Home /
T.O.C.
FAQs
 
Good
Books
Ref.
Libr.
Advertise
Here
Help
Wanted
Current
Q&A's
Search 🔍
the Site

pub
Free personalized metal finishing help!


Erythorbic Acid substitutes



(-----) 2004

Hello:

We are a minority business company working in Puerto Rico, performing chemical cleaning and passivation for the pharmaceutical and general industry. We will like to know what chemicals can be used to substitute Erythorbic Acid. Erythorbic acid chemical takes part of the acid chelation stage during a passivation procedure. Erythorbic acid is too expensive and unavailable, altogether prohibitive. Erythorbic acid is also known as Isoascorbic acid. Commercial name is Erybate. We will strongly appreciate your recommendation.

Julio C. Nazario
Chemical Cleanings and Passivations - San German, Puerto Rico
^


2004

Citric acid formulations are normally used very effectively and economically for this process in the pharmaceutical industry. These products are available in Puerto Rico. Let us know if you need help.

lee kremer
lee kremer sig
Lee Kremer
Stellar Solutions, Inc.
supporting advertiser
McHenry, Illinois

stellar solutions banner
^


2005

Citric acid will behave like most other acids. If copper is present, it will dissolve and redeposit on steel to present cathodic spots on the steel where corrosion will occur. Even without copper, acid cleaned steel will result in heavy deposits that must be removed manually and the steel surface will rust during rinsing. There are other ways to clean steel that result in little or no sludge and a passivated steel surface much like gun metal.

Fred N. Teumac
- Ft. Myers, Florida, USA
^

----
Ed. note: Please feel free to detail those other ways, Fred.

none
this site made possible by ...
this text gets replaced with bannerText
spacer gets replaced with bannerImages

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    -    ©1995-2022 finishing.com, Pine Beach, New Jersey, USA