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Hydantoin

Updated: 2026-07-20

Overview

Hydantoin, chemically known as 2,4-imidazolidinedione, is a heterocyclic organic compound with a wide range of industrial and pharmaceutical applications. It is commonly found as a white crystalline powder and is known for its stability and solubility in various solvents. Hydantoin derivatives are particularly significant in the synthesis of anticonvulsant drugs and as preservatives in cosmetics. First synthesized in the late 19th century, hydantoin has since become a cornerstone in several chemical processes. Its versatility stems from its ability to form derivatives that enhance its functionality in different applications, making it a valuable compound in B2B markets.

Physical and Chemical Properties

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Hydantoin exhibits a melting point range of 220-225 °C and a density of 1.42 g/cm³. It is soluble in water, ethanol, and acetone, which makes it highly versatile for formulations in liquid and solid states. The compound is stable under normal conditions and is non-flammable, contributing to its safe handling in industrial settings. Its molecular structure includes two nitrogen atoms and a carbonyl group, which are reactive sites for further chemical modifications. This structural feature allows hydantoin to be a precursor for various derivatives, such as 5,5-dimethylhydantoin, which is widely used in water treatment and personal care products.

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Main Applications

Hydantoin is primarily used in the pharmaceutical industry as a building block for anticonvulsant drugs like phenytoin. It also serves as a key intermediate in the synthesis of other therapeutic agents. In cosmetics, hydantoin derivatives act as preservatives due to their antimicrobial properties, extending the shelf life of products like shampoos and lotions. Industrially, hydantoin is employed in the production of resins, adhesives, and coatings. Its ability to form stable compounds under varying conditions makes it ideal for these applications. Additionally, it is used in agriculture as a component in certain herbicides and fungicides.

Safety and Storage

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While hydantoin is generally stable, proper safety measures should be observed during handling. Inhalation of dust and direct skin contact should be avoided to prevent irritation. Personal protective equipment (PPE), such as gloves and masks, is recommended when working with the compound. Storage conditions should include a cool, dry environment away from direct sunlight to maintain its stability. Containers should be tightly sealed to prevent moisture absorption, which could affect the compound's efficacy in formulations.

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B2B Procurement Guide

When procuring hydantoin, B2B buyers should prioritize suppliers with verified certifications to ensure product quality. Key factors to consider include purity levels (typically 98-99% for industrial use) and CAS number verification. Pricing varies based on quantity and supplier, with bulk purchases often offering cost advantages. It is advisable to request samples for quality testing before large-scale procurement. Additionally, buyers should assess the supplier's logistics capabilities to ensure timely delivery and proper handling of the compound.

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