What is reason for pretreatment in diazotization reaction?
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Thus, we can infer that this phenomenon is caused by urea in urine. Urea can react with sodium nitrite [37]; therefore, during the diazo-coupling reaction, PATP reacts with sodium nitrite under acidic conditions to produce diazo compounds. If the reaction is incomplete, urea absorbs some sodium nitrite.
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The diazotization process involves two steps: (1) reaction of aniline with sodium nitrite in ..... way to control swing and/or standing wave effect caused by thin film interference
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