过硼酸钠

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  • sodium perborate
过硼酸钠过硼酸钠
  1. 用空气阴极代替锡阴极在Na2CO3-Na2B4O7介质中电解合成过硼酸钠。

    Air cathode instead of tin cathode is used to synthesize electrochemically sodium perborate in Na_2CO_3-Na_2B_4O_7 medium .

  2. 过硼酸钠(SPB)是一种良好的漂白剂,但需在较高温度下才能释放出活性氧。

    Sodium perborate ( SPB ) is one of the excellent bleaching agents . But it releases active oxygen only in high temperature washing liquor .

  3. 基于在加热和H3PO4存在下,NO2-催化过硼酸钠氧化荔枝红色素的反应,首次提出一种测定痕量亚硝酸盐的催化光度法。

    A new catalytic spectrophotometric determination of trace nitrite based on its catalytic oxidation of litchi chinese red with sodium perborate on heating and in the presence of H3PO4 has been developed .

  4. 通过对ε己内酯合成工艺条件的研究,得到了最佳合成工艺条件:环己酮与过硼酸钠四水化合物摩尔比为1∶1.5,反应时间3h,反应温度80℃。

    Through the study on the synthetic process , the optimum technological conditions were obtained , which were as follows : the molar ratio of cyclohexanone to sodium perborate tetrahydrate was 1 ∶ 1.5 , the reaction temperature was 80 ℃ and the reaction time was 3 h.

  5. 介绍了过硼酸钠在有机合成中的一些新的应用。

    New applications of sodium perborate in organic synthesis were introduced .

  6. GB/T538-1990工业硼酸由硼砂和消石灰制备偏硼酸钙和过硼酸钠

    Preparation of Calcium Metaborate and Sodium Perborate from Borax and Slaked Lime

  7. 由偏硼酸钙生产过程中的废液制备过硼酸钠

    Preparation of sodium perborate from wastewater of calcium metaborate manufacturing

  8. 在有的氧化反应中,过硼酸钠比有机过氧酸的氧化效果还佳。

    Its efficiency is better than organic peroxide acid in some oxidation reactions .

  9. 过硼酸钠在有机物选择性氧化反应中的应用

    Use of Sodium Perborate in Organic Selective Oxidation

  10. 过硼酸钠漂白剂研究进展

    Research progress of sodium perborate hydrate bleaching agent

  11. 通过对27例共32颗无髓变色牙使用过硼酸钠加双蒸水进行冠内漂白,经过三年的定期复查。

    Thirty-two severely discolored teeth were bleached by sodium perborate mixed with bidistilled water .

  12. 空气阴极电解合成过硼酸钠

    Electrosynthesis of sodium perborate using air cathode

  13. 过硼酸钠在有机合成中的应用国外精细陶瓷的发展

    Use of sodium Perborate in organic synthesis Present state and future of fine ceramics abroad

  14. 单水合过硼酸钠的制备及应用

    Preparation and application of sodium perborate monohydrate

  15. 常用的漂白剂有过氧化氢、次氯酸钠、氯化钠以及过硼酸钠。

    Common bleaching agents are hydrogen peroxide , sodium hypochlorite , sodium chlorite and sodium perborate .

  16. 三乙醇胺活化钴(Ⅱ)催化过硼酸钠氧化荔枝红色素褪色光度法测定痕量钴

    Catalytic Spectrophotometry for the Determination of Trace Cobalt Based on Oxidizing Decoloration Reaction of Litchi Chinenses Red

  17. 无机过氧化物在有机反应中作用的研究&Ⅰ.利用过硼酸钠进行烯烃环氧化反应

    Studies on the Applications of Inorganic Peroxides in Organic Reactions & I. The Epoxidation of Alkenes by Sodium Perborate

  18. 结论与一般漂白剂相比,过硼酸钠的漂白时间较短(仅6天),漂白效果相同。

    Conclusion Bleaching time of sodium perborate is shorter ( only 6 days ) compared with other pastes , but its efficacy is equivalent .

  19. 本文采用过硼酸钠作底物的高锰酸钾反滴定法测定了红细胞溶血制品及心肌匀浆中的过氧化氢酶活力。

    The activity of catalase in hemolysates of erythrocytes and myocardial homogenate in rats was measured by back titration method with permanganate , using perborate as the substrate .

  20. 实验考察了原料配比、反应温度、反应时间、液固比及稳定剂的种类等因素对合成反应和产品四水过硼酸钠质量的影响。

    The effect of raw material ratio , reaction temperature , reaction time , liquid-to-solid ratio and kinds of stabilizer on synthesis reaction and quality of the product was investigated .

  21. 基于三乙醇胺活化钴(Ⅱ)催化过硼酸钠氧化荔枝红色素的褪色反应,提出测定痕量钻的高灵敏的催化光度法。

    A highly sensitive spectrophotometry is proposed for the determination of trace cobalt based on Co (ⅱ) catalysed decoloring reaction of Litchi Chinenses red by sodium perborate under the condition of triethanolamine as an activator .

  22. 研究了含氧系漂白剂&过碳酸钠(PC)和过硼酸钠(PB)的物化性能和洗涤漂白性能。

    The physico-chemical performances and detergency , bleaching of containing oxygen - PC and PB were studied .