CAS number：6440-58-0
molecular formula：C7H12N2O4
molecular weight：188.18
EINECS number：229-222-8

English synonyms

1,3-DIHYDROXYLMETHYL-5,5-DIMETHYLHYDANTOIN;1,3-dimethylol-5,5-dimethyl hydantoin;1,3-Bis(hydroxymethyl)-5,5-dimethyl-2,4-imidazolidinedione;1,3-BIS(HYDROXYMETHYL)-5,5-DIMETHYLHYDANTOIN;bis(hydroxymethyl)-5,5-dimethyl-2,4-imidazolidinedione;Bis(hydroxymethyl)-5,5-dimethylhydantoin;dimethylol-5,5-dimethylhydantoin;Dimethyloldimethyl hydantoin

Related categories

chemical raw materials; chemical intermediates; cosmetic raw materials; organic raw materials; organic chemical raw materials; chemical-chemical additives; organic chemical raw materials; daily chemical raw materials; medical raw materials; chemical raw materials; raw materials; pharmaceutical raw materials; synthetic materials intermediates; chemical materials; Biocide intermediates; daily chemicals; chemical reagents; cosmetic microorganisms - cosmetic antiseptic efficacy test; fine chemical raw materials

Introduction

Colorless and transparent liquid with a slight aldehyde odor. It crystallizes when the ambient temperature is lower than 15°C. It is a formaldehyde releaser, soluble in water and alcohol, and has good heat resistance.

Chemical properties

Use

●  1,3 dimethylol-5,5 dimethyl hydantoin, also known as DMDM hydantoin, English abbreviation DMDMH, DMDMH is a broad-spectrum, high-efficiency antibacterial preservative that resists Gram-positive by releasing formaldehyde It has good compatibility with various emulsifiers and surfactants.
Durable and renewable antimicrobial fabrics are produced in a chemical finishing process through an innovative chemical technology using the precursor biocide dimethyloldimethylhydantoin (DMDMH).

●  Used in shampoos, conditioners, cosmetics as antibacterial preservatives

●  Shampoo, conditioner, cosmetic antibacterial preservative.

Production method

●  A preparation method of antifreeze type DMDM hydantoin,
A 2L three-neck round bottom flask was equipped with a stirrer and a temperature regulator. 600 g of formaldehyde was placed in the flask, and the pH was adjusted to 7.4 with aqueous sodium hydroxide solution. 500 g of hydantoin was added to the flask, a violent exotherm was observed, the temperature rose, and most of the hydantoin was dissolved. The pH was adjusted to 8.3 with aqueous sodium hydroxide solution and the reaction mixture was stirred for an additional 1 hour at 55°C. 175 g of water were added and then cooled to room temperature. Add 10.5g NH4Cl and stir well. Adjust pH to 7.0. The above product is antifreeze DMDM hydantoin.

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