作者查詢 / buteo
作者 buteo 在 PTT [ Chemistry ] 看板的留言(推文), 共2187則
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1F推:不可行 光毒性你就太低估CO2了08/08 07:40
2F→:二氧化碳要濃度高到可以避免燃燒的同時 人也會窒息08/08 07:42
3F→:根據wikipedia 1%就可以讓人想昏睡 7-10%可讓人窒息08/08 07:44
6F推:純的海龍滅火氣體穩定性高 毒性低 唯一只怕破壞臭氧層08/08 10:02
7F→:但如果海龍不純的話 就有可能產生光氣08/08 10:02
8F→:http://news.ltn.com.tw/news/life/paper/10382208/08 10:02
9F→:另外如果外洩達到這種規模 要打的氣體會是幾噸.幾十噸以上08/08 10:04
10F→:最有效的方法還是只有盡快阻絕源頭 找遮掩 等消散08/08 10:05
15F推:消防隊最後是這樣處理沒錯 留一處控制燃燒到中午08/09 20:52
16F→:不過那是殘存量 在還沒爆以前的量恐怕是不容易這樣燒08/09 20:53
7F→:yw1002請勿推與本文相關性低的推文 再犯將處以水桶一個月08/06 19:33
1F推:JACS和ACIE黃金交叉了? JACS 11.44 ACIE 11.3307/30 10:10
2F→:ACIE也掉太多了吧?07/30 10:22
8F推:毒品的水溶性極少有高到足以用NMR測出 如樓上e大所述07/21 07:25
9F→:用GC-MS 或是tandem MS是比較常見驗毒的方法07/21 07:26
1F推:Ullmann的再現性感覺沒有Pd-catalyzed coupling好07/17 20:08
2F→:CuI有純化嗎? 有時除掉Cu(II)的雜質會有幫助07/17 20:10
5F→:如果反應混合物裡主要只有起始物和產物 副反應很少07/17 20:11
8F→:那就多加一些CuI吧 反正不貴07/17 20:12
11F→:如果用b大的建議 把pentanol當溶劑 那work-up不真空濃縮07/17 20:17
13F→:直接用蒸餾把兩種起始物除掉 再流column會比較好07/17 20:19
20F推:做大量純化可以考慮做減壓分餾 感覺能跟起始物分得開07/18 11:06
85F→:好文 經原作同意轉錄07/12 10:45
1F推:強酸/弱酸 是以解離常數來分 和能夠解離幾個質子無關05/08 01:01
1F推:腦筋急轉彎? 題目最開頭"在室溫及一大氣壓下"05/02 20:58
1F推:http://en.wikipedia.org/wiki/Tetralone04/12 20:30
2F→:氧化成酸 然後Friedel-Crafts 最後加酸04/12 20:31
1F推:左邊對 但右邊是醛基比較大 -COH等同C接兩個O 所以是E式02/03 22:19