Nanjing Chemical Material Corp.
Service
Products

How Is Ethyl Bromide Prepared From Ethyl Alcohol 2 How 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.

Related Products Wiki
  • What Are the Uses of Glycyrrhizic Acid?

    What Are the Uses of Glycyrrhizic Acid?

    March 22, 2022In traditional Chinese medicine, people's use method of Chinese herbal medicine is nothing more than grinding and boiling. Although this can achieve the purpose of curing diseases and saving peopl...view
  • Learn About the Application and Storage of Allyl Alcohol

    Learn About the Application and Storage of Allyl Alcohol

    June 7, 20221. Understand allyl alcoholAllyl alcohol, also known as garlic alcohol, 2-propen-1-ol, is an organic compound with a chemical formula of C3H6O, which is highly toxic. Raw materials of diallyl dicarbox...view
  • Precautions for Using Mixed Methylpyridine

    Precautions for Using Mixed Methylpyridine

    October 26, 20211. About mixed methylpyridineMixed picoline is a member of the compound class of picoline. Picoline is an organic compound containing a pyridine ring substituted by a methyl group at one or more posit...view
  • The Preparation Technology and Storage Condition of Methyl Iodide

    The Preparation Technology and Storage Condition of Methyl Iodide

    October 30, 2020Methyl iodide cas is a halogenated hydrocarbon. The molecular formula is CH3I, MeI and it is an iodide substitute of methane. Methyl iodide cas is a kind of volatile liquid with high density at room t...view
  • Potential Biological and Toxicological Effects of 1,2-Epoxybutane

    Potential Biological and Toxicological Effects of 1,2-Epoxybutane

    August 22, 2024In the fields of chemistry and industry, it is crucial not only to understand the applications and uses of various compounds but also to be aware of their potential biological and toxicological effect...view
  • 79th API China

    79th API China

    January 31, 2018November 15-17, 2017Xiamen International Convention and Exhibition CenterAPI China is China's leading exhibition for the pharmaceutical manufacturing sector covering the complete spectrum of products ...view
Related Products
  • Acrylonitrile Product InformationProduct Name: AcrylonitrileChemical Formula: CAS No.: 107-13-1Dangerous Grade: 6.1Technical Data:ITEMSINDEXAppearanceColorless and transparentChroma5maxDensity20℃(g/cm3)0.800~0.807Acidity ...
  • 2-Methyl Pyrazine Product Name: 2-Methyl pyrazineChemical Formula: C5H6N2CAS No.: 109-08-0Dangerous Grade: 3Technical Data:ITEMSRESULTSAppearanceColorless transparent liquidOdorHas cocoa and nuts like aromaAssay≥98.0%...
  • Polyethylene Glycol Product InformationProduct Name: Polyethylene Glycol 400 Chemical Formula: CAS No.: 25322-68-3Dangerous Grade: Technical Data:ITEMSSPECIFICATIONHydroxyl Number as mgKOH/g 267-295pH (5% Aq.solution) a...
  • Butyl Iodide Product Name: Butyl iodideChemical Formula: C4H9ICAS No.: 542-69-8Dangerous Grade: 3Technical Data of Butyl IodideITEMSSPECIFICATIONSRESULTSAppearanceColorless transparent liquidConformsAssay≥99%99....
  • TEL:+86-25-52337978
  • EMAIL: info@njchm.com
  • ADDRESS:12/F, Block B, Technology and Innovation Building, Nanjing University of Technology, No.5 New Model Road, Nanjing 210009, China