OBJECTIVE: To determine the reaction time of Compound borax solution during preparation process. METHODS: According to preparation technology of Compound borax solution, the content change of 3 components, ie. Dicarbonate, phenol and borax in solution A and solution B were investigated after 0, 30, 35, 45, 60, 120, 150, 180, 240, 270, 720 and 1 440 min. The reaction time was determined and preparation technology was validated. RESULTS: The contents of 3 components in samples had no significant difference before and after the reaction time of 240 to 1 440 min at 25 ℃. In validation test, the contents of components in 3 batches of samples were in line with the standard. CONCLUSION: For the preparation of Compound borax solution, the reaction time of solution A and B is 240 min probably.%目的:确定复方硼砂溶液制备过程中的反应时间.方法:按照复方硼砂溶液的制备工艺,分别考察A液与B液室温下混合反应不同时间(0、30、35、45、60、120、150、180、240、270、720、1 440 min)后制备的样品中的3组分即碳酸氢钠、苯酚和硼砂含量的变化,确定完成反应的时间并进行工艺验证.结果:室温25℃下反应240～1 440 min内的样品中3组分的含量前后比较均无显著性差异,工艺验证中3批样品中各组分含量均符合规定.结论:复方硼砂溶液制备中A液与B液反应时间以240 min为宜.
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