Skip to main content

How Is Ethyl Bromide Prepared From Ethyl Alcohol 2How Is Ethyl Bromide Prepared From Ethyl Alcohol 2

 1. Preparation of ethyl bromide from ethyl alcohol and hydrobromic acid

Start with a 1-liter double neck round bottom flask with a drop funnel and wide bend. The bend is connected to a long and efficient condenser assembly and receiver for downward distillation. First, place 281ml (or 415 g) 48% hydrobromic acid in a flask, then add 65ml (or 120 g) of concentrated sulfuric acid in batches, while shaking. As it cools, a small quantity of 145ml (or 100 g) 95% ethanol is slowly added to the mixture of sulfuric acid and hydrobromic acid. Then 109ml (or 200g) of concentrated sulfuric acid is slowly added to the drop funnel, and the ethyl bromine obtained by slow distillation is collected in the cold receiver flask. The crude ethyl bromine was washed with equal volume of concentrated hydrochloric acid, then washed with water and a small amount of 5% sodium bicarbonate solution, then washed with water, and finally dried the ethyl bromine with anhydrous calcium chloride. The crude ethyl bromide is purified by distillation and 205 grams of pure ethyl bromine is obtained.

 

2. Preparation of ethyl bromide from ethyl alcohol and potassium bromide

Add 50g of concentrated sulfuric acid to 25g of ethanol and let it cool under continuous stirring. Pour in 60g of powdered potassium bromide and let the mixture rest overnight. The next day, the ethyl bromine is distilled and washed, washed with dilute sodium carbonate solution and water. Finally, the obtained bromoethane was dried and re-steamed with calcium chloride.

 

3. Preparation of ethyl bromide from ethyl alcohol and bromine

Place 60g of ethanol and 10g of red phosphorus in a round bottom flask cooled with cold water. Then 60g of bromine was slowly added to the droplet funnel while the mixture was stirred and cooled. When all the bromine is added, stir the mixture for another hour. The ethyl bromide is then distilled and washed with dilute sodium carbonate solution and distilled water. Finally, using calcium chloride ethyl bromide and distillation, got in 38 ℃ boiling colorless heavy liquid.

 

For more information about Methyl Iodide, please feel free to contact us!



Labels:

Comments

Post a Comment

Popular posts from this blog

The Difference Between Nitrile Rubber and NBR LatexThe Difference Between Nitrile Rubber and NBR Latex

  Affected by public health incidents, NBR latex   is like a dark horse that has attracted the attention of the international market. Nitrile rubber and NBR latex are very different in use.   1. The difference in performance between nitrile rubber and NBR latex Nitrile rubber is produced by emulsion polymerization of butadiene and acrylonitrile. Nitrile rubber is mainly produced by low-temperature emulsion polymerization. It has excellent oil resistance, high abrasion resistance, good heat resistance, and strong adhesion. . Its disadvantages are poor low temperature resistance, poor ozone resistance, poor insulation performance, and slightly lower elasticity. Nitrile rubber is mainly used to make oil-resistant rubber products.   Carboxylic nitrile latex is obtained by introducing methacrylic acid or methacrylate ternary copolymer during polymerization. Since the carboxyl nitrile nitrile latex introduces a more polar carboxyl group into the molecular backbone, it furt...
Post a Comment
Read more

Hexyl Bromide

  Features of n hexyl bromide Product Name: 1-bromhexan Chemical Formula: C6H13Br CAS No.: 111-25-1 Dangerous Grade: 3   Package and Storage: 200kg/drum Store in a cool, dry place. Store in a tightly closed container. Application /Application Industries: Organic synthesis Flavors and fragrances Used as solvents   For more information about glycolic acid , please feel free to contact us!
Post a Comment
Read more

Difference Between Sodium Laureth Sulfate And Sodium Lauryl Sulfate

Sodium laureth ether sulfate  (SLS) and sodium lauryl ether sulfate (SLES) are surfactants that play a role in foaming products. It is widely believed that the foam produced by a product is its performance. The composition of SLS and SLES reduces the surface tension of water. They can also be used as dispersants to properly mix spices and body spray. SLS and SLES can also be used in a variety of personal care products such as soap, shampoo, shower gel, toothpaste and other foaming products. SLS and SLES are also added to moisturizing lotions and sunscreens because of these properties. The difference between SLS and SLES is in the manufacturing process. SLS undergo a process called ethoxylation. And then you get SLES. Why do we have this ethoxylation process? Because SLS has some mild irritation on the skin, such as dry. The manufactured SLES are more gentle and do not irritate the skin. Many manufacturers do not use SLS because it is irritating. SLES should be softer o...
Post a Comment
Read more