No passwords, No popups, No cost, No AI:
we earn from 'affiliate link' purchases, making the site possible

Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ

finishing.com -- The Home Page of the Finishing Industry

  The authoritative public forum
  for Metal Finishing since 1989

-----

Blackening of white metal

I want to blacken white metal. Is there any chemical to blacken it?

Ajay Singhvi
- Rajasthan, India
2001

If you are talking about white metal as in pewter that is mostly tin there is a chemical oxidising process that is made up with nitric acid 5% by volume and copper sulphate ⇦ this on eBay or Amazon [affil links] 1/3 oz/gal (oz av & US gallon. Parts are simply immersed until the darkness required is achieved then rinsed and dried.

Bob Lynch
plating company - Sydney, Australia
2001

(No "dead threads" here! If this page isn't currently on the Hotline your Q, A, or Comment will restore it)

Q, A, or Comment on THIS thread -or- Start a NEW Thread

Disclaimer: It's not possible to fully diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations might be harmful.

If you are seeking a product or service related to metal finishing, please check these Directories: