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pharmjackie
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liuwei2008(½ð±Ò+10,VIP+0):лл 4-8 17:55
liuwei2008(½ð±Ò+10,VIP+0):лл 4-8 17:55
| Spherical DDNP is obtained through reducing picric acid with sodium sulfide and through the employment of single feeding of hydrochloric acid and self-developed F-1 crystal shape controller. Said product has an average pore size more than 350 micrometers with more than 95% is left above the sieve, a controllable bulk density between 0.70-0.90g/cm3, a baroduricity more than 400MPa, a good mobility. In the present produce process, no fine crystal or explosive dust is produced, and thus eliminate the need to wash away the fine crystals. The yield is 2-3% higher than the traditional method,and through the cycle use of mother liquid the water need for each product unit is 30-35kg/kg. It has found application in industrial scale production.°ÑÄãµÄһЩ´Ê¸Ä³ÉÁËÎÒÈÏΪÊÇרҵһµãµÄ£¬ÄãÔÙ¼ì²éһϡ£Â¥Ö÷ÔÀ´µÄÓ¢ÓïÊÇÓÃÈí¼þ·ÒëµÄÂ𣿠|
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