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Chemical
POTASSIUM CHLORATE Section 1. Chemical identification Name: Potassium chlorate
Section 2. Composition/information on ingredients CAS # 3811-04-9
EINECS No: 223-289-7
MF: KClO3
Synonyms Berthollet's salt, chlorate of potash, oxymuriate of potash, salt of tarter, potassium oxymuriate.
Section 3. Hazards identification Label precautionary statements Oxidizing Harmful Contact with combustible material may cause fire. Irritating to eyes, respiratory system and skin. Target organ(s): Blood, Liver • • • •
Safety precautions Keep away from combustible material. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. Wear suitable protective clothing
Oxidising
• •
•
Harmful
Section 4. First aid measures In case of eye contact, immediately flush eyes with copious amounts of water for at least 15 minutes. Assure adequate flushing of the eyes by separating the eyelids with fingers, and seek medical advice. In case of skin contact, immediately flush skin with copious amounts of water for at least 15 minutes while removing r emoving contaminated clothing and shoes. If inhaled, remove to fresh air. If not breathing give artificial respiration. If breathing is difficult give oxygen. oxygen. If swallowed swallowed,, wash out mouth with water provided person is conscious. Call a physician. Do not induce induce vomiting. Wash contaminated clothing before reuse.
Chemical
POTASSIUM CHLORATE
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Section 5. Fire fighting measures Extinguishing media Water spray. •
Special fire fighting procedures Wear self-contained breathing apparatus and protective clothing to prevent contact with skin and eyes. Strong oxidiser. May explode when heated. •
• •
Unusual fire and explosions hazards May explode when heated. Contact with other materials may cause fire. Emits toxic fumes under fire conditions, or when heated to decomposition of oxides of chlorine (e.g. OCl 2) and K 2O • • •
Section 6. Accidental release measures Evacuate area. Wear self-contained breathing apparatus, rubber boots and heavy rubber gloves. Cover with dry lime or soda ash, pick up, keep in a closed container and hold for waste disposal. Ventilate area and wash spill site after material pickup is complete. • •
•
Section 7. Handling and storage Refer to Section 8. Store in YELL W area. O W
Additional information Mixtures of potassium chlorate with many substances are explosive and may be initiated by light friction, impact or heat.
Section 8. Exposure controls/personal protection •
• • • • • •
Wear approved respirator EN149 in non-ventilated areas or for exposure above the OEL, chemical-resistant gloves, safety goggles, other protective clothing. Use only in a chemical fume hood. Safety shower and eye bath. Avoid breathing dust. Do not get in eyes, on skin, on clothing. Avoid prolonged or repeated exposure. Wash thoroughly after handling.
Chemical
POTASSIUM CHLORATE • • • • •
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Harmful solid. Irritant. Keep tightly closed. Keep away from combustible materials, heat, sparks, and open flame. Store in a cool dry place.
Goggles
Gloves
Respirator
Protective clothing
Wash hands
Section 9. Physical and chemical properties Appearance and odour Solid. Transparent, monoclinic, colorless crystals, or white powder o o Melting point 356 C Boiling point 400 C (dec.) Density 2.32
Section 10. Stability and reactivity Incompatibilities Strong reducing agents. Finely powdered metals. Strong acids. Alcohols. Organic materials. • • • • •
Hazardous combustion or decomposition products Oxygen. •
Section 11. Toxicological information Acute effects Harmful if inhaled or swallowed. May be harmful if absorbed through the skin. Causes eye and skin irritation. Material is irritating to the mucous membranes and upper respiratory tract. Absorption into the body leads to the formation of methemglobin which in sufficient concentration cause cyanosis. Onset may be delayed 2 to 4 hours or longer. • • • • •
Chronic effects
Chemical
POTASSIUM CHLORATE •
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Anaemia.
Target organ(s): Blood. Kidneys. Liver. • • •
toxicity data orl-rat LD50: 1500 mg/kg Target organ data Behavioural (change in motor activity)(coma) Lungs, thorax or respiration (other changes) Additional information Symptoms of overexposure to potassium chlorate include nausea, vomiting, abdominal pain, diarrhoea, anaemia (haemolytic) and haemorrhage. Methemoglobin formation results from catalytic oxidation of the blood. Anuria, damage to the liver, convulsions due to central nervous system effects and coma may also occur.
Section 12. Ecological information Data not yet available.
Section 13. Disposal considerations •
•
Cautiously acidify a 3% solution or a suspension of the material to pH 2 with sulfuric acid. Gradually add a 50% excess of aqueous sodium hydrogen sulfite with stirring at room temperature. An increase in temperature indicates that a reaction is taking place. If no reaction is observed on the addition of about 10% of the sodium hydrogen sulfite solution initiate it by cautiously adding more acid. If manganese or chromium or molybdenum are present adjust the pH of the solution to 7 and treat with sulfide to precipitate for burial as hazardous waste. Destroy excess sulfide, neutralise and flush the solution down the drain. Observe all EU, Irish and local environmental regulations.
Section 14. Transport information Contact chemical supplier for transportation information.
Chemical
POTASSIUM CHLORATE
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Section 15. Regulatory information European information EC index no: 017-004-00-3 Oxidising Harmful Explosive when mixed with combustible material. R9 • •
R 20/22 S 13 S 16 S 27
Oxidising
Harmful by inhalation and if swallowed. Keep away from food, drink and animal feeding stuffs. Keep away from sources of ignition - no smoking. Take off immediately all contaminated clothing.
Harmful
Section 16. Other information This MSDS has been prepared in DkIT and is designed for Irish Second Level School Science Laboratories use only where quantities handled are less than 50g. The above information is believed to be correct but does not claim to be all inclusive and shall be used only as a guide. Every effort has been made to ensure that this information provided conforms with the latest available data. DkIT, the Department of Education & Science, Limerick Education Centre, Sigma, Aldrich, Fluka, Dr. Dunlevy or Ms. F. Dunlevy shall not be held liable for any information errors in this MSDS or for any damage resulting from handling or from contact with the above product. Please address any comments or error observations to:
[email protected]
REFERENCES Sigma Aldrich Fluka MSDS CD-ROM Sax CD-ROM MSDS on Internet
