<Tr> <Td> LD (lowest published) </Td> <Td> 500 mg / kg (rabbit, oral) 1850 mg / kg (cat, oral) </Td> </Tr> <Tr> <Td_colspan="2"> US health exposure limits (NIOSH): </Td> </Tr> <Tr> <Td> PEL (Permissible) </Td> <Td> TWA 1.5 mg / m (skin) </Td> </Tr> <Tr> <Td> REL (Recommended) </Td> <Td> TWA 0.5 mg / m (skin) </Td> </Tr>

What is the percentage of dnt in a typical solid sample of tnt