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Date of Issue : Mar 2002 1. IDENTIFICATION
General Product Name : SODIUM CYANIDE Other Names : HYDROCYANIC ACID SODIUM SALT CYANOGRAN UN No. : 1689 Dangerous Goods Class : 6.1 Subsidiary Risk : None Allocated Hazchem Code : 2X Pack Group : I EPG : 40 Poisons Schedule : 7 Uses : Extraction of gold and silver from ores, electroplating, heat treatment of metals (case-hardening), making hydrogen cyanide, insecticide, cleaning metals, fumigation, manufacture of dyes and pigments, nylon intermediates, chelating compounds, ore flotation.
1.1 Physical Description / Properties
Appearance : White deliquescent briquettes with almond odour. Formula : NaCN Boiling Point : 1496 deg C Melting Point : 564 deg C Vapour Pressure : 1 mm Hg (1 atmosphere) Specific Gravity : 1.61 (water = 1) Flash Point : N/A pH : 11-12 (20 g/L) Solubility in water : Solub g/l (25 deg C) Flammability Limits (as percentage volume in air) Lower Explosion Limit : N/A Upper Explosion Limit : N/A 1.2 Other Properties
Solubility in water = 58% @ 20 deg C. Soluble in ammonia and slightly soluble in alcohol. 1.3 Ingredients
2. HEALTH HAZARD INFORMATION
2.1 Health Effects - Acute Swallowed
Very toxic if swallowed. May cause burns, rash, nausea, chest pain, irregular heartbeat, headache, blindness, bluish skin colour, suffocation, lung congestion, paralysis, convulsions, dizziness, coma and death. Eye
Same effects reported in short term ingestion, irritation (possibly severe), blurred vision, suffocation and death. Skin
May cause burns, suffocation. May cause rash, itching, nausea, headache and dizziness. Inhaled
May cause irritation (possibly severe), suffocation. May cause nausea, headache, dizziness. Poisoning has an effect on the central nervous system. 2.2 Health Effects - Chronic
May cause a rash to develop. May cause skin eruptions, headaches, nausea, dizziness and may cause an allergic systemic reaction.
2.3 First Aid
Swallowed
Contact local Poison Control Centre or physican immediately. Never make an unconscious person vomit or drink fluids. When vomiting occurs, keep head lower than hips to help prevent aspiration. If person is unconscious, turn head to side. Get medical attention immedately.
Eye
Wash eyes immediately with large amounts of water, occasionally lifting upper and lower eyelids, until no evidence of chemical remains. Continue irrigating with normal saline until ready to transport to hospital. Cover with sterile bandages. Get medical attention immediately.
Skin
Remove contaminated clothing, jewelry and shoes immediately. Wash with soap or mild detergent and large amounts of water until no evidence of chemical remains (at least 15-20 minutes). Get medical attention if needed.
Inhaled
When safe to enter area, remove from exposure. Use a bag valve mask or similar device to perform artificial respiration (rescue breathing) if needed. Get medical attention immediately.
First Aid Facilities
Ensure an eye bath and safety shower are available and ready for use.
2.5 Advice to Doctor
Antidote : Amyl nitrite, Inhalation; sodium nitrite. Intravenous; sodium thiosulphate, Infusion; oxygen. Consider amyl nitrite inhalation, 1 ampoule (0.2 ml) every 5 minutes, and oxygen. For ingestion, consider gastric lavage. Consider oxygen.
2.6 Toxicity Data
Ocular LD50 = 5,048 ug/kg (rabbit) Oral TDLo = 714 ug/kg (man) Oral LDLo = 6,557 ug/kg (man) LDLo = 2,857 (dog) Intravenous LDLo = 1,300 ug/kg (dog) Intraperitoneal LD50 = 4,300 ug/kg (rat) Intraperitoneal LD50 = 5,881 ug/kg (mouse) Intramuscular LD50 = 1,666 ug/kg (rabbit) LD50 = 10 mg/kg (route-mouse, unreported) LD50 = 2,206 ug/kg (route-man, unreported) Oral LD50 = 8 mg/kg (mammal) Mutagenic data = available. Reproductive data = available.
3. PRECAUTIONS FOR USE
3.1 Exposure Standards
Cyanides (as CN) = 5 mg/m3 OSHA TWA; 5 mg/kg ACGIH TWA (Skin); 5 mg/mg3 NIOSH recommended ceiling 10 minutes; 5 mg/m3 DFG MAK 4 times/shift (total dust) Sodium cyanide = 5 mg(CN)/m3 ACGIH Ceiling (Skin) Hydrogen cyanide = 10 ppm (11 mg/m3) OSHA TWA (Skin) 4.7 ppm (5 mg/m3) OSHA STEL (Skin) 4.7 ppm (5 mg/m3) ACGIH Ceiling (Skin) 4.7 ppm (5 mg/m3) NIOSH recommended STEL (Skin)
3.2 Engineering Controls
Provide local exhaust ventilation system. Ensure compliance with applicable exposure limits.
3.3 Personal Protection
Eye protection - wear splash resistant safety goggles with a faceshield. Skin protection - wear appropriate chemical resistant clothing and gloves. Respiratory protection - The following respirators and maximum use concentration are drawn from NIOSH and/or OSHA. Cyanide (as CN) = 25 mg/m3 - any supplied-air respirator. Any self contained breathing apparatus with a full facepiece. Escape-any air-purifying, full facepiece respirator (gas mask) with a chin-style, front or back-mounted canister providing protection against this class of compounds and having a high efficiency particulate filter. Any appropriate escape type, self contained breathing apparatus.
3.4 Flammability
Stable under normal temperatures and pressure. SAFE HANDLING INFORMATION
4.1 Storage / Transport
Store and handle in accordance with all current regulations and standards. Protect from physical damage. Store in a cool, dry place. Avoid contact with incompatible materials such as acids, oxidising materials, combustible materials , peroxides, halogens and metals. Avoid contact with heat, flames, sparks and other sources of ignition. Containers may rupture or explode if exposed to heat.
4.2 Packaging / Labelling UN No. 1689 Class 6.1 Sub Risk None Allocated Hazchem Code 2X Pack Group I EPG No. 40 Shipping Name SODIUM CYANIDE Hazard VERY TOXIC
Risk Phrases R26/27/28 Very toxic by inhalation, in contact with skin and if swallowed. R32 Contact with acids liberates very toxic gas.
Safety Phrases S1/2 Keep locked up and out of the reach of children. S7 Keep container tightly closed. S28:SOCYAN After contact with skin, wash immediately with plenty of water. S29 Do not empty into drains. S45 In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible).
4.3 Spills and Disposal
Spills
Avoid formation of dust. Ensure sufficient ventilation. Avoid skin contact because of the danger of skin absorption. DO NOT allow entrance in soil stretches of water drainage systems. Cyanide-containing sewage water and solutions must be decontaminated before entering public canal network or stretch of water.
Small spills - absorb with sand or other non-combustible material. Collect spilled material in appropriate container for disposal. For small dry spills - move containers away from spill to a safe area. Large spills - dike for later disposal. Keep unnecessary people away, isolate hazard area and deny entry. Ventilate closed spaces before entering. Air release - reduce vapours with water spray. Collect runoff for disposal as potential hazardous waste. Soil release - dig holding area such as a lagoon, pond or pit for containment. Cover with plastic sheet or tarp to minimise spreading and protect from contact with water. Water release - add an alkaline material (lime, crushed limestone, sodium bicarbonate, or soda ash). Add an oxidising agent.
Disposal
Dispose of in accordance with all Local, State and Federal regulations at an approved waste disposal facility.
4.4 FIRE AND EXPLOSION HAZARD Fire / Explosion
Product may decompose emitting cyanide. Avoid incompatible materials such as acids, oxidising materials, combustible materials, peroxides, halogens and metals. Avoid heat, flames, sparks and other sources of ignition. Containers may rupture or explode if exposed to heat. Hazardous polymerisation will not occur.
Extinguishing Media
Large fires - use regular foam or flood with fine water spray. Move container from fire area if it can be done without risk. Fight large fires from a protected location or safe distance. Stay away from the ends of the tanks. Dike for later disposal. Do not scatter spilled material with high-pressure water streams. Use regular dry chemical, regular foam or water. 5 OTHER INFORMATION
Other Information
Fish toxicity LC50 Yellow perch (Perca flavescens) = 102 ug/L (96hr) Invertebrate toxicity EC50 (Detachment) Stonefly (Pteronarcys dorsata). Other toxicity (Avoidance) Frog (Rana temporaria) = 260ug/L 0.42 months.
5.1 Contact Points
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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.
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