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topic 1977

LOOKING FOR ANTI-TARNISH AGENT APPLIED ON SILVER-PLATED JEWELRY


(1998)

Q. WE ARE AN IMITATION JEWELRY MANUFACTURER IN HONG KONG. FREQUENTLY, WE ARE PRODUCING JEWELRY IN SILVER PLATED. HOWEVER, THE SILVER COLOUR WILL TURN YELLOW AFTER 3 TO 4 MONTHS. CAN ANYONE HELP ME ON THIS MATTER? OR CAN ANYONE INTRODUCE SOME ANTI-TARNISH AGENT TO ME?

THANK FOR YOUR HELP!

ALAN CHAN
MANUFACTURER - HONG KONG


(1998)

A. There are commercial electrolytic chromate passivations for silver. Try your local supplier.

sara michaeli
sara michaeli signature 
Sara Michaeli
chemical process supplier
Tel-Aviv, Israel



Silverware Tarnish Bag


Silver Holloware Bag


Silver Tarnish Strips

(1998)

A. AN ELECTROLYTIC CHROMATE FOR SILVER, MADE BY ENTHONE CO. ALSO AN IMMERSION COATING WITH A PRODUCT CALLED TARNIBAN. I HOPE I COULD BE OF SOME HELP.

JOE LASPADA
(1998)

A. Alan,

Try Degussa ATB 328

Mark Cheng
- Hong Kong


(1998)

A. We have found electrophoretic lacquer to be the most effective tarnish prevention on decorative silver. We have used it for over 7 years with excellent results.

bob lynch
Bob Lynch
     plating company
Sydney, Australia



(1998)

A. Bob mentioned electrophoretic lacquer, well, this is the best solution for tarnish prevention on silver. Actually the silverware in the British Museum in London is protected with electrophoretic lacquer. The only problem is that it is quite expensive.

Sara Michaeli
Sara Michaeli signature 
Sara Michaeli
chemical process supplier
Tel-Aviv, Israel


(1999)

A. Have you considered wrapping jewelry in a protective paper. We manufacture a product called silver saver. You could place jewelry in a plastic bag with a piece of silver saver paper and it would remain tarnish free for quite some time.

M. Lawrence Garman
- Burr Ridge, Illinois


(1999)

A. To help prevent your silver jewelry and products from tarnishing: Store your silver pieces in zip-lock plastic bags along with a small piece of aluminum foil.

Mark Cunha
fine jeweler - Malden, Massachusetts


(2000) -- this entry appended to this thread by editor in lieu of spawning a duplicative thread

We produce silver filigree, our first problem is the silver tarnish and cleaning after. Please help me with a product for use. Thanks!

Guido F. Celi
- Miami, Florida


(2000) -- this entry appended to this thread by editor in lieu of spawning a duplicative thread

I WOULD LIKE TO LEARN HOW I CAN CLEANING ANY KIND OF SILVER PLATE? I HAVE A SILVER SHOP IN IRAN. PLEASE ADVISE IF YOU KNOW OF ANY WAY TO KEEP THE SILVER PLATE CLEAN! (AFTER SEVERAL WEEK, SILVER PLATES BECOME OXCIDE)

Babak Jahromi
C.I.C. - Iran


(2004) -- this entry appended to this thread by editor in lieu of spawning a duplicative thread

Is there a way to prevent silver from tarnishing or at least slowing the process. I can polish it but it would be nice not to have to do it every other week. The silver is kept in a closed cabinet but the cabinet isn't air tight.

Thanks,

Cori Oxman
education - Seoul, AP, South Korea


(2004) -- this entry appended to this thread by editor in lieu of spawning a duplicative thread

How can I protect silver from getting black in a window-shop.

Jan Groos
goldsmith - Den Bosch, Noord-Brabant, The Netherlands


Dear readers, we have dozens of letters on line about this subject and there isn't a "single best answer" that covers all circumstances.

There are a number of different anti-tarnish approaches ranging from the chromates and electrophoretic lacquers already mentioned, through hard coats thru rhodium plating, etc. You can read about all of them through patient application of our search engine. Or, an article entitled "The Protection of Silver Against Atmospheric Attack" by Gay, Berçot and Pagetti, published in the May 2004 issue of Plating & Surface Finishing may help you decide between the many options for preventing tarnish. Good luck! Regards,

Ted Mooney, finishing.com
Teds signature
Ted Mooney, P.E. RET
finishing.com
Pine Beach, New Jersey


(2007)

Not one person has given a satisfactory reply to this question specially if it refers to anti-tarnish on food containers.

I don't believe that there are no totally satisfactory answers in this day and age that satisfy all requirements like long life of anti-tarnish, no change of colour and appearance, non-toxic and easy to control pollution ( Cr+6 free ), and economical too. I feel that answers are hidden somewhere with proprietary manufacturers who are not forthcoming since this would kill so many existing products.

The simple way to analyse for chemical companies would be :
coating has to be thin and non-toxic, hard so as to last for a longer time, totally transparent so as not change the look, and then so many options would come

Come on you people are such big companies with state of the art research facilities ... the market could be bigger than Viagra for the first one to come out with a solution.

deepak whorra Deepak Whorra
     silver craftwork
New Delhi, India


April 17, 2008

Is there a practical and safe way to apply lacquer to silver/plate to prevent tarnish? I've sprayed acrylic lacquers, but it makes the finish so dull that it's unattractive. Thanks

Kathy T
consumer - Chicago, Illinois


July 19, 2009

A. I have finally hit upon the right Lacquer that is so easy to apply, does not affect the shine ( 98% on a glossometer ), and quite economical too

Deepak Whorra Deepak Whorra
     silver craftwork
New Delhi, India

thumbs up signHi, Deepak. You came to this site two years ago complaining that people were not forthcoming enough on this issue :-)

So we encourage you to publicly share the information you have now acquired. Meanwhile, we'll just read your posting as generic encouragement to people that they should not dismiss easy to apply lacquers. Thanks!

Regards,

Ted Mooney, finishing.com
Teds signature
Ted Mooney, P.E. RET
finishing.com
Pine Beach, New Jersey


July 20, 2009

Hi,

I wanted to know if anyone has heard of or used alkanethiol self assembled monolayers (SAMs) as a means of preventing oxidation of silver. I know from my experiences with SAMs and some XPS work that the SAMs prevent oxidization. I have also read some papers about it too, and they also agree. But I have not found any papers that talk about the long term mechanical strength of these SAMs. So is it feasible to use SAMs as a means of preventing oxidation of silver parts that are handled often, but with only ones hands.

Eric

Eric Lewandowski
hobbyist - Massachusetts


January 22, 2010

Can somebody tell me the latest technology for silver anti-tarnishing?

Deshaka Kottage
- Colombo, Sri Lanka


January 22, 2010

Hi, Deshaka. There is no "silver bullet" for silver. The approaches include chromating, putting organic corrosion inhibitors on the surface, rhodium plating the items, lacquering them, electrophoretic lacquer, SAMs, using corrosion inhibiting packaging, etc.

Some approaches will be good for some applications and poor for others. For example, treating a sealed electronic component with chromates may be a good answer, but treating a food service item with toxic chromates would be a horrible idea. Please describe your specific product and application, and the environment that the parts will see, and people may be able to help you. Good luck.

Regards,

Ted Mooney, finishing.com
Teds signature
Ted Mooney, P.E. RET
finishing.com
Pine Beach, New Jersey


January 29, 2010

Hi Mooney...
We are doing Jewelry items with silver.
So I need to know the best anti tarnishing method for silver Jewelry?
Currently we are using chromate base anti-tarnishing agent. Is it ok to use chromate base anti-tarnishing agents for Jewelry?

Deshaka Kottage
- Colombo, Sri Lanka


January 29, 2010

Hi, Deshaka. I don't know all the environmental standards for your area, and any jewelry industry regulations for wherever you are selling these items. However, my personal opinion is that carcinogenic hexavalent chromate does not belong on jewelry.

Lacquer or a flash of rhodium plating sounds like a better idea. Good luck.

Regards,

Ted Mooney, finishing.com
Teds signature
Ted Mooney, P.E. RET
finishing.com
Pine Beach, New Jersey


May 10, 2011 -- this entry appended to this thread by editor in lieu of spawning a duplicative thread


We are a small factory in Guatemala, Central America.
We make jewelry in silver.
We are interesting to prevent tarnish over silver pieces.

We need some kind of dipping what make this function.

Ulysses Migliozzi Junior
Migliozzi Estudio

ULYSSES MIGLIOZZI JUNIOR
MANAGER OF FACTORY - ANTIGUA GUATEMALA



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