<Tr> <Td> REL (Recommended) </Td> <Td> TWA 5 ppm (19 mg / m) C 15.6 ppm (60 mg / m) (15 - minute) (skin) </Td> </Tr> <Tr> <Td> IDLH (Immediate danger) </Td> <Td> 250 ppm </Td> </Tr> <Tr> <Th_colspan="2"> Related compounds </Th> </Tr> <Tr> <Td> Related compounds </Td> <Td> Thiophenol Sodium phenoxide </Td> </Tr>

How many resonance forms does phenol have when reacted with water