InChI=1S/CH2N2/c2-1-3/h2H2 InChIkey XZMCDFZZKTWFGF-UHFFFAOYSA-N Canonical Smiles C(#N)N 国际化联命名 cyanamide 物化属性我要纠错 密度:1.282熔点:45℃沸点:113° F (NIOSH, 2016)折射率:1.405闪光点:286° F (NIOSH, 2016)蒸汽压:0.0±0.5 mmHg at 25°CPSA:49.81000logP:0.12648溶解度:ethan...
方法一:在100ml圆底烧瓶中加入1.0 mol的羧酸6(a-q)到10ml乙醇中。为此,在室温下加入催化量的高浓度H2SO4,在85℃下回流加热,连续搅拌3-4 h。3 h后,用乙酸乙酯-己烷(3:7)体系薄层色谱(TLC)对反应进行监测。继续搅拌,直到TLC显示反应完成。然后让反应混合物达到室温。在减压下蒸馏乙醇,将残渣溶于水,然后用...
化学性质:WHITE TO VERY SLIGHTLY YELLOW CRYSTALLINE POWDER Aniline sulfate Preparation Products And Raw materials Preparation Products颜色:白色有光泽的片状结晶。见光或在空气中色变深。物理属性:硫酸苯胺,分子式(C6H5NH2)2·H2SO4。分子量284.3。相对密度1.377 (4/ 4℃)。遇光和在空气中变浅灰色或浅绿色。
Wash the ether with conc H2SO4, then Na2CO3 solution, dry with anhydrous Na2CO3, and finally pass it through a 50cm column of activated alumina before distillation. Altern Incompatibilities Contact with moisture caused decomposition producing hydrochloric acid. Can form peroxides. May form explosive ...
Preparation and decomposition of ammoniojarosite at elevated temperatures in H2O-(NH4)2SO4-H2SO4 media. Hydrometallurgy. 1995;38 (3):263-276.Das, G.K., Anand, S., Acharya, S., Das, R.P., 1995. Preparation and decomposition of ammoniojarosite at elevated temperatures in H2O-(NH4)2SO4-...
首次利用尿素为沉淀剂,在常压较低反应温度下制备了具有对正戊烷有较高反应活性与很高异构化选择性的SO_(?)~(2-)/ZrO_2-NiO固体超强酸催化剂,系统研究了催化剂的掺镍量,灼烧温度,反应温度以及催化剂反应前处理条件对催化剂活性及异构化选择性的影响,发现当Zr:Ni=52:10(原子比)时,正戊烷的平均转化率可达44.6...
Ammonium sulfate also is a byproduct of coke oven operations where the excess NH3 formed is neutralized with H2SO4 to form (NH4)2SO4. In the Meresburg reaction, natural or byproduct gypsum is reacted with ammonium carbonate: CaSO4·2H2O + (NH4)2CO3 CaCO3 + (NH4)2SO4 +2 H2O The...
Incompatible with HNO3 and H2SO4. An antiprotozoal agent. 2-Amino-5-nitrothiazole Preparation Products And Raw materials Raw materials View all 4.3 Formulations/Preparations ENHEPTIN PREMIX, NITRAMIN, NITRAMINE 4.4 Report The 2-Amino-5-nitrothiazole, with the cas registry number 121-66-4, ...
[0046]用于该方法步骤的合适的酸可包括但不限于HCl、HBr、H2SO4、H3PO4、HNO3、乙酸和三氟乙酸。 [0047]该方法步骤可在约150℃至约-80℃、或约100℃至约-30℃的温度进行。 [0048]4-((6-(2-(2,4-二氟苯基)-1,1-二氟-2-羟基-3-(1H-1,2,4-三唑-1-基)丙基)吡啶-3-基)氧基)苄腈(II)...
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