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Material Safety Data Sheet Potassium nitrite ACC 19480 Section 1 Chemical Product and Company Identification MSDS Name Potassium nitrite Catalog Numbers AC222700000 AC222700010 AC222702500 AC423060000 AC423060050 AC423065000 P267 250 P267 500 Synonyms Nitrous acid potassium salt Company Identification Fisher Scientific 1 Reagent Lane Fair Lawn NJ 07410 For information call 201 796 7100 Emergency Number 201 796 7100 For CHEMTREC assistance call 800 424 9300 For International CHEMTREC assistance call 703 527 3887 Section 2 Composition Information on Ingredients CAS 7758 09 0 Chemical Name Percent EINECS ELINCS 96 231 832 4 Potassium nitrite Section 3 Hazards Identification EMERGENCY OVERVIEW Appearance white to pale yellow crystals Danger Toxic if swallowed Strong oxidizer Contact with other material may cause a fire Very toxic to aquatic organisms Target Organs Blood respiratory system gastrointestinal system eyes ears Potential Health Effects Eye Causes eye irritation Causes redness and pain Skin Causes skin irritation Causes redness and pain May be harmful if absorbed through the skin Ingestion Poison by ingestion May cause headache May cause nausea and vomiting Overexposure may cause methemoglobinemia Ingestion may cause a decrease in blood pressure rapid pulse and visual disturbances Inhalation Causes respiratory tract irritation May cause effects similar to those described for ingestion Chronic Absorption into the body leads to the formation of methemoglobin which in sufficient concentrations causes cyanosis bluish discoloration of skin due to deficient oxygenation of the blood 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 imme diately Skin Get medical aid immediately Immediately flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes Ingestion Do not induce vomiting Get medical aid immediately

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