Synthesis of Magnesium Bicarbonate Magnesium Bicarbonate: The instant invention is based upon the discovery of a method for recovering extremely high purity magnesium carbonate from a magnesium hydroxide slurry. The magnesium hydroxide slurry can be produced in any conventional way, for example by adding lightly burned dolomite or lime, preferably the former, to sea water or the like to precipitate magnesium hydroxide, and then processing the precipitated hydroxide in a conventional way. The slurry can also be produced by suspending in water burned magnesite, burned dolomite or other natural or processed materials which will form magnesium hydroxide that can be…
Author: Ethan Frank
Preparation of Acetyl Chloride Most commonly acetyl chloride prepared by the action of phosphorus trichloride on acetic acid, since acetyl chloride boils at 51° C and it is easily separated by simple distillation from the nonvolatile phosphorous acid. Phosphorus pentachloride reacts equally well, but in this case, the second reaction product is phosphorus oxychloride, which boils at 107° C and the separation is not easily accomplished. However, acetl chloride prepared from phosphorus oxychloride is very pure with very constant boiling and does not become turbid on standing. Preparation of acetl chloride with commonly used thionyl chloride is not practical as…
Preparation of Nitrobenzene Nitrobenzene: 81.5 ml of concentrated sulfuric acid (d=1.84 g/ml) are mixed gradually with frequent shaking with 71.5 ml of concentrated nitric acid (d=1.4 g/ml). After cooling the mixture to the room temperature, by immersion in a cold water bath, gradually, with constant stirring, 57 ml of benzene are dropwise added. If the temperature rises above 50-60° C, the nitration reaction is interrupted, and the flask is cooled with the ice water. When all of the benzene has been added, a reflux condenser is attached to the reaction flask and mixture is gently heated for an hour at…
Preparation of hydrogen iodide The HI could be obtained by dehydrating hydroiodic acid with phosphorus pentoxide. The concentrated solution of hydroiodic acid added dropwise to the phosphorus pentoxide. The gas evolved was purified by passing trough a tube filled with phosphorus pentoxide and condensed with liquid nitrogen. HI was distilled from the solid state and condensed in the receiver as white material.
Synthesis of Barium Phosphate Barium phosphate was prepared by the following procedure. Barium hydroxide (31.23 grams of Ba(OH)2 8H2O, 0.099 moles) was dissolved in 500 grams of deionized water and added to a 1 liter reaction flask fitted with a magnetic stirring bar, reflux condensor and dropping funnel. The hazy solution was heated to 68° C., and treated dropwise over a 30 minute period with a solution of 7.61 grams of 85%w phosphoric acid (0.066 moles of acid) in 50 grams of deionized water. The resulting milky white mixture was heated further at 80° C. for an additional two hours,…
Contracts are crucial written or verbal agreements your business has with third parties, such as clients, staff members, business partners, or suppliers. The main goal of contract management is to simplify the process of working with agreements and reduce potential hazards like missing documents or missed deadlines. By putting the strategies listed below in place, you may be able to handle your contracts and contractual obligations more effectively. Also, we recommend using Salesforce CLM software if you want an effective contact management. 1. Pick the most qualified contract manager A strong contract manager will be knowledgeable about particular facets of contract regulations…
Preparation of Mercury Fulminate Mercury Fulminate: 5 g of metallic mercury is added to 35 ml of concentrated nitric acid (d=1.42 g/ml) in a 100-ml Erlenmeyer flask, and the mixture is allowed to stand without shaking until the mercury has gone into solution. The acid liquid is then poured into 50 ml of 90% alcohol in a 500-ml beaker in the hood. Mercury Fulminate: The temperature of the mixture rises, a vigorous reaction commences, white fumes come off, and crystals of merury(II) fulminate soon begin to precipitate. Red fumes appear and the precipitation of the fulminate becomes more rapid, then white…
Preparation of Calcium Sulfide Calcium Sulfide: Unless the charcoal is already very finely powdered, it should be ground thoroughly in a large porcelain mortar. 48 g of charcoal are mixed with 145 g of gypsum (CaSO4 • 1/2H2O; plaster of Paris) and placed in the clay crucible. Calcium Sulfide: The crucible is heat in a gas furnace to between a bright red and a yellow heat for 1.5 hours. At the end of the reaction, the crucible is removed from the furnace and when cold, the contents of the crucible are inspected and there should be no unburned charcoal left. A small sample should dissolve with…
How to Make Chloroform How to Make Chloroform: 200 g of fresh bleaching powder are ground up to a thin paste with 800 ml of water. The mixture is transferred to a large flask fitted with a distillation condenser and receiving flask. 40 g of acetone or ethanol are then added and the reaction mixture is cautiously heated until the reaction sets in. How to Make Chloroform: The chloroform is removed by distillation and the distillate is washed with dilute solution of sodium hydroxide, dried over calcium chloride, and then redistilled. Chloroform is a heavy colorless liquid with a sweet…
Preparation of Phosphorus Pentachloride The direct reaction of phosphorus trichloride and chlorine under controlled conditions provides a simple method for preparing a high grade and yield of phosphorus pentachloride. A glass apparatus for the synthesis of Phosphorus Pentachloride is shown below. A is a tank of chlorine, however a chlorine prepared by reaction of potassium dichromate and hydrochloric acid also could be used. B, a safety bottle; C, a bubbling bottle to observe rate of flow of chlorine gas, bottle C also serves for drying Cl2; and D, a 2 lite reaction flask – neckless jar fitted with a three-hole stopper.…