IHS Chemical Week

Chemical Week Magazine :: Regulatory

EPA Recommends Less Stringent Standard for Ammonia

2:27 PM MDT | June 18, 2012 | —Kara Sissell

EPA has issued a draft Integrated Risk Information System (IRIS) assessment for ammonia, including a recommended limit regarding how much is likely safe for a person to inhale throughout a lifetime. The draft recommendation is less stringent than the current standard, the agency says. The preliminary assessment recommends a reference dose concentration (RfC) for ammonia of 0.3 mg/m3, which was derived using a duration-adjusted No Observed Adverse Effect Limit (NOEL) of 3.1/mg/m3. The limit was based on the absence of changes in lung function observed in a 1989...

This information is only available to Chemical Week subscribers.


Forgot your user ID or password?
Click here to have it sent to you.

Not an IHS Chemical Week member yet?

Here's why you should be:

  • 31 issues of Chemical Week magazine in print or digital format
  • Critical daily news and analysis on chemweek.com
  • Free mobile edition 
  • 20+ years of online archives
  • Topical e-newsletters that capture the most impactful events
  • Special issues with a regional or company focus
  • Global Outlook issue

Subscribe now

100% Satisfaction Guarantee
If at any time you are not completely satisfied with IHS Chemical Week, simply notify us and we'll refund the balance of your paid subscription - no problem.

Learn more about group subscriptions and site licenses.


contact us | about us | customer care | privacy policy | sitemap | advertise

ihsCopyright © 2015 IHS, Inc. All rights reserved. Reproduction in whole or in part without permission is prohibited.

North Asia Russia Southeast Asia China India/Pakistan Middle East Eastern Europe Western Europe Central America Canada USA Australia/New Zealand South America Africa