How to measure the concentration of hydrochloric acid! I hope seniors can give me some advice!
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This post was last edited by *nyang3390 on 2011-10-13 09:21. What is a precise and convenient method for measuring the acidity of hydrochloric acid in the pickling tank?
The simplest way is to measure the specific gravity and then convert it into density.
To measure acidity, titration is generally used; for reference, see ISO 904-1976: Hydrochloric acid for industrial use – Determination of total acidity – Titrimetric method
Measuring specific gravity doesn’t seem very feasible! The pickling tank contains not only hydrochloric acid and water
Reply to 1# muxj216: When producing hydrochloric acid, the acid concentration is definitely controlled using the specific gravity method. For other uses, if there are other impurities present, titration is the best option! The specific gravity method is generally quite accurate!
In this neutralization titration, the key is to choose the right indicator, as impurities in the form of scale affect the endpoint
:) Um, thanks to the seniors upstairs! Could you tell me a few options for indicators?
If the pickling tank contains only hydrochloric acid and water, the acid concentration can be determined using the conductivity method or the density method. However, if the acid has been used and the solution already contains many components other than hydrochloric acid, only titration can be employed. DKK Company has online titrators that can measure acidity and alkalinity.
To measure acidity, titration is generally used; for reference, see ISO 904-1976: Hydrochloric acid for industrial use – Determination of total acidity – Titrimetric method
Acid-base titration is the simplest. . . .