Nanjing Chemical Material Corp.
Service
Products

Preparation of Ethyl Iodide Preparation of Ethyl Iodide

Principle:

Ethyl iodide is usually reacted with ethanol, iodine and red phosphorus, but the reaction is slow, and it needs to be heated in a reflux device for several hours.

Supplies:

Flask, straight condenser, beaker, red phosphorus, alcohol, iodine crystals, zeolite, 5% NaOH solution, anhydrous calcium chloride.

Operation:

2 g of red phosphorus and 25 ml of alcohol were added to a 125 ml flask, and 18 g of finely divided iodine crystals were added in portions under shaking, followed by the addition of 3 zeolites. A straight condenser was placed on the flask and allowed to reflux for half an hour by heating in a water bath. After the reaction is completed, the mixture is cooled, and the reflux straight condenser is discharged, and then the condenser is replaced with a common distillation apparatus. It should be noted that the receiver should be filled in a cold water bath to prevent the produced iodoethane from being volatilized.

The iodoethane was distilled off in a boiling water bath. The distillate can be transferred to a separatory funnel and browned as the liquid contains iodine. First wash the mixed ethanol with distilled water, then wash the free iodine with a small amount of 5% NaOH solution, and dry it with anhydrous calcium chloride in a condenser, then put it on a water bath for distillation, then there is iodine. When ethane is present, a fraction of 70 - 74 ℃ (343-347 K) can be collected. Pure ethyl iodide is a colorless oily liquid with a boiling point of 72.3 °C.

Remarks:

1. When preparing ethyl iodide, add iodine once. However, the added iodine should not be excessive, and the reaction will be exothermic, which will increase the temperature. Therefore, keep the reactants at 20 ℃ to prevent a large amount of volatile substances from being distilled out to cause loss. Iodoethane should be stored in a brown closed bottle to prevent problems with lightening and loss of volatilization.

2. The outlet tube of the distiller should be inserted under the water surface, and always pay attention to prevent back suction.

3. The experiment is not well controlled, and the purity of iodoethane will have an effect. Methyl iodide is a highly toxic substance, and iodoethane also has certain toxicity. Please pay attention to safety protection.
Related News
  • Role And Types of Surfactants

    Role And Types of Surfactants

    March 4, 2021Surfactants are chemical substances that have a wide range of applications in different industries and are an important part of many of the products we use on a daily basis. They can be defined as sub...view
  • Production and Function of Monoammonium Glycyrrhizinate

    Production and Function of Monoammonium Glycyrrhizinate

    April 21, 2020Monoammonium glycyrrhizinate in China is a chemical substance. This product is mainly used for the treatment of chronic persistent hepatitis, chronic active hepatitis, liver poisoning, and early liver...view
  • Characteristics of Alpha Olefin Sulfonate

    Characteristics of Alpha Olefin Sulfonate

    July 6, 2020Alpha olefin sulfonate is a formaldehyde-free solution of sodium c14-c16 that preserved by mCi/MI.view
  • The Application of N-octyltriethoxysilane as the Impregnant

    The Application of N-octyltriethoxysilane as the Impregnant

    April 21, 2021N-octyltriethoxysilane is a kind of medium-chain alkyl silane with a monomolecular structure. It is a kind of colorless and transparent liquid that can be soluble in ordinary non-polar organic solvent...view
  • Glycolic Acid and Its Benefits

    Glycolic Acid and Its Benefits

    July 12, 2022In the past, glycolic acid was mainly used in the manufacture of boiler cleaners and cleaning agents. In recent years, it has been widely used in cosmetics and pharmaceuticals, and it has also attract...view
  • Tetraethyl Ammonium Hydroxide Solution

    Tetraethyl Ammonium Hydroxide Solution

    October 13, 2021Tetraethyl ammonium hydroxide is quaternary ammonium base, a strong organic base, similar in molecular structure to ammonium hydroxide and more alkaline than sodium hydroxide and potassium hydroxide.M...view
  • 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