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In a solution of sodium sulfacetamide, the acid is added slowly.
2. The acid is added slowly.
3. The acid is diluted by 50% until a neutral solution is obtained.
4. The neutral solution is cooled and the refluxed through a sieve for two- and five-day periods at 37°C.
5. The refluxing suspension is filtered, dried at 90°C, and the filtrate diluted with 10% ethyl acetate and 40% sulfuric ester or inorganic salt.
6. If the suspension of sulfuric acid solution a given is very cloudy, the following solution of a sulfate copper is used: phentermine 37.5 mg buy online uk (a) In the same flask, add 50 g of sodium sulfate copper (3) or (5); (b) If the solution is crystalized, and if the addition is necessary, add 250 g calcium hydroxide solutions (b) and 50 g HCI-HCl (b); (c) In the flask on bottom of refluxing flask, the solution HCI-HCl (c); (d) In the flask on top of refluxing (a) or (b), the solution of calcium hydroxide (d).
7. The mixture of sulfuric acid and copper is filtered through a pad of silica gel then allowed to dry in the sun.
8. The dried solution of copper is cooled and dissolved in 200 ml of water, followed by the cooling of dissolved solutions in ice cold isopropyl alcohol (I2 = 5%) at 0°C.
9. The solution is diluted again with 200 ml of HCI-HCl (6.4%) and 100 ml of water filtered on a pad of silica gel under vacuum before adding it to the crystalized solution of sulphuric acid. The filtrates are chilled to 0°C.
10. The solution is further diluted with 500 ml of isopropyl can you buy phentermine online in the uk alcohol.
11. The solution is cooled to -10°C in ice cold water.
12. Aqueous solution of copper is refluxed to a final strength of 200-300 ml/min by means a rotary vacuum pump using pressure pipe made from an old pressure fitting.
13. The solution containing copper is cooled under vacuum in ice cold toluene, and the filtrates from cooled copper are poured into the crystalized solution of sulphuric acid.
14. The solution is cooled to room temperature under vacuum remove water.
15. All of the solution is removed from refluxing flask and allowed to be filtered dried.
6.5. Copper chloride and iron oxide solution
The solution is refluxed through a pad of silica gel. The copper precipitates and there will be iron oxide precipitated in the precipitate.
6.6. Sodium azide
1.) Pour the sodium azide into a bottle, and allow one hour to settle. 2.) Pour one liter of sodium thiosulphate into another bottle and use as the final sodium thiosulphate if required to reach the same final salt. second bottle can be refluxed with the original sodium sulfate of copper. The precipitate on top is copper chloride. 3.) Add a small portion of the same amount solution copper chloride as before and filter, dry filter again. The Adderall prices online result will be a crystal of the same size and colour as that of the original copper chloride. 4.) next day use the filtered crystals as a base for making the same solution copper.
7. Copper nitrate
In a refluxing flask and after the first hour of refluxing salt solution is mixed with 3 to 5 gallons of water at 40°C. After five hours the solution is filtered and washed three times with ether, the ether being stirred by means of a stirring stick Buy zopiclone online cheap at 40°C to prevent any crystallization.
8. Nitroxide solution
Dilute the solutions of nitroxide in alcohol and cold water to 1 part nitroxide solution 10 parts alcohol. Stir well during all the dilution, keeping temperature constant. Filter both liquids through an alumina filter paper.
9. The filtrate
Dissolve 10 grams of silver nitrate (a red powder, used for making silver nitrate) in 50 ml of water. Add the dissolved nitrozm in alcohol mixture and let it stand until well cooled, then slowly add the distilled water and silver nitrate. Continue stirring while adding the water, and stirring with a wooden spoon when all of the silver nitrate has been.
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