is right again! ;) De-redding works wonders for the filtration. With no notice of lost pseudoephedrine.
Here is a link for the sulfuric acid hydrolysis and an excerpt:
The 7% final sulfuric acid concentration run gave maybe 25% yield of what seems to be high quality pseudoephedrine. It may well be mixed with ephedrine, racephedrine...
The 5% final sulfuric acid concentration boil gave over 50%, and maybe close to 65% yield of what seems to be high quality product.
Post 523508 (missing)
(UncleFester: "sulfuric acid hydrolysis", Stimulants)
This method was tried on name brand pills with 4mg of Chlorpheniramine maleate and 60mg of Pseudoephedrine HCl per pill. With the following inactives: lactose, magnesium stearate, potato starch, and povidone. Upon adding KOH to the IPA no color change was noticed. The solution was clear for about 5 minutes... then it turned a murky yellowish... then a dark brown. As the solution turned brown a dark red precipitate came out of solution (it looked like RP). The last bits of KOH that where about to dissolve also turned this dark red color. The solution was allowed to boil for 20 minutes and no layers formed. The red precipitate was filtered out and the solution was allowed to cool and let sit for a few hours to see if any layers would form... no layers formed. This dark brown solution was evaporated on very low heat and there was a brownish crystalline mass at the bottom that looked like it had a gravy mother over it. Some dH20 was added to the beaker and put into a sep funnel and then some Toluene was added to the beaker and that was placed into the sep funnel. Most of the brown solid stayed in the aqueous phase. The Toluene was washed two times with dH20. The Toluene was then dried and gassed. DrugPhreak expected no crystals to form, but white crystals did in fact form. DrugPhreak doesn't know what these crystals are though cause they sure ain’t P-Fed. ::) :( They are not bitter at all... not acidic either. They had a slightly salty taste. Potassium Chloride maybe or something?!??! O_o ::) :( >:( :o
DrugPhreak put the rest of their feed thru the Straight to E procedure and it appears that very nice P-Fed was obtained from these pills that way. DrugPhreak used some of their post Straight to E feed with this KOH/IPA procedure just to see if that red precipitate would form... it didn't and the solution stayed clear. DrugPhreak didn't go thru the whole process again cause they where getting sleepy as fuck and felt extremely exhausted... not to mention braking their 1000ml sep funnel. :( >:( DrugPhreak was amazed that the solution stayed clear though. Other tests where preformed on this feed obtained with Straight to E and they all went well (e.g. burn test) etc.
DrugPhreak is truly sick and tired of the gakk and this will be their last time obtaining feed from pills. I think it's really about time we all use the easily obtainable Ma-Huang to get our feed. These pills are seriously overpriced and we don't need their damn pills! We shouldn't have to jump thru loops to get high and we don't have too! Let them keep their infestations to themselves. I will devote as much time and energy that is needed to prefect a Ma-Huang extraction that is easy, OTC, and high yielding. I'm in the process of obtaining and translating the follow patents. If any Bees can help me obtain these patents or can translate them I would appreciate it very much. They are:
Patent CN1132740 (http://l2.espacenet.com/dips/viewer?PN=CN1132740&CY=gb&LG=en&DB=EPD)
Patent CN1443749 (http://l2.espacenet.com/dips/viewer?PN=CN1443749&CY=gb&LG=en&DB=EPD)
Patent IN185200 (http://l2.espacenet.com/dips/viewer?PN=IN185200&CY=gb&LG=en&DB=EPD)
Patent CN1364756 (http://l2.espacenet.com/dips/viewer?PN=CN1364756&CY=gb&LG=en&DB=EPD)