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HCl Purity Test

Hi,

We are using 6N and 2N HCl (Purely Laboratory purpose acid) for Sample Dissolution. But I want to know that how pure are these acid. Is there is any procedure to check the purity.

Dipak Kumar Panda
Physical Research Laboratory, Govt unit - Ahmedabad, India
2005

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First of two simultaneous responses --

What impurities are you concerned with? By "purity" do you possibly mean strength or concentration? If you buy analytical reagent grade acids, they come with a typical analysis. (at least in the USA)

James Watts
- Navarre, Florida
2005

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Second of two simultaneous responses --

Since you don't know what impurities it may contain, you need to do a full cation and anion analysis. Virtually all cations can be done by ICP with relative ease and in one shot, but anions may need a bit more diligence. try doing conventional tests for sulphate and nitrate as a start.

Trevor Crichton
R&D practical scientist
Chesham, Bucks, UK
2005