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This post was last edited by WeiSishi07 on 2020-12-9 at 17:30. WeiWei will give everyone some information on a hazardous chemical: sodium cyanide. Do you know anything about it? Let’s take a look together. I. Introduction to sodium cyanide: It belongs to the cubic crystal system, appears as white crystalline particles or powder, is prone to deliquescence, and has a faint bitter almond odor. Highly toxic; even minute amounts inhaled, ingested, or absorbed through skin wounds can be fatal. Its chemical formula is NaCN; the melting point is 563.7°C, and the boiling point is 1496°C. It is soluble in water and readily hydrolyzes to produce hydrogen cyanide; its aqueous solution is highly alkaline. It is an important basic chemical raw material used in various chemical syntheses, electroplating, metallurgy, as well as in the production of pharmaceuticals, pesticides, and for metal treatment. Chelating agents, masking agents. http://p9.itc.cn/images01/20201209/38873c8db2534b55b9435c2bd7ffa26f.jpeg II. Physical properties: It belongs to the cubic crystal system; it appears as white crystalline particles or powder, is prone to deliquescence, and has a slight bitter almond odor. It is soluble in water, ammonia, ethanol, and methanol. III. Ensure strict sealing during operations, and provide adequate local exhaust ventilation as well as general ventilation. Make the operations as mechanized and automated as possible. Operators must receive specialized training and strictly adhere to operating procedures. It is recommended that operators wear hooded electric-powered, air-supplied, filter-type dust-resistant respirators, full-body adhesive gas-proof suits, and rubber gloves. Avoid generating dust. Avoid contact with oxidizers and acids. Handle with care during transportation to prevent damage to the packaging and containers. Equipped with leak emergency response equipment. Empty containers may still contain harmful substances. IV. Health hazards: Inhibits respiratory enzymes, causing cellular asphyxia. Acute poisoning can be caused by inhalation, oral ingestion, or transdermal absorption. Oral administration of 50–100 mg can cause sudden death. Clinically, non-sudden deaths are divided into 4 stages: the prodromal stage is characterized by mucosal irritation, increased and deepened breathing, fatigue, and headache ； Oral administration can cause numbness at the tip of the tongue and in the mouth. During the dyspnea phase, there is difficulty breathing, elevated blood pressure, and bright red skin and mucous membranes. During the convulsive phase, there are seizures, coma, and respiratory failure. During the paralysis phase, all muscles in the body become relaxed, respiration and heartbeat cease, leading to death. Prolonged exposure to small amounts of cyanide leads to neurasthenic syndrome as well as irritation of the eyes and upper respiratory tract. It can cause rashes. V. Emergency response: Isolate the area contaminated by the leak and restrict access. It is recommended that emergency responders wear dust masks (full-face masks) and protective clothing. Do not come into direct contact with the spill. Minor leakage: Avoid creating dust; collect it with a clean shovel and place it in a dry, clean, covered container. Large spill: Cover with plastic sheeting or canvas. Then it is collected and recycled or taken to a waste disposal facility for disposal. VI. First aid measures: In case of skin contact, immediately remove the contaminated clothing and rinse the affected area thoroughly with running water or a 5% sodium thiosulfate solution for at least 20 minutes. Seek medical attention. Eye contact: Immediately lift the eyelids and rinse thoroughly with plenty of flowing water or saline for at least 15 minutes. Seek medical attention. Inhalation: Quickly move to a place with fresh air. Keep the airway clear. If there is difficulty breathing, administer oxygen. When breathing and heartbeat stop, immediately perform artificial respiration (do not use mouth-to-mouth) and chest compressions. If isopentyl nitrite is inhaled, seek medical attention. Ingestion: Drink plenty of warm water and induce vomiting. Gastric lavage should be performed using a 1:5000 potassium permanganate solution or a 5% sodium thiosulfate solution. Seek medical attention. VII. Fire-fighting measures: Extinguishing method: This product is not flammable. In case of a fire, efforts should be made to save the goods and prevent packaging damage that could cause environmental pollution. Firefighters must wear gas masks and full protective firefighting suits to extinguish the fire from the upwind side. Extinguishing agents: dry powder, sand. The use of carbon dioxide and acid-base fire extinguishants is prohibited. VIII. Storage Instructions: Store in a cool, dry, and well-ventilated warehouse. Keep away from flames and heat sources. The relative humidity in the warehouse should not exceed 80%. The package is sealed. It should be stored separately from oxidizers, acids, and food chemicals; mixed storage is strictly prohibited. The storage area should be equipped with suitable materials to contain leaks. The \"five pairs\" management system for highly toxic substances must be strictly implemented. IX. Packaging method for transportation information: Place it in a plastic bag with the opening sealed, then put it into a sturdy steel tank with a wall thickness of not less than 0.75 millimeters; the tank lid must be tightly secured, and the net weight of each tank is 50 kilograms ； Ordinary wooden box outside threaded-mouth glass bottles, iron-cap pressed-mouth glass bottles, plastic bottles, or metal drums/tanks ； But a plastic bag must be added outside the glass bottle. Transportation precautions: When transporting by rail, it is necessary to follow strictly the loading table for dangerous goods specified in the Ministry of Railways’ \"Rules for the Transport of Dangerous Goods\". Before transportation, check whether the packaging containers are intact and properly sealed; during transport, ensure that the containers do not leak, collapse, fall, or get damaged. Mixing with acids, oxidizers, foods, and food additives is strictly prohibited. Transport vehicles should be equipped with emergency equipment for dealing with leaks during transportation. During transportation, it should be protected from exposure to sunlight and rain, as well as high temperatures. When transporting by road, it is necessary to follow the designated routes, and stopping in residential areas or densely populated zones is prohibited. http://p9.itc.cn/images01/20201209/ccfd7590cede4b09b0312b3c05c63b88.jpeg That’s all the basic information about sodium cyanide; those who need it should read it carefully. This article is reproduced from China Hazardous Chemicals Logistics Network.