sodium nitrate 硝酸钠(133)   硝酸钠     5 Amino 2,4,6 triiodoisophthalic acid was synthesized from isophthalic acid by a three step procedure,nitration,reduction and iodination. (1)Nitration:at n (sulfuric acid)∶ n (sodium nitrate)∶ n (isophthalic acid)=7 9∶2 2∶1 0 after reacting at 60 ℃ for 3 h,the yield of nitro compound was 86.7%.     (1)硝化反应 ,n(硫酸 )∶n(硝酸钠 )∶n(间苯二甲酸 ) =7 9∶2 2∶1 0 ,温度 70℃下反应 3h ,产率为 86 7% ; 短句来源     By using GPC/Viscometry, the calculation of intrinsic viscosity can be simplified, and the absolute molecular weight and its distribution of polyaspartic acid are quickly determined,too. The largest error is in the range of 1.02%～4.2%,and the value of K is 1.09×10~ -3 dL/g and α is 0.40 in the 0.1KG-*9mol/L sodium nitrate solution at 35℃.     通过高温凝胶在线黏度色谱仪(GPCV),可以简化特性黏度的计算,快速得到聚天门冬氨酸的分子量及其分布,分子量的最大偏差在1·02%~4·2%之间,同时给出35℃时,0·1mol/L硝酸钠溶液中聚天门冬氨酸溶液的K值为1·09×10-3dL/g,α为0·40。 短句来源     The result shows that it is better to control the reaction temperature of trifluoroaniline sulfate preparation and sodium nitrate dropping addition are 55 ℃ and 15 ℃ during diazotization, respectively;     实验结果表明:重氮化时制备三氟苯胺硫酸盐和滴加亚硝酸钠反应温度分别控制在55℃和15℃左右为好; 短句来源     Purification of sodium nitrate used in optical fiber fabrication with complexing extraction method     络合萃取法在提纯光纤试剂硝酸钠中的应用 短句来源     Stress corrosion cracks in sodium nitrate evaporator and countermeasures     硝酸钠蒸发器的应力腐蚀开裂及其对策 短句来源 更多          “sodium nitrate”译为未确定词的双语例句     Withthe concentration of sodium chloride, sodium sulfate and sodium nitrate increasing, the徐晨:醋酸稀溶液络合萃取过程研究 2004 年 5 月distribution coefficients increase with different extent.     (6) 在试验研究范围内,随着醋酸稀溶液初始浓度的降低、两相流量的增大,转盘塔萃取率随之增徐晨:醋酸稀溶液络合萃取过程研究 2004 年 5 月大; 短句来源     The optimal culture conditions were as follows: lactose 3.5%, sodium nitrate 3.0%, K2HPO4 0.05%, MgSO4·7H2O 0.025%, KCl 0.05%, FeSO4·7H2O 0.001%, temperature 26℃, initial pH 8.0, shaker rotate speed 150 rpm, volume loading 60 mL of 250 mL Erlenmeyer flask.     工艺条件为:温度26℃、摇床转速150 rpm、起始pH 8.0和装液量60 mL/250 mL,发酵周期为14天。 短句来源     (1)Nitration:At n (sulfuric acid)∶ n (sodium nitrate)∶ n (isophthalic acid)=7.9∶2 2∶1 0(at 60℃)for 3h,the yield of nitrate is 86 1%,(2)Reduction:At n (iron)∶ n (nitrate)=3.0∶1 0 after being refluxing for 3 h,the yield of aminate is 77 2%;     (2 )还原反应 ,n(铁粉 )∶n(硝基物 )=3.0∶1.0 ,回流反应 3h ,产率为 77.2 % ; 短句来源     5 was nitrated with sodium nitrate/sulfuric acid/sodium nitrite at 0～15℃ to give 5-chloro-2-nitroacenilide 6 in yield of 70. 8%.     5硝化得到－硝基－5－氯乙酰苯胺6，产率70．8％； 短句来源   相似匹配句对     STUDY ON PREPARATION OF SODIUM NITRATE FROM MIRABILITE BY DOUBLE DECOMPOSITION     芒硝复分解法制备硝酸钠的研究 短句来源     Stress corrosion cracks in sodium nitrate evaporator and countermeasures     硝酸钠蒸发器的应力腐蚀开裂及其对策 短句来源     Sulbenicillin Sodium     磺苄青霉素钠 短句来源     Sodium Lauroyl Sarcosinate     月桂酰肌氨酸钠 短句来源     Microcapsule characteristics of econazole nitrate     硝酸益康唑微胶囊的制备及性能研究 短句来源 查询“sodium nitrate”译词为用户自定义的双语例句     我想查看译文中含有：的双语例句 为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法，我们为您准备了出自英文原文的大量英语例句，供您参考。   sodium nitrate The thresholds of fast coagulation of sol in the presence of sodium nitrate and sodium sulfate were determined. 例句来源       The sol coagulation thresholds are determined in the presence of sodium nitrate and sulfate, as well as of mixed magnesium salt at various pH values of the dispersion medium. 例句来源       Investigation into the Electrical and Optical Properties of Sodium Nitrite and Sodium Nitrate Nanoparticles in Regular Porous Ma 例句来源       New nanocomposites based on zeolites (NaA-NaNO2, NaA-NaNO3) and opals (o-NaNO2, o-NaNO3) that contain sodium nitrite or sodium nitrate nanoparticles in cages of regular porous matrices are prepared. 例句来源       Degradation of electronic excitations in crystalline sodium nitrate 例句来源       更多                    Phenol was directly nitrated in two phases consisted of diethyl ether and aqueous sodium nitrate-sulfuric acid solution. The yield of nitrated product is more than 80%. No obvious oxidation product was formed in reaction. The recovery of diethyl ether is more than 75%.             以乙醚和硝酸钠-硫酸水溶液组成的两相对苯酚进行直接硝化,硝化产物得率可达80％以上,反应无明显的氧化物生成,乙醚的回收率高于75％。 文摘来源          In the two-phase nitration of phenol in the persence of β-CD,the regioselectivity of the reaction could be improved markedly,factors such as the polarity of the organic solvents,the amount of sodium nitrate used and reaction temperature have been investigated.Some experimental results have been discussed.             β－ＣＤ存在下对苯酚进行两相硝化反应，可以明显改善反应的位置选择性。研究了有机相溶剂极性、硝酸钠用量及反应温度等对反应的影响，并对实验结果进行了讨论。 文摘来源          Chloro-2-methylbenzimidazole 1 was Synthesized. Acetanilide reacted with chlorine in acetic acid/water to offer 4-chloro-acetanilide 5 in yield of 67.3%. 5 was nitrated with sodium nitrate/sulfuric acid/sodium nitrite at 0～15℃ to give 5-chloro-2-nitroacenilide 6 in yield of 70. 8%. Reduction of 6 with Hcl-HOAc/Fe followed by cyclization furnished 1 in yield of 78.4%. Effects of different reaction conditions on yield of products mentioned above were studied and the results of the expe...             合成了２－甲基－５－氯苯并咪唑１．乙酰苯胺经氯代制得４－氯乙酰苯胺５，产率６７．３％；５硝化得到－硝基－５－氯乙酰苯胺６，产率７０．８％；６经还原环化得到１，产率７８．４％．研究了各步合成的条件及其对产率的影响，并对实验结果进行了讨论． 文摘来源   << 更多相关文摘         相关查询: nitrate sodium sodium nitrate gelignite industrial sodium nitrate preparing sodium nitrate sodium nitrate evaporator sodium potassium nitrate sodium nitrate and sodium nitrite sodium nitrate) (sodium nitrate sodium glutamate  对查询结果不满意

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