5,5-Dimethylhydantoin CAS No.77-71-4

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Introduction

CAS No.77-71-4

Name:

5.5-Dimethylhydantoin

Synonyms:

T10

DMH

t10[qr]

dmh[qr]

nsc8652

dantoindmh

dmhydantoin

DM Hydantoin

Dimethylhydantoin

5.5-Dimethylhydantoin

5.5-Dimethylhydrantoin

5.5-Dimethyl hydantoin

Hydantoin, 5.5-dimethyl-

5.5-Dimethyl-2.4-imidazolidinedione

5.5-dimethylimidazolidine-2.4-dione

Reference Information:

Introduction:

5. 5-dimethylhydantoin is an important organic synthesis intermediate with a wide range of uses, it is a heterocyclic compound with a certain rigid skeleton. A range of valuable derivatives can be prepared by substitution reactions. Such as: dibromohydantoin, dichlorohydantoin and other widely used in organic synthesis, medicine, plastics, food, cosmetics, pesticides and other production areas.

Application:

5. 5-dimethylhydantoin, also known as 5. 5-dimethylhydantoin, DMH, is a wide range of uses of organic synthesis intermediates, is a rigid heterocyclic compounds, can be prepared by substitution reaction of a series of valuable derivatives, such as: dibromohydantoin, dichlorohydantoin and other widely used in medicine, fine Chemicals in the production of pesticides, plastics and cosmetics.

preparation    a. Add 600-800 parts of ammonium bicarbonate and 500-700 parts of acetone cyanohydrin to water and stir to fully dissolve, sealed when heated to 10 ℃; B. 30-50 parts of ammonia gas is introduced into the material prepared by Step a, and heated slowly to 50-65 ℃ for 1-2 hours, and stirring; c, the material prepared by Step B is heated to 75~85 ℃, the air is drawn for 30~50 minutes, and then cooled to room temperature and filtered to obtain crude dimethyl hydantoin and mother liquor; d. 950~1150 parts of crude dimethyl hydantoin prepared by Step c is put into a mixture of 150~300 parts of water and 700~900 parts of mother liquor, after heating to 80~98 ° C., 3~8 parts of activated carbon is added, decolorization is carried out for 20~40 minutes, the activated carbon is removed by filtration, and then crystallization is cooled, centrifugal filtration and drying are carried out to obtain a dimethyl hydantoin finished product.

uses :

for amino acid synthesis, but also as a special epoxy resin and water-soluble resin, fungicides, preservatives, etc. Its derivatives such as 1. 3-dichloro-5. 5-dimethylhydantoin can be used as chlorinating agent, Disinfection bactericide, 3-hydroxymethyl-5. 5-dimethylhydantoin is useful as a formaldehyde agent, a preservative, and the like.

mainly used as disinfectant, epoxy resin and amino acid raw materials

production method:

is obtained by reacting acetone cyanohydrin ([75-86-5]) with an aqueous ammonium carbonate solution at 50-80 °c.

 

Attribute Details
Chemical Name 5.5-Dimethylhydantoin
Other Names 5.5-Dimethyl-2.4-imidazolidinedione; 5.5-Dimethylimidazolidine-2.4-dione; Dimethylhydantoin; etc.
CAS Number 77-71-4
Molecular Formula C5H8N2O2
Molecular Weight 128.13 g/mol
Appearance White to grayish white crystals or crystalline powder
Melting Point 175°C (literature value may vary slightly)
Density 1.142 g/cm³
Flash Point 193°C
Solubility Soluble in water, ethanol, ethyl acetate, and dimethyl ether; slightly soluble in isopropanol, acetone, and methyl ethyl ketone; insoluble in aliphatic hydrocarbons and trichloroethylene
Production Method Obtained by reacting acetone cyanohydrin with ammonium carbonate aqueous solution at 50-80°C
Applications Used in amino acid synthesis; as a specialty epoxy resin and water-soluble resin; as a fungicide and preservative; derivatives such as 1.3-dichloro-5.5-dimethylhydantoin are used as chlorinating agents and disinfectants, while 3-hydroxymethyl-5.5-dimethylhydantoin is used as a formaldehyde agent and preservative
Storage Conditions Store in a cool, dry place, away from direct sunlight and heat, and keep away from incompatible materials
Safety Information Handle with caution, avoiding contact with skin and eyes; follow standard chemical safety procedures and wear appropriate protective clothing and eye/face protection

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