Synthesis and characterization of spherical 2-diazo-4,6-dinitrophenol (DDNP).
Spherical 2-diazo-4,6-dinitrophenol (DDNP) with good flowability and controlled bulk density (0.65-0.95 g/cm(3)) has been prepared at factory scale by the modified method using 4-methylphenol as crystal control ingredient. Results showed that the yield of product was increased by 5-10%, and the waste water was significantly decreased due to circulation use of waste water compared with traditional method. Synthesized spherical DDNP was characterized by IR, laser granularity measurement, SEM, HPLC and XRD. IR spectrum confirmed the structural features of spherical DDNP. The particle analysis revealed that the modified method could offer spherical DDNP with average particle size of 350 microm and high purity (>98.52%). The XRD peaks of spherical DDNP have similar diffraction angles as those of traditional DDNP. The DSC profile of spherical DDNP showed the exothermic decomposition in the temperature range of 161.2-188.5 degrees C. The product can be pressed at over 40MPa without dead pressed phenomenon, and the minimum detonating charge of spherical DDNP was measured to be about 0.15g. Furthermore, impact sensitivity test suggested that spherical DDNP is less sensitive than traditional DDNP.
Yang
Zong-Wei
ZW
Chemical Industry and Ecology Institute, North University of China, Taiyuan, Shanxi 030051, China.
Liu
Yu-Cun
YC
Liu
Deng-Cheng
DC
Yan
Li-Wei
LW
Chen
Ji
J
D004140:Dinitrophenols / Q000138:chemical synthesis / Q000737:chemistry*; D005107:Explosions; D053834:Explosive Agents / Q000138:chemical synthesis / Q000737:chemistry*; D008968:Molecular Conformation; D009574:Nitro Compounds / Q000737:chemistry*; D010316:Particle Size; D013696:Temperature; D013816:Thermodynamics
C549764:2-diazo-4,6-dinitrophenol; D004140:Dinitrophenols; D053834:Explosive Agents; D009574:Nitro Compounds