Metal finishers helping each other -- No cost, No registration, No damn popups
(we earn from 'affiliate link' purchases, making the site possible)

Curated with aloha by
Ted Mooney, P.E. RET

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

  The authoritative public forum
  for Metal Finishing 1989-2025

Thread 543/23

Ratio for caustic soda solution

What should be the ratio for caustic soda ⇦liquid caustic soda in bulk on Amazon [affil link] solution used for degreasing in hot dip galvanizing

Suresh T.
- Noida,U.P, India
February 10, 2010
publicly reply to Suresh T.

Suresh,

Ratio of caustic to what?

Brian Terry
Aerospace - Yeovil, Somerset, UK
February 12, 2010
publicly reply to Brian Terry

February 12, 2010

Sir:

Most hot dip galvanizers that use H2SO4 (sulfuric acid)pickle use caustic soda ⇦liquid caustic soda in bulk on Amazon [affil link] (sodium hydroxide) at 10% solution. Most hot dip galvanizers that use HCl (hydrochloric acid) pickle use caustic soda at about 5% to 8%. The usual temperature for caustic soda solution is from about 60C to 70C.

Regards,

Dr. Thomas H. Cook
Galvanizing Consultant - Hot Springs, South Dakota, USA
publicly reply to Dr. Thomas H. Cook

(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: