 There are no clear indications that europium is particularly toxic compared to other heavy metals . Europium chloride , nitrate and oxide have been tested for toxicity : europium chloride shows an acute intraperitoneal LD50 toxicity of 550 mg / kg and the acute oral LD50 toxicity is 5000 mg / kg . Europium nitrate shows a slightly higher intraperitoneal LD50 toxicity of 320 mg / kg , while the oral toxicity is above 5000 mg / kg . The metal dust presents a fire and explosion hazard . 
 <a href='dey_it' title='1'><mark>There</mark></a> are no clear indications that europium <a href='drop_aux' title='2'><mark>is</mark></a>particularly toxic compared to other heavy metals . Europium chloride , nitrate and oxide <a href='been_done' title='3'><mark>have</mark></a> been tested for toxicity : europium chloride <a href='uninflect' title='4'><mark>shows</mark></a> an acute intraperitoneal LD50 toxicity of 550 mg / kg and the acute oral LD50 toxicity is 5000 mg / kg . Europium nitrate <a href='uninflect' title='5'><mark>shows</mark></a> a slightly higher intraperitoneal LD50 toxicity of 320 mg / kg , while the oral toxicity is above 5000 mg / kg . The metal dust <a href='uninflect' title='6'><mark>presents</mark></a> a fire and explosion hazard . 
It ain't no clear indications dat europium particularly toxic compared to other heavy metals . Europium chloride , nitrate and oxide done been tested for toxicity : europium chloride show an acute intraperitoneal LD50 toxicity of 550 mg / kg and da acute oral LD50 toxicity is 5000 mg / kg . Europium nitrate show a slightly higher intraperitoneal LD50 toxicity of 320 mg / kg , while the oral toxicity is above 5000 mg / kg . Tdametal dust present a fire and explosion hazard .