Summary for rocheltex analysis method Discussion
Rocheltex analysis method is the focus of this thread, with Barkin Ugurer asking how to measure Macdermid Enthone METEX Rocheltex in a cyanide-based copper plating bath. Leon Gusak replies that, from the name, the product likely contains Rochelle salt, but because it is a proprietary chemical mix, the best source for an analysis method is the supplier/manufacturer. When Barkin says the local supplier had no method and Macdermid had not replied, the discussion shifts to practical contact issues: the response notes that email can be missed and suggests using Macdermid’s website question-submittal form instead. No one provides a direct lab method or a way to calculate Rocheltex from %KOH, so the thread’s practical takeaway is to seek the manufacturer’s guidance rather than infer composition from bath chemistry.
Current question and answers:
March 30, 2021
Q. We are using Electroplated copper from cyanide-based plating bath on our firm. I am looking for a Rocheltex analysis method but I could not find any method.
Product Name:
Macdermid Enthone
METEX Rocheltex
I will be appreciative if anybody can help.
Thanks a lot,
Barkin UGURER
– Ankara Turkey
A. Hello Barkin
From the name – most likely this component includes Rochelle salt
⇦ on
or
Amazon [affil link]
. As this is a proprietary chemical mix, I would go to the supplier/manufacturer to get their recommendation for analysis.
Good luck
Leon Gusak
– Winnipeg, Canada
April 8, 2021
Q. We tried to reach our local supplier for analysis but they don’t have too. I sent an e-mail to Macdermid but I didn’t get any answer.
If I know the %KOH in bath, can I find %by vol. Rocheltex in bath?
Barkin UGURER [returning]
– Ankara Turkey
April 9, 2021
A. Hi Barkin. Spam e-mail is a curse, so they may not have got your mail. I get 700-800 a day to my current e-mail address, while hundreds more directed to my outdated e-mail addresses go direct to the trash unseen. And Macdermid probably gets more than that. I suggest you go to their site and use their question submittal form instead.
Luck & Regards,
Ted Mooney, P.E. RET
Striving to live Aloha
finishing.com – Pine Beach, New Jersey
Need quick confidential answers? $25
Need project assistance? $100/hr.
April 2021
A. Hi Barkin
Rochelle salt is Sodium-Potassium Tartrate.
If your bath is based on Potassium salts only – by using some advanced method for Sodium determination (ICP-MS? ICP-OES?) – you can calculate the amount of Rochelle salt.
Or opposite, if your bath is based on Sodium salts only – by determining Potassium you can calculate the Rochelle salt.
However, as it is proprietary mix, you may not know all the additives. I would put an effort to get a help from the manufacturer of the chemical…
Good luck.
Leon Gusak
– Winnipeg, Canada
April 21, 2021
⇩ Similar, related, Q&As — oldest first ⇩
Q. We are reviewing U.S. Army technical manuals and some require the use of Rocheltex in plating solutions. It apparently is a discontinued product but we are needing to determine its availability for certain and if there is a replacement.
Thank you,
George Hanna
Titan Corp. – Huntsville, Alabama
2002
A. I was unaware that Macdermid had discontinued the product. It is an anode corroder for cyanide copper plating used as a replacement for Rochelle Salts (a generic material. Manufacturers of cyanide copper plating additives make similar products that are generally interchangeable.
Gene Packman
process supplier – Great Neck, New York
2002