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Is Sulphuric acid a foaming agent?
In a process for the regeneration of aqueous waste sulfuric acid by distilling off water during which the acid tends to foam, the improvement which comprises adding an aromatic nitro compound free from amino and hydroxy groups in an amount sufficient to suppress foam formation.
In a process for the regeneration of aqueous waste sulfuric acid by distilling off water during which the acid tends to foam, the improvement which comprises adding an aromatic nitro compound free from amino and hydroxy groups in an amount sufficient to suppress foam formation.