Open some food packaging bags, there are desiccant
packaging machines in the bags, what would you do when you see this desiccant? Most people throw it in the trash. Recently, a news of 'boy threw food desiccant into a water glass and his eyes were blown blind' attracted attention. is this real? Zhongshan Kenwei Electromechanical took you to verify, and found that the ordinary desiccant was put into the water, and there was no violent reaction such as splashing and bursting. An 8-year-old boy put the desiccant in a snack into a water glass and it exploded, splashing water into his eyes, causing the boy to go blind in one eye. Before the experiment, I went to the supermarket to buy two different kinds of food, and took out the desiccant in the bags, one big and one small. Afterwards, I found a clean mineral water bottle, poured in tap water, first poured a large amount of desiccant into the bottle, and quickly closed the lid. I found that small blisters appeared in the bottle, and the water slowly became cloudy without splashing. etc. phenomenon. Then, poured a small desiccant into a clean bottle, and also small blisters appeared in the bottle, and the water gradually became cloudy, but there was still no violent reaction such as splashing. Generally speaking, desiccant is a chemical preparation with strong adsorption capacity. If it is completely exposed to the air (relative humidity 80%-90%, temperature 25°C), it can absorb 35%-39% of water for 7 hours. The adsorption of desiccant is divided into physical adsorption and chemical adsorption. The desiccant of chemical adsorption includes the desiccant in common food packaging. Experts said that the lack of violent reaction may be because the amount of desiccant in the desiccant is too small to generate enough heat to cause the gas in the bottle to expand rapidly. In addition, even after unpacking the food, the water in the air has entered through the ventilation holes of the desiccant pack. When it is poured into the bottle, the desiccant has already been exposed to the air and reacted partially, so the reaction in the bottle will not be so much. severe. Experts said that judging from the extent of the child's injury, the water cup is not an airtight container. It is very likely that the desiccant composition is relatively pure, the chemical reaction is strong, and a large amount of heat is released, causing the desiccant composition to splash into the eyes, and the desiccant in the desiccant. The quicklime is also highly corrosive, which is extremely harmful to the eyes. 'If the reaction occurs in a closed container, a large amount of heat is generated and the gas is heated and expanded, and the container may be deformed or even ruptured.' Toys”, avoid contact with desiccant ingredients, and prevent children from accidental disassembly and accidental ingestion. If the desiccant package is damaged and the contents splashed into the eyes, please wash it with clean water in time. In case of accidental ingestion by a child, it should be taken orally or diluted with water in time. Do not induce vomiting, so as not to cause more burns, and send it to the hospital in time.
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