| production method | with 2, 4-dinitrochlorobenzene and phthalic anhydride as raw materials, firstly, 2, 4-dinitrochlorobenzene reacts with ammonia to form 2, 4-dinitroaniline, which is then acylated with acetic anhydride. Then, 133 parts of 2, 4-dinitroacetanilide and 93 parts of phthalic anhydride were added to 280 parts of sodium sulfide and 94 parts of sulfur melted (95 °c), and salt was added, and the temperature was raised to 130 °c, hold for 10-11H, then rapidly warm to 180 °c for 3-4H until the end of the reaction. Then, it was cooled and crushed to obtain a finished product.. |