No passwords, no registration, no paywalls, no popups, no AI

As an Amazon Associate & eBay Partner we earn from affil links

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

Search our quarter-million Q&As

Home of the finishing HOTLINE since 1989

-----

32% HCl solution turns reddish in storage

Q. Hi,

I would like to thank you for this interesting useful site. I am a student and I have a research project regarding HCl product. I have a problem with changing color for HCl 30%: when it's stored it becomes reddish. I don't know why and I want to know what is the possible reasons for this problem. Is this changing in color due to iron content or storage material?

Your help is highly appreciated

Salah Alomar
Kuwait University - Kuwait
2006

A. HCl will turn a tan or off yellow or yellow green with age, but not red or orange or dark brown. You very probably have contaminated it.

James Watts
- Navarre, Florida
2006

Sorry! Finishing.com is temporarily Read-Only.
Ted Mooney is retiring but I have several offers to take it over.
We're working hard to make sure we find it the best new home.

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: