Diaminodiphenic Acid

Name:
Diaminodiphenic Acid
Detailed information:

Chemistry name:	benzidinedicarboxylic acid
M Formula:	C6H3(CO2H)NH2C6H3(CO2H)NH2
Properties:
White crystals. Soluble in alcohol and ether; insoluble in water.
Derivation:
By boiling m-nitrobenzaldehyde with caustic soda, reducing with zinc dust, and acidifying.
Hazard:
See Benzidine.
Use:
Dyestuff.