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ANALYSIS OF SODIUM SULPHATE IN PICKLING BATH SOLUTION

HI
I AM P.L.PAHWA FROM HISAR AND I AM WORKING WITH M/S JINDAL STAINLESS STEEL LIMITED. I AM WORKING IN QUALITY CONTROL LABORATORY.HERE IS A PICKLING LINE FOR REMOVE THE SCALE AND DURT FROM THE SURFACE OF STAINLESS STEEL STRIP.WE ARE USING ONE TANK OF HNO3+HF(12%+1%) AND SECOND TANK OF H2SO4(10%)AND THIRD ONE OF SODIUM SULPHATE AS NEUTRLIES THE ACID STAINS.WE ARE RECEVING SAMPLE FROM PICKLING LINE FOR ANALYSIS OF SODIUL SULPHATE IN GMS/LITE IN THE GIVEN SAMPLE.PLEASE GUIDE ME HOW I CAN TEST THE SAME BY SOME SIMPLE TITRATION METHOD.

POORAN LAL PAHWA
JINDAL STAINLESS STEEL,HISAR- HISAR(Haryana), INDIA
2005

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2005

You can titrate a known volume of your sodium sulphate solution using a standard barium chloride solution (toxic) using chromate as indicator. You will have to continuously stir the solution and when the white barium chloride turns to a brick red barium chromate precipitate the end point is reached.
Regards,

Dr. Thomas H. Cook
Galvanizing Consultant - Hot Springs, South Dakota, USA

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Q. Dear Dr. Thomas H. Cook ,

You have written the following for titration of Na2SO4 and BaCl2,Please provide us the calculation of Na2SO4 in Gm/Litre

You can titrate a known volume of your sodium sulphate solution using a standard barium chloride solution (toxic) using chromate as indicator. You will have to continuously stir the solution and when the white barium chloride turns to a brick red barium chromate precipitate the end point is reached.
Regards
R.K.Kushwah

R.K.Kushwah
- Angul, Orissa, India
November 11, 2012

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adv.