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topic 59103

What can be made from SODIUM BISULPHATE (a byproduct of CHROMIC ACID manufacturing)

December 27, 2012

Q. Hello -

My friend is a CHROMIC ACID manufacturer. Sodium Bisulphate is a byproduct of the CHROMIC ACID.

At this moment, Sodium bisuplhate is discarded. I am posting here to check if it can be used for some other product instead throwing/discarding it.

Response to the question would be highly appreciated.

Thanks in advance.


Rajesh Mishra
- Delhi, India

December 30, 2012

A. Hello Rajesh,

The sodium bisulphate is used in many things, and is sold as "dry acid" by many companies. As the sodium bisulfate your friend now discard is contaminated with sodium chromate, you cannot do anything with it before you remove all hex chrome of it. Really, I have not met anyone that does anything with this byproduct because of the cost of that treatment.

If anyone has, I invite you to give Rajesh some idea of what can be done with this product.

Hope you can help your friend! Happy new year,

Daniel Montanes
- Cañuelas, Buenos Aires, Argentina

January 2, 2013

Thank you Daniel Montanes for taking time to answer.

Q. Do you have some more information or links which can provide more information on same subject as stated by you.


Rajesh Mishra
- Delhi, India

March 19, 2013

A. Hello Rajesh,

Sorry for the radio silence, I was really busy with some work issues and did not see your reply.

You can see this I mentioned in this MSDS:

This "Dry Acid" is the major ingredient for many pickling salts, but, as I mentioned before, the hex chrome in the solid your friend is discarding is an issue that I cannot think of a safe way to solve.

Hope this data can help you and your friend! Best regards,

Daniel Montanes
- Canuelas, Buenos Aires, Argentina

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