The authoritative public forum
  for Metal Finishing since 1989
-----

Tarnish Resistance Coating for Silver

My company uses Tarniban-2000 as a tarnish resistance coating on silver plated microwave castings. I know that this tarnish preventative is not chrome based but I need to know if it is an azole organic film or a tin based coating?

George Wenger
- Warren, New Jersey
2006

---

First of two simultaneous responses -- 2006

Hello George,
The only Tarniban version I've used in the past is Tarniban 51. A timely pop-up appeared when I was reading your question, your Tarniban supplier! If it is not on the MSDS, call the supplier and ask them. Ted Mooney does a great job on this website, doesn't he?

Regards,

Mark Baker
process engineer - Malone, New York

 Thanks for the kind words, Mark. Like everyone else, we like to be appreciated. Speaking of which, thanks for your dozens of fine replies in the last few months. It is the sharing of experience by the band of regular responders like yourself that creates most of the value that the site offers.

---

Second of two simultaneous responses --

OK, it's late Friday night and I'm going to get up on a soap box... after all you have a RIGHT TO KNOW and OSHA says you do. The plating industry spends dozens upon dozens of hours ($$$$) to collect, update, order, discard, etc. MSDS's for everything that enters our tanks. Your firm does likewise - get ahold of the Tarniban 2000 MSDS, look up the manufacturer's name and call them!

Word of caution: some Tarniban's do indeed contain hex chrome (i.e. chromates) so be certain of which designation / formulation you're using. The manufacturer will likely be Technic who is located in Rhode Island.

Milt Stevenson, Jr.
Syracuse, New York
2006

---

Check the MSDS.
If necessary, request one from the supplier, Technic.

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