CAS 7553-56-2: An Overview of Iodine Balls


Iodine balls, with the chemical formula I2 and CAS number 7553-56-2, are solid elemental iodine spheres that have a variety of applications in different industries. They are commonly used for their disinfectant, antiseptic, and analytical properties. This article provides an overview of the uses, properties, and safety considerations associated with iodine balls.

I. The Role of Iodine Balls in Disinfection and Antiseptic Applications:

A. Disinfection:

Iodine balls are widely utilized as disinfectants due to their broad-spectrum antimicrobial properties. They are commonly used in water treatment systems, particularly in emergency situations or areas with limited access to clean water. Iodine balls can effectively kill bacteria, viruses, and protozoan pathogens, making them valuable for purifying water for drinking and other purposes.

B. Antiseptic:

In the medical field, iodine balls find application as antiseptics. They are used for wound care and surgical preparation to prevent infection. Iodine balls release iodine vapor, which acts as an antimicrobial agent, effectively killing microorganisms on the skin and reducing the risk of contamination during medical procedures.

II. Properties of Iodine Balls:

A. Physical Properties:

Iodine balls are solid in nature and typically appear as small, dark-colored spheres. They have a distinctive odor and can sublime at room temperature, meaning they can transition from a solid to a gaseous state without passing through a liquid phase. Iodine balls have a molecular weight of 253.80 g/mol and a melting point of approximately 113.5°C.

B. Chemical Properties:

Iodine balls possess strong oxidizing properties and can react with various substances. They readily dissolve in organic solvents such as ethanol and diethyl ether, forming solutions that can be used in analytical applications. Iodine balls can also react with reducing agents, forming iodides.

III. Safety Considerations and Precautions:

A. Handling and Storage:

When working with iodine balls, it is important to handle them with care. Direct contact with skin should be avoided, as iodine can cause skin irritation or burns. Proper protective equipment, such as gloves and goggles, should be worn during handling. Iodine balls should be stored in a cool, dry place, away from heat sources and incompatible substances.

B. Health Concerns:

Inhalation of iodine vapor or prolonged exposure to high concentrations of iodine can be harmful to health. It is important to work in a well-ventilated area when using iodine balls and to avoid inhaling the vapor. In case of accidental ingestion or exposure, medical attention should be sought immediately.

C. Disposal:

Proper disposal methods should be followed when discarding iodine balls. They should be handled as hazardous waste and disposed of in accordance with local regulations. It is essential to consult with appropriate authorities or waste management professionals for guidance on safe disposal practices.


CAS 7553-56-2, iodine balls, are versatile substances with applications in disinfection, antiseptic, and analytical fields. Their antimicrobial properties make them valuable for water treatment and wound care. It is important to handle iodine balls with caution, considering their chemical and health hazards. Adhering to proper handling, storage, and disposal practices is crucial to ensure safety. Further research and development continue to explore innovative uses and formulations of iodine balls, expanding their potential applications in diverse industries.

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