1) anhydrous potassium carbonate
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无水碳酸钾
1.
The reaction of condensation-cyclization of the two prepared compounds at 100 ℃ in the presence of anhydrous potassium carbonate gave 1,4,7,10-tetrakis(p-toluenesulfonyl)-1,4,7,10-tetraazacyclododecane,with a yield of 71%.
在无水碳酸钾存在下,100℃加热使所得两种磺酰化产物缩合环化得到1,4,7,10-四(对甲苯磺酰基)-1,4,7,10-四氮杂环十二烷,产率71。
2.
Cinnamic acid was synthesized by Perkin reaction with anhydrous potassium carbonate as alkaline catalyst,PEG-400 as phase transfer catalyst,and p-tert-butyl catechol as polymerization inhibitor.
以无水碳酸钾为碱催化剂,PEG-400为相转移催化剂,对叔丁基邻苯二酚为阻聚剂,通过Perkin法合成肉桂酸,考察了物料比、碱催化剂用量、PEG-400用量、对叔丁基邻苯二酚用量、回流时间对产品产率的影响。
3.
An improvement on synthetic procedure of cinnamic acid is studied, using anhydrous potassium carbonate and potassium fluorid as catalyst and PEG-400 as phase transfer catalyst.
采用PEG400为相转移催化剂,以无水碳酸钾和氟化钾为催化剂,对肉桂酸的Perkin合成工艺进行了改进,通过考察催化剂配比、反应时间得到最佳的反应条件,产率可达64。
2) potassium water
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碳酸钾水
3) photographic grade potassium carbonate, anhydrous
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摄影用无水碳酸钾
4) potassium carbonate wastewater
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碳酸钾废水
5) hydrated potash
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含水碳酸钾
6) hydrated potash
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含水碳酸钾;结晶碳酸钾
补充资料:无水碳酸钾
CAS: 584-08-7
分子式: K2CO3
分子质量: 138.21
熔点:891℃
中文名称: 碳酸钾;钾碱;无水碳酸钾;珍珠灰;粗碳酸钾;碳酸钾,钾碱
英文名称: Carbonic acid, dipotassium salt;Potassium carbonate;potassium carbonate;carbonate de potassium;carbonate of potash;dipotassium carbonate;kalium carbonicum;kaliumcarbonat
分子式: K2CO3
分子质量: 138.21
熔点:891℃
中文名称: 碳酸钾;钾碱;无水碳酸钾;珍珠灰;粗碳酸钾;碳酸钾,钾碱
英文名称: Carbonic acid, dipotassium salt;Potassium carbonate;potassium carbonate;carbonate de potassium;carbonate of potash;dipotassium carbonate;kalium carbonicum;kaliumcarbonat
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
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