Alkaline lime, also known as sodium lime, is white or beige powder, loose and porous, and is a mixture of calcium oxide, water, sodium hydroxide and potassium hydroxide.
Alkaline lime is mainly used as a desiccant (in which calcium oxide plays a drying role), and can be used to dry neutral gases such as oxygen and alkaline gas ammonia. At the same time, it can also be used to absorb acidic gases such as carbon dioxide and sulfur dioxide.
Extended data:
Because sodium hydroxide can react with the most commonly used glass instruments in the laboratory (the main component is silicon dioxide) to corrode the instruments. A small amount of methane produced in the laboratory can be heated with alkali lime and sodium acetate to produce sodium carbonate and methane.
The harm of sodium and calcium to human body;
It can dissolve protein and has strong irritation and corrosiveness. Dropping 0.02% solution into rabbit eyes can cause corneal epithelial injury. LD50: 40 mg/kg intraperitoneal injection in mice and 500 mg/kg oral low density lipoprotein in rabbits.
Dust irritates eyes and respiratory tract and corrodes nasal septum; Splash on skin, especially mucous membrane, can produce soft scab, penetrate into deep tissue, and leave scars after burn; Splash into the eye will not only damage the cornea, but also damage the deep tissue of the eye, and even lead to blindness in severe cases.
Miseating can cause digestive tract burns, colic, mucosal erosion, hematemesis of stomach contents, bloody diarrhea, sometimes hoarseness, dysphagia, shock, perforation of digestive tract, and gastrointestinal stenosis in the later stage.
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