potassium cyanide 151-50-8 MSDS
Name: Potassium Cyanide, Reagent ACS (Crystals), 96+% (Titr.) Material Safety Data Sheet
Synonym: Cyanide of Potassium; Potassium Salt of Hydrocyanic Acid.
CAS: 151-50-8
Section 1 - Chemical Product MSDS Name: Potassium Cyanide, Reagent ACS (Crystals), 96+% (Titr.) Material Safety Data Sheet
Synonym: Cyanide of Potassium; Potassium Salt of Hydrocyanic Acid.
SECTION 2 - COMPOSITION, INFORMATION ON INGREDIENTS
CAS# Chemical Name content EINECS#
151-50-8 POTASSIUM CYANIDE 96% 205-792-3
Hazard Symbols: T+
Risk Phrases: 26/27/28 32
SECTION 3 - HAZARDS IDENTIFICATION EMERGENCY OVERVIEW Very toxic by inhalation, in contact with skin and if swallowed. Contact with acids liberates very toxic gas. Potential Health Effects
Eye:
Contact with eyes may cause severe irritation, and possible eye burns.
Skin:
May be absorbed through the skin in harmful amounts. Contact with skin causes irritation and possible burns, especially if the skin is wet or moist. If absorbed, causes symptoms similar to those of ingestion. Skin absorption may cause unconsciousness. Absorption into the body may cause cyanosis (bluish discoloration of skin due to deficient oxygenation of the blood).
Ingestion:
May be fatal if swallowed. Causes gastrointestinal tract burns. May cause tissue anoxia, characterized by weakness, headache, dizziness, confusion, cyanosis (bluish skin due to deficient oxygenation of the blood), weak and irregular heart beat, collapse, unconsciousness, convulsions, coma and death. Contains cyanide. Human fatalities have been reported from acute poisoning. Large doses of cyanide may result in suddden loss of consciousness and prompt death; small doses will prolong the above symptoms 1 to 2 hours.
Inhalation:
Inhalation of high concentrations may cause central nervous system effects characterized by nausea, headache, dizziness, unconsciousness and coma. Causes respiratory tract irritation. May cause effects similar to those described for ingestion. Contains cyanide. Inhalation may result in symptoms similar to cyanide poisoning which include tachypnea, hyperpnea (abnormally rapid or deep breathing), and dyspnea (labored breathing) followed rapidly by respiratory depression. Pulmonary edema may occur.
Chronic:
Prolonged or repeated skin contact may cause dermatitis. Prolonged or repeated contact may cause skin necrosis and/or ulceration of the skin. Chronic exposure to cyanide solutions may lead to the development of a "cyanide" rash, characterized by itching, and by macular, papular, and vesicular eruptions, and may be accompanied by secondary infections.
SECTION 4 - FIRST AID MEASURES
Eyes:
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately. Treat patient as for inhalation.
Skin:
Get medical aid immediately. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Discard contaminated clothing in a manner which limits further exposure. SPEEDY ACTION IS CRITICAL! Treat patient as for inhalation.
Ingestion:
Get medical aid immediately. SPEED IS ESSENTIAL. A DOCTOR MUST BE NOTIFIED AT ONCE. Do not give anything by mouth. Treat patient as for inhalation.
Inhalation:
Remove from exposure to fresh air immediately. Do NOT use mouth-to-mouth resuscitation. Keep warm and at rest. Administer oxygen. If breathing has ceased apply artificial respiration using oxygen and a suitable mechanical device such as a bag and a mask. SPEED IS ESSENTIAL, OBTAIN MEDICAL AID IMMEDIATELY.
Notes to Physician:
Prompt action is essential in all cases of contact.
Antidote:
Always have a cyanide antidote kit on hand when working with cyanide compounds. Get medical advice to use.
SECTION 5 - FIRE FIGHTING MEASURES
General Information:
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated or if contaminated with water. Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.
Extinguishing Media:
Substance is noncombustible; use agent most appropriate to extinguish surrounding fire. Do NOT use carbon dioxide.
SECTION 6 - ACCIDENTAL RELEASE MEASURES
General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks:
Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, observing precautions in the Protective Equipment section. Avoid generating dusty conditions. Decontaminate trace cyanide in the spill area with a strong sodium or calcium hypochlorite solution and flush waste to a holding area for potassium removal.
SECTION 7 - HANDLING and STORAGE
Handling:
Wash thoroughly after handling. Use with adequate ventilation. Minimize dust generation and accumulation. Do not get in eyes, on skin, or on clothing. Do not ingest or inhale. Wash clothing before reuse.
Storage:
Store in a tightly closed container. Keep from contact with oxidizing materials. Store in a cool, dry, well-ventilated area away from incompatible substances. Keep away from acids.
SECTION 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION
Engineering Controls:
Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Use adequate general or local exhaust ventilation to keep airborne concentrations below the permissible exposure limits. Personal Protective Equipment
Eyes:
Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166.
Skin:
Wear appropriate protective gloves to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to prevent skin exposure.
Respirators:
A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.
SECTION 9 - PHYSICAL AND CHEMICAL PROPERTIES
Physical State: Solid
Appearance: white
Odor: almond-like
pH: 11 (0.1N)
Vapor Pressure: 0 mm Hg
Viscosity: Not available.
Boiling Point: Not available.
Freezing/Melting Point: 1173 deg F
Autoignition Temperature: Not applicable.
Flash Point: Not applicable.
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature: Not available.
Solubility in water: Soluble in water
Specific Gravity/Density: 1.52
Molecular Formula: KCN
Molecular Weight: 65.105
SECTION 10 - STABILITY AND REACTIVITY
Chemical Stability:
Stable.
Conditions to Avoid:
Incompatible materials, moisture, acids, excess heat.
Incompatibilities with Other Materials:
Violent reactions can occur with oxidizing agents such as nitric acid, nitrates, and peroxides. Contact with acids liberates extremely toxic and flammable hydrogen cyanide gas. Hydrogen cyanide may form by a reaction with carbon dioxide and moisture when this material is in prolonged contact with air in a closed system.
Hazardous Decomposition Products:
Hydrogen cyanide, nitrogen oxides.
Hazardous Polymerization: Has not been reported.
SECTION 11 - TOXICOLOGICAL INFORMATION RTECS#: CAS# 151-50-8: TS8750000
LD50/LC50:
CAS# 151-50-8: Oral, mouse: LD50 = 8500 ug/kg; Oral, rabbit: LD50 = 5 mg/kg; Oral, rat: LD50 = 5 mg/kg.
Carcinogenicity:
POTASSIUM CYANIDE - Not listed by ACGIH, IARC, NIOSH, NTP, or OSHA.
Other:
See actual entry in RTECS for complete information.
SECTION 12 - ECOLOGICAL INFORMATION Other For more information, see "HANDBOOK OF ENVIRONMENTAL FATE AND EXPOSURE DATA."
SECTION 13 - DISPOSAL CONSIDERATIONS Dispose of in a manner consistent with federal, state, and local regulations.
SECTION 14 - TRANSPORT INFORMATION IATA
Shipping Name: POTASSIUM CYANIDE
Hazard Class: 6.1
UN Number: 1680
Packing Group: I IMO
Shipping Name: POTASSIUM CYANIDE, SOLID
Hazard Class: 6.1
UN Number: 1680
Packing Group: I RID/ADR
Shipping Name: POTASSIUM CYANIDE
Dangerous Goods Code: 6.1(41A)
UN Number: 1680
SECTION 15 - REGULATORY INFORMATION European/International Regulations European Labeling in Accordance with EC Directives
Hazard Symbols: T+
Risk Phrases:
R 26/27/28 Very toxic by inhalation, in contact with skin and if swallowed. R 32 Contact with acids liberates very toxic gas.
Safety Phrases:
S 1/2 Keep locked up and out of reach of children. S 7 Keep container tightly closed. S 24/25 Avoid contact with skin and eyes. S 26 In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S 28B After contact with skin, wash immediately with plenty of water and soap. S 29 Do not empty into drains. S 45 In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible). WGK (Water Danger/Protection) CAS# 151-50-8: 3 United Kingdom Occupational Exposure Limits CAS# 151-50-8: OES-United Kingdom, TWA (listed as undefined ): as CN: 5 mg/m3 TWA; (does not include hydrogen cyanide, cyanogen or cyanogen chl Canada CAS# 151-50-8 is listed on Canada's DSL List. CAS# 151-50-8 is not listed on Canada's Ingredient Disclosure List. Exposure Limits CAS# 151-50-8: OEL-AUSTRALIA:TWA 5 mg/m3;Skin OEL-DENMARK:TWA 5 mg/m3;Skin OEL-SWITZERLAND:TWA 5 mg/m3;STEL 10 mg/m3;Skin OEL IN BULGARIA, COLOMBIA, JORDAN, KOREA check ACGIH TLV OEL IN NEW ZEALAND, SINGAPORE, VIETNAM check ACGI TLV US FEDERAL TSCA CAS# 151-50-8 is listed on the TSCA inventory.
SECTION 16 - ADDITIONAL INFORMATION
MSDS Creation Date: 9/02/1997 Revision #3 Date: 8/02/2000 The information above is believed to be accurate and represents the best information currently available to us. However, we make no warranty of merchantability or any other warranty, express or implied, with respect to such information, and we assume no liability resulting from its use. Users should make their own investigations to determine the suitability of the information for their particular purposes. In no way shall the company be liable for any claims, losses, or damages of any third party or for lost profits or any special, indirect, incidental, consequential or exemplary damages, howsoever arising, even if the company has been advised of the possibility of such damages.

SECTION 16 - ADDITIONAL INFORMATION
N/A

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