Reason for the pinkish color of ammonium sulfate
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What are the reasons why ammonium sulfate is pink in color?
The iron ion level is too high – is the corrosion protection of the tower damaged?
The iron ion level is too high; check for corrosion in the acid pipeline system
The system is severely corroded; a small amount of thiocyanate turns red when it comes into contact with iron ions
Adding a tar demulsifier can improve it