ANI Metal's weekly galvanising newspaper 📰GalvaPress…Eighteenth Edition🤟Editor Geoff Crowley ✒️
Acid strength
To better understand about acid strength
* HCl acid is a gas dissolved in water.
* Soft drinks are carbon dioxide dissolved in water -- similar.
* Pickling in acid stronger than 15% doesn't go any better.
* Too strong acid causes HCl gas to escape the water and go to air, causing corrosion of the building.
* Pickling can continue successfully down to about 4% HCL if the FeCl₂ concentration is correct.
* So it's not the strength of HCl it's the combination of HCl and FeCl₂ that counts.
* You can do the analysis of your acid tanks in-house. Why pay someone else then wait for the results. It's not that difficult.
Keep watching the tips for how to do it.
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