98% sulfuric acid turns red after dilution
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After diluting 98% sulfuric acid to 50%, it did not appear red when observed in the intermediate tank, but turned red once it was poured into the finished product tank. I’d like to know how everyone handles this
It seems very likely that there are iron ions in the sulfuric acid
After dilution, pour it into the finished product tank before the temperature drops; moreover, an acid concentration of 50 will definitely corrode the equipment – how can it not cause redness?