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topic 7368

How to Use Steel Pickling Inhibitor?


In a previous letter [ltr. no . 6622] I was told that 1:4 butyne-diol is a good inhibitor for steel pickling (in 5% sulphuric acid), used at .0-.5%. My question is whether or not there is any specific way to add the inhibitor to the pickling bath, or is it simply dissolved into the bath.

Ron Patel
- Buffalo, New York


You should dilute with water at least 50-50, mix and broadcast over the surface of the acid tank.

Bill Hemp
tech svc. w/ chemical supplier - Grand Rapids, Michigan


Experiences using acid inhibitor on pickling line processes. Our experience during the try-out were an extrange formation of clusters on filters located our acid regeneration plant.

Yadir Garza
Pickling process engineer - Monterrey, Mexico

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