57-12-5

KCN and NaCN are white crystalline solids with a faint almond odor. Sodium cyanide also has a slight odor of hydrocyanic acid when damp. KCN: boiling point=1625℃ ; freezing/melting point=634℃ . NaCN: boiling point51496 C; freezing/melting point=564℃ . NFPA 704 M Hazard identification (KCN and NaCN): Health 3, flammability 0 , reactivity 1?. Soluble in water; slow decomposition releases highly toxic and flammable hydrogen cyanide gas.

ChEBI: A pseudohalide anion that is the conjugate base of hydrogen cyanide.

Aqueous solutions with a faint odor of bitter almonds. Toxic by skin absorption, by ingestion, and inhalation of the hydrogen cyanide from the decomposition of the material. Toxic oxides of nitrogen are produced in fires involving Methyl4-(cyanomethyl)benzoate. Obtain the technical name of the material from the shipping papers and contact CHEMTREC, 800-424-9300 for specific response information.

Water soluble. Inorganic cyanides react slowly with water to evolve gaseous hydrogen cyanide (HCN).

CYANIDE SOLUTIONS slowly evolve hydrogen cyanide, a flammable and poisonous gas. Acids cause the rapid evolution of HCN. Carbon dioxide from the air is sufficiently acidic to liberate HCN from solutions of cyanides. Incompatible with isocyanates, nitrides, and peroxides. Mayinitiate polymerization reactions of epoxides. May react exothermically with metal salts to produce explosive products or evolve gaseous hydrogen.

TOXIC; inhalation, ingestion or contact (skin, eyes) with vapors, dusts or substance may cause severe injury, burns or death. Reaction with water or moist air will release toxic, corrosive or flammable gases. Reaction with water may generate much heat that will increase the concentration of fumes in the air. Fire will produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution.

Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Vapors may accumulate in confined areas (basement, tanks, hopper/tank cars etc.). Substance will react with water (some violently), releasing corrosive and/or toxic gases and runoff. Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated or if contaminated with water.

Cellular asphyxiation, respiration inhibition, highly toxic; very poisonous.

Sodium and potassium cyanides are used primarily in the extraction of ores, electroplating, metal treatment, and various manufacturing processes. Iodine cyanide: Used generally for destroying all lower forms of life; in taxidermy to preserve insects, etc.

Move victim to fresh air. Call 911 or emergency medical service. Give artificial respiration if victim is not breathing. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; give artificial respira- tion with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. Administer oxygen if breathing is difficult. Remove and isolate contaminated clothing and shoes. In case of contact with substance, immediately flush skin or eyes with run- ning water for at least 20 minutes. For minor skin contact, avoid spreading material on unaffected skin. Keep victim warm and quiet. Effects of exposure (inhalation, ingestion, or skin contact) to substance may be delayed. Ensure that medical personnel are aware of the material(s) involved and take precautions to protect themselves. Medical obser- vation is recommended for 24 to 48 hours after breathing overexposure, as pulmonary edema may be delayed. As first aid for pulmonary edema, a doctor or authorized para- medic may consider administering a drug or other inhala- tion therapy. Note: Use amyl nitrate capsules if symptoms develop. All area employees should be trained regularly in emergency measures for cyanide poisoning and in CPR. A cyanide antidote kit should be kept in the immediate work area and MUST be rapidly available. Kit ingredients should be replaced every 1 2 years to ensure freshness. Persons trained in the use of this kit; oxygen use, and CPR must be quickly available.

UN1588 Cyanides, inorganic, solid, n.o.s., Hazard Class: 6.1; Labels: 6.1-Poisonous materials. UN1935

Soluble in water; slow decomposition releases highly toxic and flammable hydrogen cyanide gas. The aqueous solution of potassium and sodium cyanide are highly corrosive, and strong bases. KCN and NaCN react violently with acids, releasing highly flammable hydrogen cyanide. Potassium and sodium cyanide are incompatible with strong oxidizers (such as acids, acid salts; chlorates, nitrates), organic anhydrides; isocyanates, alkylene oxides; epichlorohydrin, aldehydes, alcohols, glycols, phenols, cre- sols, caprolactum. Attacks aluminum, copper, zinc in the presence of moisture. KCN and NaCN absorb moisture from the air forming a corrosive syrup.

KCN and NaCN are white crystalline solids with a faint almond odor. Sodium cyanide also has a slight odor of hydrocyanic acid when damp. KCN: Boilingpoint=1625℃; Freezing/Melting point=634℃. NaCN:Boiling point=1496℃; Freezing/Melting point=564℃.NFPA 704 M Hazard Identification (KCN and NaCN):Health 3, Flammability 0 [(4) gas], Reactivity 1 [(2) gas].Soluble in water.

Consult with environmental regulatory agencies for guidance on acceptable disposal practices. Generators of waste containing this contaminant (≥100 kg/mo) must conform to EPA regulations governing storage, transportation, treatment, and waste disposal. In accordance with 40CFR165, follow recommendations for the disposal of pesticides and pesticide containers. Must be disposed properly by following package label directions or by contacting your local or federal environmental control agency, or by contacting your regional EPA office. Add strong alkaline hypochlorite and react for 24 hours. Then flush to sewer with large volumes of water .

Hydrogen cyanide is generally produced at point of use. Production is covered under 40 CFR 415.420, applicability; description of the hydrogen cyanide production subcategory.

There is no evidence that exposure to cyanide causes cancer. USEPA lists cyanide as not classifiable with respect to its potential to cause cancer in humans. However, certain compounds included in the cyanide group may be human carcinogens. For example, acrylonitrile has been judged to be a probable human carcinogen. Details of these effects are provided in the appropriate sections where individual compounds are discussed.

Color Code—Blue: Health Hazard/Poison: Storein a secure poison location. Prior to working with cyanidesyou should be trained on its proper handling and storage. Aregulated, marked area should be established where thischemical is handled, used, or stored in compliance withOSHA Standard 1910.1045. Protect against physical damage. Store in cool dry place. Separate from other storageand protect from acids and oxidizing materials.