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EC number: 701-292-9
CAS number: -
Two groups, each of five male/female Sprague dawly rats, were treated with the test item by oral gavage administration at a dosage of 5000 mg/kg body weight. The test item was suspended in a vehicle (corn oil) at a concentration of 25% (v/v). All animals were allowed to acclimatise to the laboratory conditions for at least 2 days. The animals were observed for mortality/morbidity, clinical signs, body weights and examined macroscopically. All animals survived until the end of the 14-day observation period and no clinical signs were observed. At necropsy, no macroscopical findings were observed. Therefore, for hexagonal boron nitride the LD50 > 5000 mg/kg body weight and the substance should be not classified according to Annex I of Regulation (EC) 1272/2008.
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