The following is an introduction to 5-Nitroisophthalic acid CAS 618-88-2, I hope to help you better understand 5-Nitroisophthalic acid CAS 618-88-2. Welcome new and old customers to continue to cooperate with us to create a better future together! White needle crystals. Melting point 259-261 ° C, boiling point 350.79 ° C , soluble in benzene and ethanol.