No registration or passwords; no pop-up ads -- just aloha, fun, & answers.
(as an eBay Partner & Amazon Affiliate earns from qualifying purchases).
Home /
T.O.C.
Fun
FAQs
Good
Books
Ref.
Libr.
Advertise
 
Help
Wanted
Current
Q&A's
Site 🔍
Search
pub  Where the
world gathers for metal finishing
Q&As since 1989



-----

Sulfuric Acid turned brownish color




When I first purchased the acid it was clear in color, I used about 5 gallons and then sealed it up. Over several months the acid has turned brown in color.

What happened?

My tank is plastic.

I know the brown acid you aren't supposed to use. I called up the company I purchased and they said it was 93% or better and the brown color is just a reaction with the oxygen in the air.

(the reason I am asking is because when I anodize I get a matte finish toward the edges of the parts)

Garrett Pyros
hobbyist - Tampa, Florida
February 5, 2010




(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:

 
Jobshops
Capital
Equipment
Chemicals &
Consumables
Consult'g, Train'g
& Software


About/Contact  -  Privacy Policy  -  ©1995-2024 finishing.com, Pine Beach, New Jersey, USA  -  about "affil links"