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Naxidic Acid for Pickling of Steel

We are using hydrochloric Acid for pickling of HRCA and CRCA materials. At low atmospheric temperatures we find that pickling rate is slower. I came to know that Naxidic acid is a remedy in such situations. Kindly let me know whether the addition of Naxidic acid is advisable. Thanking you.

S.V. Aurobind
plating process supplier - Bangalore, India
2006

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Ask the 'Naxidic acid' vendor for data. It seems to be a conventional pickling acid + proprietary additive.

Ken Vlach [deceased]
- Goleta, California
Finishing.com honored Ken for his countless carefully researched responses. He passed away May 14, 2015.
Rest in peace, Ken. Thank you for your hard work which the finishing world, and we at finishing.com, continue to benefit from.
2006

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Dear Mr. Ken.

I came to know about Naxidic Acid from the vendor's web page. I don't have any idea how it works and its constitutents. Thanks for your reply.

S.V. Aurobind
plating process supplier - Bangalore, India
2006

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This is a trade name for a proprietary additive, or mixture of pickling acid plus proprietary additive, Aurobind. Only the vendor can tell you what it is (and they will tell you very little because it is proprietary). Even if someone else told you what it was and what it did, the vendor is free to reformulate it at any time -- much as a Ford Thunderbird changed from a two-seat sports car to a four-seat luxury car, to a six-seat family car, to a two-seat luxury car at the whim of the trademark holder.

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
2006