
Sodium Cyanide
Molecular Weight: 49.01
Appearance: At room temperature, it appears as white cubic crystals, granules, or powder; industrial-grade products often appear grayish-white or slightly yellow. It possesses a faint odor resembling bitter almonds.
Solubility: It is extremely soluble in water, forming a strongly alkaline aqueous solution. It is soluble in liquid ammonia and methanol, slightly soluble in ethanol, and insoluble in benzene and diethyl ether.
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Sodium Cyanide
Molecular Formula: NaCN; Molecular Weight: 49.01
Appearance: At room temperature, it appears as white cubic crystals, granules, or powder; industrial-grade products often appear grayish-white or slightly yellow. It possesses a faint odor resembling bitter almonds.
Solubility: It is extremely soluble in water, forming a strongly alkaline aqueous solution. It is soluble in liquid ammonia and methanol, slightly soluble in ethanol, and insoluble in benzene and diethyl ether.
Stability: It is stable under dry conditions at room temperature. However, upon contact with acids or moist air, it decomposes very readily, releasing highly toxic hydrogen cyanide (HCN) gas. When left standing for prolonged periods or heated, its aqueous solution undergoes slow hydrolysis to form sodium formate and ammonia. It reacts violently with chlorine, bromine, iodine, and strong oxidizing agents, posing a significant hazard.
Key Physical Properties: Melting Point: 563.7°C; Boiling Point: 1496°C; Density: 1.595 g/cm³.
Toxicity: It is highly toxic-classified as a strictly controlled, hazardous chemical. Ingestion, skin contact, or inhalation can all be fatal.

Hazard Characteristics, Safe Storage, and Transport
Extreme Danger: Highly toxic and acutely poisonous; inhalation, ingestion, or absorption through the skin can be rapidly fatal. Upon contact with acids, it immediately releases highly toxic hydrogen cyanide gas.
Incompatible Materials: Strictly prohibited from being stored or transported together with acids, oxidizers, foodstuffs, or animal feed.
Storage: Must be kept in a dedicated warehouse for highly toxic chemicals, under a "dual-person, dual-lock" security system within a designated cabinet. Storage conditions require a dry, sealed environment protected from moisture and light; the floor must be impermeable to prevent seepage and leakage./p>
Transport: Must be transported in vehicles dedicated exclusively to highly toxic hazardous materials, accompanied by a designated escort. Strict adherence to national regulations governing the road transport of highly toxic chemicals is mandatory. Transport must be conducted in a manner that strictly prevents exposure to rain, physical damage, or leakage.
Emergency Response: In the event of a leak, direct physical contact is strictly prohibited. Detoxification of the spilled material should be performed using bleaching powder, sodium hypochlorite, or alkaline solutions to neutralize the cyanide. In cases of poisoning, immediate professional medical attention and the administration of specific antidotes are required.
Special Notice: Sodium cyanide is classified as a strictly controlled, highly toxic chemical under national regulations. Its production, commercial distribution, usage, storage, and transport all require the acquisition of specific, specialized permits. The unauthorized private purchase, storage, or use of this substance is strictly prohibited.
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