为确定稀硝酸溶液中甲醛与甲基肼能否发生缩合反应,考察了16℃下在稀硝酸溶液中甲醛与甲基肼(MMH)的缩合反应。该缩合反应的反应速率较慢,需5h以上反应才能达到平衡;反应后的溶液变为黄色。所生成的产物在340nm处和400～450nm处有最大吸收峰。产物经GC-MS In order to determine whether the condensation reaction between formaldehyde and methyl hydrazine in dilute nitric acid was carried out, the condensation reaction between formaldehyde and methylhydrazine (MMH) in dilute nitric acid at 16 ℃ was investigated. The reaction rate of the condensation reaction is slow, and it takes more than 5h reaction to reach equilibrium; the solution after the reaction turns yellow. The resulting product has a maximum absorption peak at 340 nm and at 400-450 nm. The product was subjected to GC-MS