| DBC-偶氮胂与氯化亚锡的氧化还原反应 |
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| 引用本文： | 马会民,梁树权. DBC-偶氮胂与氯化亚锡的氧化还原反应[J]. 分析测试学报, 1992, 0(1) |
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| 作者姓名： | 马会民 梁树权 |
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| 作者单位： | 中国科学院化学研究所(马会民)，中国科学院化学研究所(梁树权) |
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| 摘 要： | 本文报道应用紫外光谱及化学鉴定反应,对锡(Ⅱ)与DBC-偶氮胂的褪色作用进行了研究。首次发现,在酸性介质中,SnCl_2可使DBC-偶氮胂分子中的两个发色团双偶氮基断裂,使试剂分解为小分子产物,从而导致试剂褪色,以至无色。
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| 关 键 词： | DBG-偶氮胂 氯化亚锡 还原反应 |
On the Reduction of DBC-Arsenazo with Stannous Chloride |
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| Ma Huimin,Liang Shuquan Institute of Chemistry,Academia Sinica,Beijing. On the Reduction of DBC-Arsenazo with Stannous Chloride[J]. Journal of Instrumental Analysis, 1992, 0(1) |
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| Authors: | Ma Huimin Liang Shuquan Institute of Chemistry Academia Sinica Beijing |
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| Affiliation: | Ma Huimin,Liang Shuquan Institute of Chemistry,Academia Sinica,Beijing,100080 |
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| Abstract: | DBC-Arsenazo is the trivial name for the compound, 3-(2-arsenophenylazo)-6-(2, 6-dibro-mo-4-chlorophenylazo)-4, 5-dihydroxyl-2,7-naphthalenedisulfonic acid, which is a prominentinorganic chromogenic reagent. Its aqueous solution can be bleached to colorless by stannouschloride in hydrochloric acid media. The cause of the fading is due to reduction reaction, for-ming 3,6-diaminochromotropic acid, o-arsenoaniline and 2,6-dibromo-4-chloroaniline. The redu-ction products are verified by UV-visible spectra and chemical tests, namely isocyanide and di-azonium salt formations. |
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| Keywords: | Reduction DBC-Arsenazo Stannous chloride |
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