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Chemicals Under Consideration for Toxicity Factor Development

The page contains chemicals under consideration for toxicity factor development by the TCEQ Toxicology Division along with toxicity data requests for those chemicals.
Toxicity Data Request

NEW The Toxicology Division is requesting toxicity data for the PFAS compounds listed below through December 1, 2021.

Interested parties are encouraged to submit any toxicity data you may have to support the Toxicology Division's update of TCEQ’s PFAS toxicity factors.

Please note, the submittal of toxicity data is voluntary; examples of the type of data we are seeking are: laboratory toxicity studies, human exposure/epidemiology studies, unpublished/industrial reports, risk assessments, and any other information that might not be publicly available.

List PFAS Compound Name CASRN TCEQ Acronym/ Synonym
1 Perfluorobutanesulfonic acid 375-73-5 PFBS
2 Perfluorodecanoic acid 335-76-2 PFDA
3 Perfluorododecanoic acid 307-55-1 PFDoA
4 Perfluorohexanoic acid 307-24-4 PFHxA
5 Perfluorononanoic acid 375-95-1 PFNA
6 Perfluorooctanesulfonic acid 1763-23-1 PFOS
7 Perfluorooctanoic acid 335-67-1 PFOA
8 Perfluoroheptanoic acid 375-85-9 PFHpA
9 Perfluorohexanesulfonic acid 355-46-4 PFHxS
10 Perfluoroundecanoic acid 2058-94-8 PFUnA
11 Perfluorobutanoic acid 375-22-4 PFBA
12 Perfluorotetradecanoic acid 376-06-7 PFTeDA
13 Perfluoropentanoic acid 2706-90-3 PFPeA
14 Perfluorotridecanoic acid 72629-94-8 PFTrDA
15 Perfluorooctanesulfonamide 754-91-6 PFOSA
16 Perfluorodecane sulfonate 67906-42-7 PFDS

How To Submit Data


Regular mail:
Toxicology, Risk Assessment, and Research Division, MC 168
Texas Commission on Environmental Quality
P.O. Box 13087
Austin, TX 78711-3087

Mail delivery services:
Toxicology, Risk Assessment, and Research Division, MC 168
Texas Commission on Environmental Quality
12100 Park 35 Circle, Bldg. F
Austin, TX 78753

Contact the TCEQ About DSDs and Fact Sheets

Call:      877-992-8370 (toll free) or 512-239-1795


Write:   Texas Commission on Environmental Quality
            Toxicology, Risk Assessment, and Research Division, MC 168
            P.O. Box 13087 
            Austin, TX 78711-3087

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