Police raids earlier this month led to the arrest of eight Moroccans in the capital as well as the discovery of four kilograms ( 8.8 pounds ) of a cynanide-based compound, potassium ferrocyanide and firecrackers.
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Police raids last week led to the arrest of eight Moroccans in the capital as well as the discovery of four kilograms ( 8 . 8 pounds ) of a cyanide-based compound, potassium ferrocyanide, and firecrackers.
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Police raids earlier this month led to the arrest of eight Moroccans in the capital as well as the discovery of four kilograms ( 8 . 8 pounds ) of a cynanide-based compound, potassium ferrocyanide and firecrackers.
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In Europe, sodium ferrocyanide ( 535 ) and potassium ferrocyanide ( 536 ) are more common anticaking agents in table salt . " Natural " anticaking agents used in more expensive table salt include calcium carbonate and magnesium carbonate.
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The U . S . officials described Italian authorities as being virtually stymied in their probe to learn just what the maps and the four kilograms ( more than 8 pounds ) of potassium ferrocyanide were to be used for.
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The statement followed speculation that the four men were planning to use the compound, called potassium ferrocyanide, to contaminate water supplies in the capital, including the commercial area around Via Veneto where the U . S . Embassy is located.
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The men were in possession of four kilograms ( 8.8 pounds ) of potassium ferrocyanide and about 10 kilograms ( 22 pounds ) of firecrackers, which contain gunpowder, along with the maps and more than 100 false documents, said Cavallo.
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The men were in possession of four kilograms ( 8 . 8 pounds ) of potassium ferrocyanide and about 10 kilograms ( 22 pounds ) of firecrackers, which contain gunpowder, along with the maps and more than 100 false documents, said Cavallo.
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Luciano Caprino, an expert in pharmacology at Rome's La Sapienza University, said potassium ferrocyanide itself is not toxic, " but if heated up to about 500 degrees C ( 932 F ), it can emit hydrocyanic acid, which is highly toxic ."
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The original stain formula, known historically ( 1867 ) as " Perls'Prussian blue " after its inventor, German pathologist Max Perls ( 1843-1881 ), used separate solutions of potassium ferrocyanide and acid to stain tissue ( these are now used combined, just before staining ).
