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

HomeFAQsSuggested
Books
Help
Wanteds
Advertise
on this site
FORUM
current topics

60,000 Q&A topics -- Education, Aloha, & Fun

topic 8628

Chromate Conversion Hazard?


2001

Is the chromate conversion (Alodine/alocrom) FINISH of al.alloy, (not the application process), at all hazardous if not painted?

David Wibrow
- Gloucester, UK


2001

That's an excellent question to which I've never seen an authoritative response, only conjecture. So I'll add my conjecture!

There are some problems that are too complex to solve. If you snip a maple leaf off a high branch of a tree on a still day, all of the world's computers can't tell you whether it will land North, South, East, or West of where it hung, because of the unfathomable complexity of the aerodynamics.

Hexavalent chromium is considered carcinogenic in the U.S.A.; but the relationship between cancer and even fairly severe industrial exposure to hexavalent chromium seems limited and difficult to prove or disprove. So I suspect that to demonstrate that very occasional skin exposure to a dried gel of hexavalent chromium a few millionths of an inch thick is carcinogenic would probably take an astronomical, utterly impractical sample size and control sample size, such that maybe there simply is no current authoritative answer no matter how hard we look.

But if anybody has accumulated any data on this, or is an epidemiologist or epistemologist we'd love it if they'd chime in.

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

adv.   anoplateyoutube

Q, A, or Comment on THIS thread SEARCH for Threads about ... My Topic Not Found: Start NEW Thread

Disclaimer: It's not possible to 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 may be deliberately harmful.

  If you need a product/service, please check these Directories:

JobshopsCapital Equip. & Install'nChemicals & Consumables Consult'g, Train'g, SoftwareEnvironmental Compliance


©1995-2020 finishing.com, Inc., Pine Beach, NJ   -   About finishing.com   -  Privacy Policy
How Google uses data when you visit this site.