<Tr> <Th_colspan="2"> Hazards </Th> </Tr> <Tr> <Td> Main hazards </Td> <Td> skin and eye irritant </Td> </Tr> <Tr> <Td> Safety data sheet </Td> <Td> HMDB </Td> </Tr> <Tr> <Td> GHS pictograms </Td> <Td> </Td> </Tr>

What is the ph level of citric acid