Questions or Comments: tox@tceq.texas.gov
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About the Chemicals Under Consideration for Toxicity Factor Development

The Toxicology Division sends list serve announcements and encourages interested parties to submit relevant technical data.
Chemicals are selected for one or more of the following reasons:
  • they have been detected in air monitoring
  • permits are frequently issued for them
  • the public has expressed concerns about them
Toxicity Data Request

NEWThe Toxicology Division is requesting toxicity data (this is an updated request) for consideration in the development of toxicity factors for the following chemicals through October 16, 2020:

Chemical CAS Number
Beryllium and beryllium compounds 7440-41-7 (Be)
Tert-butyl alcohol 75-65-0
Ethyl tert-butyl ether 637-92-3
Methyl isobutyl ketone 108-10-1
Acrylic acid 79-10-7

How To Submit Data:

e-mail: tox@tceq.texas.gov or mail to:

Regular mail:

Toxicology Division, MC 168

Texas Commission on Environmental Quality

P.O. Box 13087

Austin, TX 78711-3087

Mail delivery services:

Toxicology Division, MC 168

Texas Commission on Environmental Quality

12100 Park 35 Circle, Bldg. F

Austin, TX 78753

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Instructions on how to join the Toxicology Announcement List.