PIGMENT VIOLET 23 CRUDE is mono azo organic.It is generated as the key matrial of carbazole is treated in the main six processes including alkylation, nitrification, reduction reaction, dehydration, condensation and closer.lts Molecular formula is C34H22O2N4CL2,and molecular weight is 589.28.After crude violet is pigment-treated, pigment violet 23 is produced.lt is the intermediate of 108 dye.
