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Substance Name: Calcium Cyanide
Chemical Formula: Ca(CN)2
Synonyms: Black cyanide, Cyanogen calcium salt
Physical Form: Solid, usually available as grey, powdery flakes or granules
Common Use: Metal extraction, especially gold mining, fumigation, chemical manufacturing
Hazard Classification: Highly toxic, extremely hazardous upon inhalation, ingestion, or skin contact
Physical Dangers: Reacts with acids, moisture, and water to create poisonous hydrogen cyanide gas
Health Hazards: Symptoms of exposure include headache, dizziness, weakness, shortness of breath, nausea, and convulsions. Exposure can cause rapid loss of consciousness and death.
Symbols: Toxic (T), Dangerous for the environment (N)
Main Ingredient: Calcium Cyanide, Ca(CN)2 (typically above 95%)
Impurities: May contain traces of sodium cyanide, calcium hydroxide, or calcium carbonate due to manufacturing process
Inhalation: Remove person to fresh air immediately, administer oxygen if breathing is difficult, seek urgent medical attention, never delay
Skin Contact: Remove contaminated clothing, wash skin thoroughly with soap and water; emergency treatment with specific antidotes like amyl nitrite, sodium thiosulfate, or sodium nitrite is critical
Eye Contact: Rinse eyes with plenty of water for at least 15 minutes, immediate medical help is crucial
Ingestion: Do not induce vomiting, medical intervention should take place at once, antidotes must be given promptly if cyanide poisoning is suspected
Suitable Extinguishing Media: Use dry chemical powder or foam, carbon dioxide works in some cases but avoid water as cyanide can react and release hydrogen cyanide gas
Special Hazards: Burning calcium cyanide provides toxic gases; responders face significant poisoning risk if they lack appropriate protective gear
Protective Equipment: Firefighters should use full-face self-contained breathing apparatus and chemical protective clothing
Personal Precautions: Evacuate area quickly, prevent unprotected people entering
Environmental Precautions: Block contamination of waterways, stormwater drains, and soil to avoid food chain hazards
Cleanup Methods: Scoop and remove with non-metallic tools, then store waste securely for disposal; always ventilate the affected zone
Protection: Only trained personnel with appropriate respirators and gloves should handle spills
Handling: Work in ventilated spaces, always avoid breathing dust or vapors, never eat or drink around the chemical
Storage: Keep in tightly sealed, labeled containers far away from any acids, water, or foodstuffs; store in a cool, dry, secure place equipped with warning signage
Special Guidance: Maintain access to emergency equipment and antidote kits at all times
Workplace Controls: Use closed handling systems, local exhaust ventilation, and continuous air monitoring for cyanide gas
Personal Protective Equipment: Chemical-resistant gloves, full face shield or goggles, disposable protective suits, and certified respirators (air-fed or supplied-air types)
Hygiene: Wash hands thoroughly before eating, smoking, or leaving work; never re-use contaminated personal protective equipment
Appearance: Grey-white flakes or powder
Odor: Faint almond-like smell may be present due to hydrogen cyanide traces
Solubility: Reacts slowly with water to produce soluble, toxic solutions
Melting Point: Decomposes above 300°C
pH: Alkaline in solution
Stability: Stable only in dry state, rapid decomposition if exposed to moisture
Reactive Conditions: Acids, water, even mildly humid air can trigger violent reactions
Hazardous Products: Releases hydrogen cyanide gas under improper storage or handling; long-term storage can also create unstable byproducts
Acute Effects: Exposure by any route (inhalation, ingestion, contact) leads to cyanide poisoning, which blocks oxygen use in cells
LD50 (oral, rat): Roughly 6 mg/kg for cyanide ions; fatality rates are high if antidotes are delayed
Chronic Effects: Prolonged low-level exposure may cause nerve damage or thyroid issues; survivors of acute poisoning can suffer long-term neurological problems
Early Signs: Confusion, difficulty breathing, tingling extremities, nausea
Environmental Risks: Extremely poisonous to aquatic life, lethal at even low concentrations, bioaccumulates in the food chain
Degradation: Slowly breaks down under heat and sunlight, but remains hazardous for extended periods in water and soil
Spill Consequences: Contaminated environments require expert remediation, affected wildlife seldom survives
Waste Methods: Only chemical incineration or controlled chemical breakdown by trained professionals suits this product; neutralization requires precision and adequate safety equipment
Prohibited Actions: Never dispose in regular trash, surface drainage, or sewer systems
Container Disposal: Empty containers still contain toxic residues and need the same precautions as full ones
Classification: Highly regulated, commonly listed as hazardous class 6.1 (toxic substances) under transport laws
Packaging: Uses strong, sealed corrosion-resistant containers, always carries clear hazard labeling
Carriage: Only licensed carriers with emergency protocols in place should transport this material; transport routes avoid populated areas where possible
Incident Response: Spills during transit require immediate notification of authorities and specialized containment crews
Legal Restrictions: Use, storage, and disposal closely controlled by national chemical safety agencies and international treaties
Worker Protections: Strict workplace exposure limits enforced in most countries; mandatory training and medical surveillance for employees with potential exposure
Reporting: All quantities above strict minimums must be documented and reported to appropriate authorities
