Paint knowledge: cyanide is not mysterious

Core tip: after the explosion accident of the dangerous goods warehouse of Tianjin port on August 12, people from all walks of life can be described as "talking about cyanogen color change" They think that cyanide is far away from us, and they think cyanide is mysterious Is cyanide really mysterious? Let's get to know next What is cyanide? Cyanide refers to compounds with cyanogen group (CN), generally divided into inorganic cyanide and organic cyanide Generally known cyanide is inorganic cyanide, commonly potassium cyanide and sodium cyanide How toxic is cyanide? As a highly toxic chemical, it can pass through human skin Paint knowledge how about Akzo Nobel Powder Coating Recommended introduction: powder coating is a kind of coating with different form from general coating, which is in powder form It is a new type of coating, because of its own advantages and more and more known by people Let's introduce Akzo Nobel Powder coating Akzo Nobel Powder coating is a cost-effective coating solution, which can be applied to different kinds of products After the treatment of static electricity and fire baking, a tough and durable coating surface will be formed, with the least impact on the environment Since the introduction of this technology, powder coating has been able to continue to maintain the Home of coatings news: after the explosion accident of the dangerous goods warehouse of Tianjin port on August 12, people from all walks of life can be described as "talking about cyanogen color change" They think cyanide is far away from us, they think cyanide is mysterious Is cyanide really mysterious? Let's get to know next What is cyanide? Cyanide refers to compounds with cyanogen group (CN), generally divided into inorganic cyanide and organic cyanide Generally known cyanide is inorganic cyanide, commonly potassium cyanide and sodium cyanide How toxic is cyanide? As a highly toxic chemical, it can be rapidly absorbed through human skin, eyes or gastrointestinal tract It is less than 35 mg / kg, and 150-250 Mg can cause sudden death in adults Although cyanide is a highly toxic chemical, it can prevent people from eating it by mistake and the skin from contacting it for a long time due to its unique smell Even if the skin is in direct contact with cyanide, wash it off with water immediately If you take sodium cyanide by mistake, you can directly induce vomiting and seek medical treatment Therefore, hydrocyanic acid poisoning also has its specific conditions and great limitations In addition, cyanide is not toxic if you eat it As long as it is within the content range, there will be no problem Please refer to the standards of various countries for cyanide in food and drinking water: is cyanide toxic? Although cyanide is toxic, there are many ways to give first aid for poisoning, and there are special drugs Therefore, cyanide poisoning does not mean death In addition, the human body has a strong detoxification function to CN -, and cyanide is a non accumulating poison When a small amount of exogenous cyanogen which does not produce toxic dose enters the body, it can be rapidly transformed into non-toxic or low toxic substances and discharged from the body What is cyanide used for? Cyanide is mainly used for gold extraction, electroplating and chemical synthesis Cyanide can be used to synthesize common drugs and food additives, such as penicillin, vitamin B6, folic acid, guanine, caffeine, etc.; common pesticides, such as glyphosate, fenvalerate, paraquat, atrazine, rice blast, etc.; common dyes or pigments, such as indigo, Hualan, fluorescent whitening agent, etc.; common amino acids: methionine, alanine, glycine, etc How does cyanide come from? It is mostly synthesized by light oil or natural gas in industry, and can also be by-product of acrylonitrile, but it is not industrial production that can produce cyanide, which is also widely existed in nature For example, cyanide in the plant exists in the seeds of bitter almond, peach kernel, loquat kernel, flaxseed, bayberry kernel, plum kernel, cherry kernel, apple kernel, etc the content of cyanide in the plant: bitter almond: 3.71g/100g, plum kernel, loquat kernel, cherry kernel, bayberry kernel, white fruit: 2.67 μ g / 100g, plum kernel: 4.33 μ g / 100g, broad bean: 300 μ g / 100g, white plum: 11.6mg/100g, Qingpi Mei: 10.18mg/100g, flaxseed: 38g / 100g, ginkgo seed: 523 μ g / 100g, cassava leaf: 20.27-28.48mg/100g, cassava block: 4.68-9.26mg/100g, sorghum leaf and corn seedling content in 38-70mg / 100g Cyanide is also commonly found in the soil and decreases with the increase of soil depth, with the content of 0.003-0.130mg/kg Cyanide in natural soil mainly comes from soil humus Humus is a kind of complex organic compounds, whose core is polymerized by polyphenols and contains a certain amount of nitrogen compounds Under the action of soil microorganism, cyanogen and phenol can be produced, so the background content of cyanogen in soil is closely related to the content of organic matter Under what circumstances will cyanide enter the human body? Breathing, drinking water, contacting with soil or eating food containing cyanide, smoking or inhaling smoke in case of fire are the main ways for cyanide to enter human body In addition, when inhaling the air containing cyanide near the hazardous waste treatment plant or eating food containing cyanide naturally, cyanide may also enter our body How to degrade cyanide? Natural water has a strong self purification effect on cyanide When a small amount of cyanide enters the water, the microorganisms in the water can destroy the cyanide of low concentration, convert the cyanide into carbonate and ammonia through biological oxidation, make it become non-toxic substance, and consume part of dissolved oxygen in the water Therefore, the self-cleaning process of cyanide in surface water is quite rapid and will not accumulate Because nature has a strong purification effect on cyanide pollution, generally speaking, exogenous cyanide is not easy to accumulate in the environment and the body Only under certain conditions (accident discharge, high concentration continuous pollution), when the amount of cyanogen pollution exceeds the purification capacity of the environment, can it remain and accumulate in the environment, thus constituting potential harm to human and biology However, these cyanides are easy to be degraded For example, when the sodium cyanide solution is above 50 ℃, it will undergo irreversible hydrolysis reaction and generate sodium formate and ammonia The higher the temperature, the faster the hydrolysis rate This property is often used to treat cyanide containing wastewater in industry In addition, the high concentration cyanide can be degraded to a safe concentration within 1 hour with 5 times the amount of chlorine or hydrogen peroxide, so the cyanide is very easy to be degraded or eliminated Conclusion: cyanide is not mysterious It's not far away from us and it's around us It's always with our life Only when we know it correctly can we not feel so terrible Only when we know it well can we prevent it [focus on WeChat official account "paint net"; pay attention to surprises, scan code to see if your husband is selling paint.. "Paint group: 92525666] coatings house is focused on coatings, diatom mud, paint and coatings, coating technology, fire retardant coatings news information and coatings, diatom mud, paint and coating, coating technology, fire retardant coatings decoration knowledge and decoration effect map.