Overview
Medium block dry ice is a versatile form of solid carbon dioxide, commonly used in industrial and commercial applications. Unlike regular ice, it sublimates directly from a solid to a gas, leaving no residue. This property makes it ideal for cooling and cleaning processes where moisture is a concern. Dry ice is produced by compressing and cooling gaseous CO2, resulting in dense, opaque blocks. Medium blocks are typically sized for easy handling and transport, making them a popular choice for businesses requiring consistent cooling or cleaning performance.
Physical and Chemical Properties
Medium block dry ice has a density of approximately 1.56 g/cm³ and sublimates at -78.5°C, converting directly into CO2 gas. This sublimation process is highly endothermic, absorbing significant heat from the surroundings, which makes it an effective cooling agent. The material is non-toxic and non-flammable, but it can cause frostbite upon direct contact with skin. It is also heavier than air, which means CO2 gas can accumulate in low-lying areas, posing an asphyxiation risk in poorly ventilated spaces. Proper handling and storage are essential to mitigate these risks.
Main Applications
Medium block dry ice is widely used in industries such as food processing, where it preserves perishable goods during transport. Its ability to maintain low temperatures without leaving moisture makes it ideal for shipping frozen foods and pharmaceuticals. In industrial settings, dry ice is used for blast cleaning, a process that removes contaminants from surfaces without damaging the underlying material. Additionally, it is popular in entertainment for creating fog effects due to the dense CO2 vapor produced during sublimation.
Safety and Storage
Handling medium block dry ice requires insulated gloves and protective clothing to prevent frostbite. It should always be stored in well-ventilated areas to avoid CO2 gas buildup, which can displace oxygen and cause asphyxiation. Storage containers must be insulated but not airtight, as sublimation produces gas that can build pressure. For long-term storage, specialized freezers or insulated boxes are recommended. Always follow supplier guidelines for safe handling and disposal.
B2B Procurement Guide
When procuring medium block dry ice, consider factors such as purity, block size, and delivery logistics. Food-grade applications require high-purity CO2, while industrial uses may tolerate lower grades. Verify supplier certifications and ask about storage recommendations. Prices vary based on quantity and location, with bulk purchases often offering cost savings. Ensure the supplier can meet your delivery schedule, as dry ice sublimates over time. Request samples if possible to evaluate quality before committing to large orders.
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