<Tr> <Td> R - phrases (outdated) </Td> <Td> R8, R22, R50 / 53 </Td> </Tr> <Tr> <Td> S - phrases (outdated) </Td> <Td> (S2), S60, S61 </Td> </Tr> <Tr> <Td> NFPA 704 </Td> <Td> 0 OX </Td> </Tr> <Tr> <Td_colspan="2"> Lethal dose or concentration (LD, LC): </Td> </Tr>

What is the brown color that appears when kmno4 reacts with paper