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hekai16
ľ³æ (ÕýʽдÊÖ)
- ·ÒëEPI: 9
- Ó¦Öú: 1 (Ó×¶ùÔ°)
- ½ð±Ò: 5655.5
- É¢½ð: 230
- ºì»¨: 2
- Ìû×Ó: 472
- ÔÚÏß: 8585.3Сʱ
- ³æºÅ: 848484
- ×¢²á: 2009-09-15
- רҵ: ÉúÎï´ó·Ö×ӽṹÓ빦ÄÜ
3Â¥2010-07-31 12:09:48
hekai16
ľ³æ (ÕýʽдÊÖ)
- ·ÒëEPI: 9
- Ó¦Öú: 1 (Ó×¶ùÔ°)
- ½ð±Ò: 5655.5
- É¢½ð: 230
- ºì»¨: 2
- Ìû×Ó: 472
- ÔÚÏß: 8585.3Сʱ
- ³æºÅ: 848484
- ×¢²á: 2009-09-15
- רҵ: ÉúÎï´ó·Ö×ӽṹÓ빦ÄÜ
studenttan(½ð±Ò+8): 2010-07-31 14:20:22
| The method of recirculation usually heating up in oil bath£¬however£¬if the reaction temperature is too high or the reaction time is too long, it catch fire very easily,and this is very degerous.what's more ,the gas tightness of this methed is unsatisfactory, and is prone to contaminate air. |
2Â¥2010-07-31 12:08:15
charleygan
ÖÁ×ðľ³æ (ÖøÃûдÊÖ)
chlgan
- ·ÒëEPI: 99
- Ó¦Öú: 496 (˶ʿ)
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- ³æºÅ: 859768
- ×¢²á: 2009-09-29
- ÐÔ±ð: GG
- רҵ: Ó¦Óø߷Ö×Ó»¯Ñ§ÓëÎïÀí
studenttan(½ð±Ò+10, ·ÒëEPI+1): 2010-07-31 14:19:59
| The method of reflux is usually heated up in oil bath. However, it is very dangerous if the reaction temperature is too high, or the reaction time is too long, and it could catch fire very easily. Furthermore, it is very easy to pollute the air because of the gas leaking in the reactor. |
4Â¥2010-07-31 12:41:44
ˮƮÁã
½ð³æ (ÖøÃûдÊÖ)
½ðÁê¼Ò×å֮DZˮÈËÊ¿
- ·ÒëEPI: 15
- Ó¦Öú: 0 (Ó×¶ùÔ°)
- ¹ó±ö: 0.02
- ½ð±Ò: 283.2
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- ºì»¨: 8
- ɳ·¢: 2
- Ìû×Ó: 1683
- ÔÚÏß: 322.1Сʱ
- ³æºÅ: 438373
- ×¢²á: 2007-09-21
- ÐÔ±ð: GG
- רҵ: Óлú·Ö×Ó¹¦ÄܲÄÁÏ»¯Ñ§
studenttan(½ð±Ò+2): 2010-08-01 09:30:59
|
The method of refluxing often works in oil bath. if the temperature is too high or the reaction time is too long, it is very easy to catch fire. Moreover, it is prone to pollute enviroment due to the poor air impermeability¡£ [ Last edited by ˮƮÁã on 2010-7-31 at 14:35 ] |

5Â¥2010-07-31 14:33:33













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