How to complete the reaction in a dinitration

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Why can a first nitration be done at 0 degrees Celsius but the ice bath is removed to complete the reaction in a dinitration of 8-hydroxyquinoline with HNO3 and H2SO4?

Reference no: EM13213773

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How to complete the reaction in a dinitration : Why can a first nitration be done at 0 degrees Celsius but the ice bath is removed to complete the reaction in a dinitration
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