Minimal Risk Levels (MRLs) for Hazardous Substances


PDF of ATSDR MRLs - March 2024  pdf icon  [83 KB]
MRLs in draft Toxicological Profiles are provisional.
See bottom of table for more information.

ATSDR Minimal Risk Level (MRLs) - March 2024
Route Duration MRL Factors* Endpoint Draft/ Final Cover Date CAS Number
 
ACENAPHTHENE
Oral Int. 0.6 mg/kg/day 300 Hepatic Final 08/1995 83-32-9
 
ACETONE
Oral Int. 0.6 mg/kg/day 100 Hemato. Final 06/2022 67-64-1
Inh. Acute 8 ppm 30 Neurol. Final 06/2022 67-64-1
 
ACROLEIN
Inh. Acute 0.003 ppm 100 Resp. Final 08/2007 107-02-8
Inh. Int. 0.00004 ppm 300 Resp. Final 08/2007 107-02-8
Oral Int. 0.004 mg/kg/day 100 Gastro. Final 08/2007 107-02-8
 
ACRYLAMIDE
Oral Acute 0.01 mg/kg/day 30 Repro. Final 12/2012 79-06-1
Oral Int. 0.001 mg/kg/day 30 Neurol. Final 12/2012 79-06-1
Oral Chr. 0.001 mg/kg/day 30 Neurol. Final 12/2012 79-06-1
 
ACRYLONITRILE
Oral Chr. 0.09 µg/kg/day 1000 Gastro. Draft 08/2023 107-13-1
Oral Int. 0.02 mg/kg/day 100 Gastro. Draft 08/2023 107-13-1
Inh. Int. 0.9 ppb 30 Resp. Draft 08/2023 107-13-1
Oral Acute 0.09 mg/kg/day 100 Develop. Draft 08/2023 107-13-1
 
ALDRIN
Oral Acute 2 ug/kg/day 100 Develop. Final 06/2022 309-00-2
Oral Chr. 0.04 ug/kg/day 1000 Hepatic Final 06/2022 309-00-2
 
ALUMINUM
Oral Int. 1 mg/kg/day 30 Neurol. Final 09/2008 7429-90-5
Oral Chr. 1 mg/kg/day 90 Neurol. Final 09/2008 7429-90-5
 
AMMONIA
Inh. Acute 1.7 ppm 30 Resp. Final 09/2004 7664-41-7
Inh. Chr. 0.1 ppm 30 Resp. Final 09/2004 7664-41-7
 
ANTHRACENE
Oral Int. 10 mg/kg/day 100 Hepatic Final 08/1995 120-12-7
 
ANTIMONY
Inh Acute 0.001 mg/m3 30 Resp. Final 10/2019 7440-36-0
Inh. Int. 0.001 mg/m3 30 Resp. Final 10/2019 7440-36-0
Inh. Chr. 0.0003 mg/m3 30 Resp. Final 10/2019 7440-36-0
Oral Acute 1 mg/kg/day 100 Hepatic Final 10/2019 7440-36-0
Oral Int. 0.0006 mg/kg/day 100 Metab. Final 10/2019 7440-36-0
 
ARSENIC
Oral Acute 0.005 mg/kg/day 10 Gastro. Final 08/2007 7440-38-2
Oral Chr. 0.0003 mg/kg/day 3 Dermal Final 08/2007 7440-38-2
 
ATRAZINE
Oral Acute 0.01 mg/kg/day 100 Body Wt. Final 09/2003 1912-24-9
Oral Int. 0.003 mg/kg/day 300 Repro. Final 09/2003 1912-24-9
 
1-BROMOPROPANE
Inh. Acute 1 ppm 30 Neurol. Final 08/2017 106-94-5
Inh. Int. 0.1 ppm 30 Neurol. Final 08/2017 106-94-5
Inh. Chr. 0.02 ppm 30 Neurol. Final 08/2017 106-94-5
Oral Acute 0.2 mg/kg/day 100 Neurol. Final 08/2017 106-94-5
 
2-BUTANONE
Inh. Acute 1 ppm 100 Neurol. Final 10/2020 78-93-3
 
2-BUTOXYETHANOL
Inh. Acute 6 ppm 9 Hemato. Final 08/1998 111-76-2
Inh. Int. 3 ppm 9 Hemato. Final 08/1998 111-76-2
Inh. Chr. 0.2 ppm 3 Hemato. Final 08/1998 111-76-2
Oral Acute 0.4 mg/kg/day 90 Hemato. Final 08/1998 111-76-2
Oral Int. 0.07 mg/kg/day 1000 Hepatic Final 08/1998 111-76-2
 
BARIUM, SOLUBLE SALTS
Oral Int. 0.2 mg/kg/day 300 Renal Final 08/2007 7440-39-3
Oral Chr. 0.2 mg/kg/day 300 Renal Final 08/2007 7440-39-3
 
BENZENE
Inh. Acute 0.009 ppm 300 Immuno. Final 08/2007 71-43-2
Inh. Int. 0.006 ppm 300 Immuno. Final 08/2007 71-43-2
Inh. Chr. 0.003 ppm 10 Immuno. Final 08/2007 71-43-2
Oral Chr. 0.0005 mg/kg/day 30 Immuno. Final 08/2007 71-43-2
 
BERYLLIUM
Inh. Chr. 1 ng/m3 30 Immuno. Final 09/2023 7440-41-7
 
BIS(2 CHLOROETHYL)ETHER (BCEE)
Inh. Int. 0.02 ppm 1000 Body Wt. Final 10/2017 111-44-4
 
BIS(CHLOROMETHYL)ETHER (BCME)
Inh. Int. 0.0003 ppm 100 Resp. Final 11/2017 542-88-1
 
BORON AND COMPOUNDS
Inh. Acute 0.3 mg/m3 3 Resp. Final 11/2010 7440-42-8
Oral Acute 0.2 mg/kg/day 100 Develop. Final 11/2010 7440-42-8
Oral Int. 0.2 mg/kg/day 66 Develop. Final 11/2010 7440-42-8
 
BROMODICHLOROMETHANE
Oral Acute 0.07 mg/kg/day 100 Develop. Final 03/2020 75-27-4
Oral Chr. 0.008 mg/kg/day 100 Hepatic Final 03/2020 75-27-4
 
BROMOFORM
Oral Acute 0.7 mg/kg/day 100 Hepatic Final 08/2005 75-25-2
Oral Int. 0.2 mg/kg/day 100 Hepatic Final 08/2005 75-25-2
Oral Chr. 0.02 mg/kg/day 3000 Hepatic Final 08/2005 75-25-2
 
BROMOMETHANE
Inh. Int. 0.02 ppm 90 Neurol. Final 03/2020 74-83-9
Inh. Chr. 0.001 ppm 90 Resp. Final 03/2020 74-83-9
 
2-CHLOROPHENOL
Oral Int. 0.08 mg/kg/day 100 Reprod. Final 06/2022 95-57-8
 
4-CHLOROPHENOL
Oral Int. 0.9 mg/kg/day 100 Reprod. Final 06/2022 106-48-9
 
CADMIUM
Inh. Acute 0.00003 mg/m3 300 Resp. Final 09/2012 7440-43-9
Inh. Chr. 0.00001 mg/m3 9 Renal Final 09/2012 7440-43-9
Oral Int. 0.0005 mg/kg/day 100 Musculo. Final 09/2012 7440-43-9
Oral Chr. 0.0001 mg/kg/day 3 Renal Final 09/2012 7440-43-9
 
CARBON DISULFIDE
Inh. Chr. 0.3 ppm 30 Neurol. Final 08/1996 75-15-0
Oral Acute 0.01 mg/kg/day 300 Hepatic Final 08/1996 75-15-0
 
CARBON TETRACHLORIDE
Inh. Int. 0.03 ppm 30 Hepatic Final 08/2005 56-23-5
Inh. Chr. 0.03 ppm 30 Hepatic Final 08/2005 56-23-5
Oral Acute 0.02 mg/kg/day 300 Hepatic Final 08/2005 56-23-5
Oral Int. 0.007 mg/kg/day 100 Hepatic Final 08/2005 56-23-5
 
CESIUM
Rad. Acute 4 mSv 3 Develop. Final 04/2004 7440-46-2
Rad. Chr. 1 mSv/yr 3 Other Final 04/2004 7440-46-2
 
CHLORDANE
Inh. Int. 0.0002 mg/m3 100 Hepatic Final 02/2018 12789-03-6
Inh. Chr. 0.00002 mg/m3 1000 Hepatic Final 02/2018 12789-03-6
Oral Acute 0.001 mg/kg/day 1000 Develop. Final 02/2018 12789-03-6
Oral Int. 0.0006 mg/kg/day 100 Hepatic Final 02/2018 12789-03-6
Oral Chr. 0.0006 mg/kg/day 100 Hepatic Final 02/2018 12789-03-6
 
CHLORDECONE
Oral Acute 0.01 mg/kg/day 100 Neurol. Final 10/2020 143-50-0
Oral Int. 3 ug/kg/day 100 Neurol.,Reprod. Final 10/2020 143-50-0
Oral Chr. 0.9 ug/kg/day 100 Renal Final 10/2020 143-50-0
 
CHLORFENVINPHOS
Oral Acute 0.002 mg/kg/day 1000 Neurol. Final 09/1997 470-90-6
Oral Int. 0.002 mg/kg/day 1000 Immuno. Final 09/1997 470-90-6
Oral Chr. 0.0007 mg/kg/day 1000 Neurol. Final 09/1997 470-90-6
 
CHLORINE
Inh. Acute 0.06 ppm 3 Resp. Final 11/2010 7782-50-5
Inh. Int. 0.002 ppm 90 Resp. Final 11/2010 7782-50-5
Inh. Chr. 0.00005 ppm 30 Resp. Final 11/2010 7782-50-5
 
CHLORINE DIOXIDE
Inh. Int. 0.001 ppm 300 Resp. Final 09/2004 10049-04-4
 
CHLORITE
Oral Int. 0.1 mg/kg/day 30 Develop. Final 09/2004 7758-19-2
 
CHLOROBENZENE
Oral Int. 0.07 mg/kg/day 100 Hepatic Final 10/2020 108-90-7
 
CHLOROETHANE
Inh. Acute 13 ppm 30 Develop. Draft 01/2024 75-00-3
Inh. Int. 13 ppm 300 Repro. Draft 01/2024 75-00-3
 
CHLOROFORM
Inh. Acute 1 ppb 30 Resp. Draft 01/2024 67-66-3
Inh. Int. 0.8 ppb 90 Resp. Draft 01/2024 67-66-3
Inh. Chr. 0.4 ppb 300 Resp. Draft 01/2024 67-66-3
Oral Acute 0.3 mg/kg/day 100 Hepatic Draft 01/2024 67-66-3
Oral Int. 0.1 mg/kg/day 100 Hepatic Draft 01/2024 67-66-3
Oral Chr. 0.02 mg/kg/day 100 Hepatic Draft 01/2024 67-66-3
 
CHLOROMETHANE
Inh. Acute 0.5 ppm 90 Neurol. Final 09/2023 74-87-3
Inh. Int. 0.3 ppm 30 Neurol. Final 09/2023 74-87-3
Inh. Chr. 0.03 ppm 300 Neurol. Final 09/2023 74-87-3
 
CHLORPYRIFOS
Oral Acute 0.003 mg/kg/day 10 Neurol. Final 09/1997 2921-88-2
Oral Int. 0.003 mg/kg/day 10 Neurol. Final 09/1997 2921-88-2
Oral Chr. 0.001 mg/kg/day 100 Neurol. Final 09/1997 2921-88-2
 
CHROMIUM(III) INSOL. PARTICULATES
Inh. Int. 0.005 mg/m3 90 Resp. Final 09/2012 16065-83-1
 
CHROMIUM(III) SOLUBLE PARTICULATES
Inh. Int. 0.0001 mg/m3 300 Resp. Final 09/2012 16065-83-1
 
CHROMIUM(VI)
Oral Int. 0.005 mg/kg/day 100 Hemato. Final 09/2012 18540-29-9
Oral Chr 0.0009 mg/kg/day 100 Gastro. Final 09/2012 18540-29-9
 
CHROMIUM(VI), AEROSOL MISTS
Inh. Int. 0.000005 mg/m3 100 Resp. Final 09/2012 18540-29-9
Inh. Chr. 0.000005 mg/m3 100 Resp. Final 09/2012 18540-29-9
 
CHROMIUM(VI), PARTICULATES
Inh. Int. 0.0003 mg/m3 30 Resp. Final 09/2012 18540-29-9
 
COBALT
Inh. Chr. 0.1 ug/m3 10 Resp. Draft 01/2023 7440-48-4
Oral Acute 0.03 mg/kg/day 30 Hemato. Draft 01/2023 7440-48-4
Oral Int. 0.03 mg/kg/day 30 Hemato. Draft 01/2023 7440-48-4
 
COPPER
Oral Acute 0.02 mg/kg/day 3 Gastro. Draft 04/2022 7440-50-8
Oral Int. 0.02 mg/kg/day 3 Gastro. Draft 04/2022 7440-50-8
 
CRESOLS
Oral Int. 0.1 mg/kg/day 100 Resp. Final 09/2008 1319-77-3
Oral Chr. 0.1 mg/kg/day 1000 Resp. Final 09/2008 1319-77-3
 
CYANIDE, SODIUM
Oral Int. 0.05 mg/kg/day 100 Repro. Final 07/2006 143-33-9
 
CYHALOTHRIN
Oral Acute 0.01 mg/kg/day 100 Gastro. Final 09/2003 68085-85-8
Oral Int. 0.01 mg/kg/day 100 Gastro. Final 09/2003 68085-85-8
 
CYPERMETHRIN
Oral Acute 0.02 mg/kg/day 1000 Neurol. Final 09/2003 52315-07-8
 
DIBROMOCHLOROMETHANE
Oral Acute 0.1 mg/kg/day 300 Hepatic Final 08/2005 124-48-1
Oral Chr. 0.09 mg/kg/day 300 Hepatic Final 08/2005 124-48-1
 
1,1-DICHLOROETHENE
Inh. Int. 1 ppb 30 Resp. Final 04/2022 75-35-4
Inh. Chr. 1 ppb 30 Resp. Final 04/2022 75-35-4
Oral Chr. 0.05 mg/kg/day 100 Hepatic Final 04/2022 75-35-4
 
1,1-DIMETHYLHYDRAZINE
Inh. Int. 0.0002 ppm 300 Hepatic Final 09/1997 57-14-7
 
1,2-DIBROMO-3-CHLOROPROPANE
Inh. Int. 0.0002 ppm 100 Repro. Final 04/2018 96-12-8
Oral Int. 0.002 mg/kg/day 1000 Repro. Final 04/2018 96-12-8
 
1,2-DICHLOROBENZENE
Oral Acute 0.7 mg/kg/day 100 Hepatic Final 08/2006 95-50-1
Oral Int. 0.6 mg/kg/day 100 Hepatic Final 08/2006 95-50-1
Oral Chr. 0.3 mg/kg/day 100 Renal Final 08/2006 95-50-1
 
1,2-DICHLOROETHANE
Inh. Acute 0.3 ppm 30 Resp. Draft 01/2022 107-06-2
Oral Int. 0.2 mg/kg/day 300 Renal Draft 01/2022 107-06-2
 
1,2-DICHLOROETHENE, TRANS-
Inh. Acute 3 ppm 100 Ocular Draft 08/2023 156-60-5
Oral Int. 0.2 mg/kg/day 100 Immuno. Draft 08/2023 156-60-5
 
1,2-DICHLOROPROPANE
Inh. Acute 0.02 ppm 90 Resp. Final 11/2021 78-87-5
Inh. Int. 2 ppb 30 Resp. Final 11/2021 78-87-5
Oral Acute 0.3 mg/kg/day 100 Hemato. Final 11/2021 78-87-5
Oral Int. 0.07 mg/kg/day 1000 Hemato. Final 11/2021 78-87-5
 
1,2-DIMETHYLHYDRAZINE
Oral Int. 0.0008 mg/kg/day 1000 Hepatic Final 09/1997 540-73-8
 
1,2-DIPHENYLHYDRAZINE
Oral Int. 0.05 mg/kg/day 100 Hepatic Final 10/2020 122-66-7
 
1,3-DICHLOROBENZENE
Oral Acute 0.4 mg/kg/day 100 Hepatic Final 08/2006 541-73-1
Oral Int. 0.02 mg/kg/day 100 Endocr. Final 08/2006 541-73-1
 
1,3-DICHLOROPROPENE
Inh. Int. 0.008 ppm 30 Resp. Final 09/2008 542-75-6
Inh. Chr. 0.007 ppm 30 Resp. Final 09/2008 542-75-6
Oral Int. 0.04 mg/kg/day 100 Gastro. Final 09/2008 542-75-6
Oral Chr. 0.03 mg/kg/day 100 Gastro. Final 09/2008 542-75-6
 
1,3-DINITROBENZENE
Oral Acute 0.08 mg/kg/day 100 Repro. Final 06/1995 99-65-0
Oral Int. 0.0005 mg/kg/day 1000 Hemato. Final 06/1995 99-65-0
 
1,4-DICHLOROBENZENE
Inh. Acute 2 ppm 10 Resp. Final 08/2006 106-46-7
Inh. Int. 0.2 ppm 100 Hepatic Final 08/2006 106-46-7
Inh. Chr. 0.01 ppm 30 Resp. Final 08/2006 106-46-7
Oral Int. 0.07 mg/kg/day 100 Hepatic Final 08/2006 106-46-7
Oral Chr. 0.07 mg/kg/day 100 Hepatic Final 08/2006 106-46-7
 
1,4-DIOXANE
Inh. Acute 2 ppm 10 Ocular Final 04/2012 123-91-1
Inh. Int. 0.2 ppm 30 Resp. Final 04/2012 123-91-1
Inh. Chr. 0.03 ppm 300 Resp. Final 04/2012 123-91-1
Oral Acute 5 mg/kg/day 100 Develop. Final 04/2012 123-91-1
Oral Int. 0.5 mg/kg/day 100 Hepatic Final 04/2012 123-91-1
Oral Chr. 0.1 mg/kg/day 100 Hepatic Final 04/2012 123-91-1
 
2,3-DICHLOROPROPENE
Inh. Acute 0.002 ppm 90 Resp. Final 09/2008 78-88-6
 
2,3-DINITROTOLUENE
Oral Acute 0.09 mg/kg/day 3000 Renal Final 02/2016 602-01-7
 
2,4-DICHLOROPHENOL
Oral Int. 0.02 mg/kg/day 100 Immuno. Final 06/2022 120-83-2
 
2,4-DICHLOROPHENOXYACETIC ACID (2,4-D)
Oral Int. 0.2 mg/kg/day 100 Renal Final 07/2020 94-75-7
Oral Chronic 0.2 mg/kg/day 100 Renal Final 07/2020 94-75-7
 
2,4-DINITROPHENOL
Oral Int. 0.07 ug/kg/day 1000 Body Wt. Final 08/2021 51-28-5
 
2,4-DINITROTOLUENE
Oral Acute 0.05 mg/kg/day 100 Neurol. Final 02/2016 121-14-2
Oral Int. 0.007 mg/kg/day 100 Hemato. Final 02/2016 121-14-2
Oral Chr. 0.001 mg/kg/day 100 Hemato. Final 02/2016 121-14-2
 
2,5-DINITROTOLUENE
Oral Acute 0.007 mg/kg/day 300 Hemato. Final 02/2016 619-15-8
 
2,6-DINITROTOLUENE
Oral Acute 0.09 mg/kg/day 100 Hemato. Final 02/2016 606-20-2
Oral Int. 0.004 mg/kg/day 1000 Hemato. Final 02/2016 606-20-2
 
3,4-DINITROTOLUENE
Oral Acute 0.03 mg/kg/day 300 Hemato. Final 02/2016 610-39-9
 
3,5-DINITROTOLUENE
Oral Acute 0.03 mg/kg/day 300 Repro. Final 02/2016 618-85-9
 
4,6-DINITRO-O-CRESOL
Oral Acute 0.004 mg/kg/day 100 Neurol. Final 01/2018 534-52-1
Oral Int. 0.004 mg/kg/day 100 Neurol. Final 01/2018 534-52-1
 
DDD, P,P'-
Oral Acute 0.5 ug/kg/day 1000 Develop. Final 04/2022 72-54-8
Oral Int. 0.5 ug/kg/day 100 Hepatic Final 04/2022 72-54-8
Oral Chr. 0.5 ug/kg/day 100 Hepatic Final 04/2022 72-54-8
 
DDE, P,P'-
Oral Acute 0.5 ug/kg/day 1000 Develop. Final 04/2022 72-55-9
Oral Int. 0.5 ug/kg/day 100 Hepatic Final 04/2022 72-55-9
Oral Chr. 0.5 ug/kg/day 100 Hepatic Final 04/2022 72-55-9
 
DDT, P,P'-
Oral Acute 0.5 ug/kg/day 1000 Develop. Final 04/2022 50-29-3
Oral Int. 0.5 ug/kg/day 100 Hepatic Final 04/2022 50-29-3
Oral Chr. 0.5 ug/kg/day 100 Hepatic Final 04/2022 50-29-3
 
DEET (N,N-DIETHYL-META-TOLUAMIDE)
Oral Int. 1 mg/kg/day 100 Develop. Final 08/2017 134-62-3
 
DI(2-ETHYLHEXYL)PHTHALATE (DEHP)
Inh. Int. 0.2 ppb 300 Develop. Final 01/2022 117-81-7
Oral Acute 3 ug/kg/day 300 Develop. Final 01/2022 117-81-7
Oral Int. 0.1 ug/kg/day 300 Develop. Final 01/2022 117-81-7
 
DIAZINON
Inh. Int. 0.01 mg/m3 30 Neurol. Final 09/2008 333-41-5
Oral Acute 0.006 mg/kg/day 100 Neurol. Final 09/2008 333-41-5
Oral Int. 0.002 mg/kg/day 100 Neurol. Final 09/2008 333-41-5
Oral Chr. 0.0007 mg/kg/day 100 Neurol. Final 09/2008 333-41-5
 
DICHLORVOS
Inh. Acute 0.002 ppm 100 Neurol. Final 09/1997 62-73-7
Inh. Int. 0.0003 ppm 100 Neurol. Final 09/1997 62-73-7
Inh. Chr. 0.00006 ppm 100 Neurol. Final 09/1997 62-73-7
Oral Acute 0.004 mg/kg/day 1000 Neurol. Final 09/1997 62-73-7
Oral Int. 0.003 mg/kg/day 10 Neurol. Final 09/1997 62-73-7
Oral Chr. 0.0005 mg/kg/day 100 Neurol. Final 09/1997 62-73-7
 
DIELDRIN
Oral Chr. 0.05 ug/kg/day 100 Hepatic Final 06/2022 60-57-1
Oral Int. 0.1 ug/kg/day 100 Neurol. Final 06/2022 60-57-1
 
DIETHYL PHTHALATE
Oral Acute 7 mg/kg/day 300 Repro. Final 06/1995 84-66-2
Oral Int. 6 mg/kg/day 300 Hepatic Final 06/1995 84-66-2
 
DIISOPROPYL METHYLPHOSPHONATE (DIMP)
Oral Int. 0.8 mg/kg/day 100 Hemato. Final 08/1998 1445-75-6
Oral Chr. 0.6 mg/kg/day 100 Hemato. Final 08/1998 1445-75-6
 
DIMETHYLARSINIC ACID (DMA)
Oral Chr. 0.02 mg/kg/day 100 Renal Final 08/2007 75-60-5
 
DI-N-BUTYL PHTHALATE
Oral Acute 0.5 mg/kg/day 100 Develop. Final 09/2001 84-74-2
 
DI-N-OCTYL PHTHALATE
Oral Acute 3 mg/kg/day 300 Hepatic Final 09/1997 117-84-0
Oral Int. 0.4 mg/kg/day 100 Hepatic Final 09/1997 117-84-0
 
DISULFOTON
Inh. Acute 0.6 ug/m3 30 Neurol. Final 08/2022 298-04-4
Inh. Int. 0.6 ug/m3 30 Neurol. Final 08/2022 298-04-4
Oral Acute 0.3 ug/kg/day 100 Neurol. Final 08/2022 298-04-4
Oral Int. 0.09 ug/kg/day 100 Neurol., Develop. Final 08/2022 298-04-4
Oral Chr. 0.06 ug/kg/day 1000 Neurol. Final 08/2022 298-04-4
 
ENDOSULFAN
Oral Acute 0.007 mg/kg/day 100 Neurol. Final 08/2015 115-29-7
Oral Int. 0.005 mg/kg/day 100 Immuno. Final 08/2015 115-29-7
Oral Chr. 0.005 mg/kg/day 100 Immuno. Final 08/2015 115-29-7
 
ENDRIN
Oral Acute 0.6 ug/kg/day 100 Neurol. Final 03/2021 72-20-8
Oral Int. 0.6 ug/kg/day 100 Neurol. Final 03/2021 72-20-8
Oral Chr. 0.3 ug/kg/day 100 Neurol.,Hepatic Final 03/2021 72-20-8
 
ETHION
Oral Acute 0.002 mg/kg/day 30 Neurol. Final 09/2000 563-12-2
Oral Int. 0.002 mg/kg/day 30 Neurol. Final 09/2000 563-12-2
Oral Chr. 0.0004 mg/kg/day 150 Neurol. Final 09/2000 563-12-2
 
ETHYLBENZENE
Inh. Acute 5 ppm 30 Neurol. Final 11/2010 100-41-4
Inh. Int. 2 ppm 30 Neurol. Final 11/2010 100-41-4
Inh. Chr. 0.06 ppm 300 Renal Final 11/2010 100-41-4
Oral Int. 0.4 mg/kg/day 30 Hepatic Final 11/2010 100-41-4
 
ETHYLENE GLYCOL
Inh. Acute 2 mg/m3 10 Renal Final 11/2010 107-21-1
Oral Acute 0.8 mg/kg/day 100 Develop. Final 11/2010 107-21-1
Oral Int. 0.8 mg/kg/day 100 Develop. Final 11/2010 107-21-1
 
ETHYLENE OXIDE
Inh. Acute 0.4 ppm 30 Develop. Final 08/2022 75-21-8
Inh. Int. 0.07 ppm 30 Develop. Final 08/2022 75-21-8
 
FLUORANTHENE
Oral Int. 0.4 mg/kg/day 300 Hepatic Final 08/1995 206-44-0
 
FLUORENE
Oral Int. 0.4 mg/kg/day 300 Hepatic Final 08/1995 86-73-7
 
FLUORIDE, SODIUM
Oral Chr. 0.05 mg/kg/day 3 Musculo. Final 09/2003 7681-49-4
 
FLUORINE
Inh. Acute 0.01 ppm 10 Resp. Final 09/2003 7782-41-4
 
FORMALDEHYDE
Inh. Acute 0.04 ppm 9 Resp. Final 07/1999 50-00-0
Inh. Int. 0.03 ppm 30 Resp. Final 07/1999 50-00-0
Inh. Chr. 0.008 ppm 30 Resp. Final 07/1999 50-00-0
Oral Int. 0.3 mg/kg/day 100 Gastro. Final 07/1999 50-00-0
Oral Chr. 0.2 mg/kg/day 100 Gastro. Final 07/1999 50-00-0
 
FUEL OIL NO.2
Inh. Acute 0.02 mg/m3 1000 Neurol. Final 06/1995 68476-30-2
 
GLUTARALDEHYDE
Inh. Acute 0.001 ppm 3 Resp. Final 07/2017 111-30-8
Inh. Int. 0.00003 ppm 3 Resp. Final 07/2017 111-30-8
Oral Chr. 0.1 mg/kg/day 30 Gastro. Final 07/2017 111-30-8
 
GLYPHOSATE TECHNICAL
Oral Acute 1 mg/kg/day 100 Gastro. Final 08/2020 1071-83-6
Oral Int. 1 mg/kg/day 100 Gastro. Final 08/2020 1071-83-6
Oral Chr. 1 mg/kg/day 100 Gastro. Final 08/2020 1071-83-6
 
GUTHION (AZINPHOS-METHYL)
Inh. Acute 0.02 mg/m3 30 Neurol. Final 09/2008 86-50-0
Inh. Int. 0.01 mg/m3 30 Neurol. Final 09/2008 86-50-0
Inh. Chr. 0.01 mg/m3 30 Neurol. Final 09/2008 86-50-0
Oral Acute 0.01 mg/kg/day 100 Neurol. Final 09/2008 86-50-0
Oral Int. 0.003 mg/kg/day 100 Neurol. Final 09/2008 86-50-0
Oral Chr. 0.003 mg/kg/day 100 Neurol. Final 09/2008 86-50-0
 
1,2,3,6,7,8-HEXACHLORODIBENZOFURAN
Oral Int. 5 ng/kg/day 100 Hepatic, Endocrine Final 04/2023 57117-44-9
 
2-HEXANONE
Oral Chr. 0.05 mg/kg/day 3000 Neurol. Final 02/2020 591-78-6
 
HEPTACHLOR
Oral Acute 0.0006 mg/kg/day 3000 Repro. Final 08/2007 76-44-8
Oral Int. 0.0001 mg/kg/day 300 Immuno. Final 08/2007 76-44-8
 
HEXACHLOROBENZENE
Oral Acute 0.008 mg/kg/day 300 Develop. Final 08/2015 118-74-1
Oral Int. 0.0001 mg/kg/day 90 Repro. Final 08/2015 118-74-1
Oral Chr. 0.00007 mg/kg/day 300 Hepatic Final 08/2015 118-74-1
 
HEXACHLOROBUTADIENE
Oral Acute 6 ug/kg/day 1000 Renal Final 03/2021 87-68-3
Oral Int. 2 ug/kg/day 100 Renal Final 03/2021 87-68-3
 
HEXACHLOROCYCLOHEXANE (HCH), ALPHA
Oral Int. 2 ug/kg/day 1000 Hepatic Final 03/2024 319-84-6
Oral Chr. 0.9 ug/kg/day 1000 Hepatic Final 03/2024 319-84-6
 
HEXACHLOROCYCLOHEXANE (HCH), BETA
Oral Acute 0.08 mg/kg/day 100 Neurol. Final 03/2024 319-85-7
Oral Int. 0.6 ug/kg/day 300 Hepatic Final 03/2024 319-85-7
 
HEXACHLOROCYCLOHEXANE (HCH), GAMMA
Oral Acute 3 ug/kg/day 300 Develop. Final 03/2024 58-89-9
Oral Int. 0.8 ng/kg/day 100 Develop. Final 03/2024 58-89-9
 
HEXACHLOROCYCLOPENTADIENE
Inh. Int. 0.01 ppm 30 Resp. Final 07/1999 77-47-4
Inh. Chr. 0.0002 ppm 90 Resp. Final 07/1999 77-47-4
Oral Int. 0.1 mg/kg/day 100 Renal Final 07/1999 77-47-4
 
HEXACHLOROETHANE
Inh. Acute 6 ppm 30 Neurol. Final 09/1997 67-72-1
Inh. Int. 6 ppm 30 Neurol. Final 09/1997 67-72-1
Oral Acute 1 mg/kg/day 100 Hepatic Final 09/1997 67-72-1
Oral Int. 0.01 mg/kg/day 100 Hepatic Final 09/1997 67-72-1
 
HEXAMETHYLENE DIISOCYANATE
Inh. Int. 0.00003 ppm 30 Resp. Final 08/1998 822-06-0
Inh. Chr. 0.00001 ppm 90 Resp. Final 08/1998 822-06-0
 
HEXANE, N-
Inh. Chr. 0.6 ppm 100 Neurol. Final 07/1999 110-54-3
 
HMX (CYCLOTETRAMETHYLENE TETRANITRAMINE)
Oral Acute 0.1 mg/kg/day 1000 Neurol. Final 09/1997 2691-41-0
Oral Int. 0.05 mg/kg/day 1000 Hepatic Final 09/1997 2691-41-0
 
HYDRAZINE
Inh. Int. 0.004 ppm 300 Hepatic Final 09/1997 302-01-2
 
HYDROGEN FLUORIDE
Inh. Acute 0.02 ppm 30 Resp. Final 09/2003 7664-39-3
 
HYDROGEN SULFIDE
Inh. Acute 0.07 ppm 27 Resp. Final 11/2016 7783-06-4
Inh. Int. 0.02 ppm 30 Resp. Final 11/2016 7783-06-4
 
IODIDE
Oral Acute 0.01 mg/kg/day 1 Endocr. Final 04/2004 7553-56-2
Oral Chr. 0.01 mg/kg/day 1 Endocr. Final 04/2004 7553-56-2
 
IONIZING RADIATION, N.O.S.
Rad. Acute 4 mSv 3 Neurol. Final 09/1999 HZ1800-45-T
Rad. Chr. 1 mSv/yr 3 Other Final 09/1999 HZ1800-45-T
 
ISOPHORONE
Oral Int. 3 mg/kg/day 100 Other Final 07/2018 78-59-1
Oral Chr. 0.2 mg/kg/day 1000 Hepatic Final 07/2018 78-59-1
 
JP-4
Inh. Int. 9 mg/m3 300 Hepatic Final 06/1995 50815-00-4
 
JP-5
Inh. Int. 2 mg/m<sup>3</sup> 90 Hepatic Final 03/2017 8008-20-6
 
JP-7
Inh. Chr. 0.3 mg/m3 300 Hepatic Final 06/1995 HZ0600-22-T
 
JP-8
Inh. Int. 3 mg/m<sup>3</sup> 30 Neurol. Final 03/2017 8008-20-6
Oral Acute 3 mg/kg/day 100 Immuno. Final 03/2017 8008-20-6
Oral Int. 0.3 mg/kg/day 1000 Develop. Final 03/2017 8008-20-6
 
KEROSENE
Inh. Int. 0.01 mg/m3 1000 Hepatic Final 06/1995 8008-20-6
 
1-METHYLNAPHTHALENE
Oral Chr. 0.07 mg/kg/day 1000 Resp. Final 08/2005 90-12-0
 
2-METHYLNAPHTHALENE
Oral Chr. 0.04 mg/kg/day 100 Resp. Final 08/2005 91-57-6
 
4,4'-METHYLENEBIS(2-CHLOROANILINE) (MBOCA)
Oral Chr. 0.003 mg/kg/day 3000 Hepatic Final 10/2017 101-14-4
 
4,4'-METHYLENEDIANILINE
Oral Acute 0.2 mg/kg/day 150 Hepatic Final 08/1998 101-77-9
Oral Int. 0.08 mg/kg/day 100 Hepatic Final 08/1998 101-77-9
 
MALATHION
Inh. Acute 0.2 mg/m3 100 Neurol. Final 09/2003 121-75-5
Inh. Int. 0.02 mg/m3 1000 Resp. Final 09/2003 121-75-5
Oral Int. 0.02 mg/kg/day 10 Neurol. Final 09/2003 121-75-5
Oral Chr. 0.02 mg/kg/day 100 Neurol. Final 09/2003 121-75-5
 
MANGANESE, RESPIRABLE
Inh. Chr. 0.3 ug/m3 100 Neurol. Final 09/2012 7439-96-5
 
MERCURY
Inh. Chr. 0.3 ug/m3 10 Neurol. Draft 04/2022 7439-97-6
 
MERCURY, INORGANIC SALTS (MERCURIC CHLORIDE, ETC.)
Oral Acute 2 ug/kg/day 100 Renal Draft 04/2022 7487-94-7
Oral Int. 0.01 ug/kg/day 1000 Renal Draft 04/2022 7487-94-7
 
METHOXYCHLOR
Oral Int. 0.005 mg/kg/day 1000 Repro. Final 09/2002 72-43-5
 
METHYL PARATHION
Oral Int. 0.0007 mg/kg/day 300 Neurol. Final 09/2001 298-00-0
Oral Chr. 0.0003 mg/kg/day 100 Hemato. Final 09/2001 298-00-0
 
METHYL tert-BUTYL ETHER (MTBE)
Inh. Acute 2 ppm 30 Neurol. Final 09/2023 1634-04-4
Inh. Int. 1 ppm 30 Neurol.,Hepatic Final 09/2023 1634-04-4
Inh. Chr. 1 ppm 30 Renal Final 09/2023 1634-04-4
Oral Int. 0.4 mg/kg/day 100 Develop. Final 09/2023 1634-04-4
 
METHYLENE CHLORIDE
Inh. Acute 0.6 ppm 100 Neurol. Final 09/2000 75-09-2
Inh. Int. 0.3 ppm 90 Hepatic Final 09/2000 75-09-2
Inh. Chr. 0.3 ppm 30 Hepatic Final 09/2000 75-09-2
Oral Acute 0.2 mg/kg/day 100 Neurol. Final 09/2000 75-09-2
Oral Chr. 0.06 mg/kg/day 100 Hepatic Final 09/2000 75-09-2
 
METHYLENEDIPHENYL DIISOCYANATE (MDI), POLYMERIC
Inh. Chr. 0.001 mg/m3 30 Resp. Final 06/2018 9016-87-9
 
METHYLMERCURY
Oral Chr. 0.1 ug/kg/day 3 Develop. Draft 04/2022 22967-92-6
 
MIREX
Oral Chr. 0.3 ug/kg/day 300 Hepatic Final 10/2020 2385-85-5
 
MOLYBDENUM
Inh. Chr. 2 ug/m3 30 Resp. Final 05/2020 1313-27-5
Oral Int. 0.06 mg/kg/day 300 Renal Final 05/2020 7439-98-7
 
MONOMETHYLARSONIC ACID (MMA)
Oral Int. 0.1 mg/kg/day 100 Gastro. Final 08/2007 124-58-3
Oral Chr. 0.01 mg/kg/day 100 Renal Final 08/2007 124-58-3
 
NAPHTHALENE
Inh. Chr. 0.0007 ppm 300 Resp. Final 08/2005 91-20-3
Oral Acute 0.6 mg/kg/day 90 Neurol. Final 08/2005 91-20-3
Oral Int. 0.6 mg/kg/day 90 Neurol. Final 08/2005 91-20-3
 
NICKEL
Inh. Int. 0.03 µg/m3 30 Resp. Draft 08/2023 7440-02-0
Inh. Chr. 0.01 µg/m3 30 Resp. Draft 08/2023 7440-02-0
 
NITRATE
Oral Acute 4 mg/kg/day 1 Hemato. Final 07/2017 14797-55-8
Oral Int. 4 mg/kg/day 1 Hemato. Final 07/2017 14797-55-8
Oral Chr. 4 mg/kg/day 1 Hemato. Final 07/2017 14797-55-8
 
NITRITE
Oral Acute 0.1 mg/kg/day 2 Hemato. Final 07/2017 14797-65-0
Oral Int. 0.1 mg/kg/day 2 Hemato. Final 07/2017 14797-65-0
Oral Chr. 0.1 mg/kg/day 2 Hemato. Final 07/2017 14797-65-0
 
NITROBENZENE
Inh. Acute 0.1 ppm 30 Hemato. Final 01/2024 98-95-3
Inh. Int. 3 ppb 300 Hemato. Final 01/2024 98-95-3
Inh. Chr. 0.2 ppb 300 Resp. Final 01/2024 98-95-3
Oral Acute 0.05 mg/kg/day 100 Hemato. Final 01/2024 98-95-3
Oral Int. 0.02 mg/kg/day 100 Hemato. Final 01/2024 98-95-3
 
N-NITROSODIMETHYLAMINE (NDMA)
Oral Acute 0.01 ug/kg/day 100 Hemato. Final 04/2023 62-75-9
 
1,2,3,7,8-PENTACHLORODIBENZOFURAN
Oral Int. 7 ng/kg/day 100 Hepatic Final 04/2023 57117-41-6
 
2,3,4,7,8-PENTACHLORO­DIBENZOFURAN
Oral Acute 0.5 ng/kg/day 1000 Develop. Final 04/2023 57117-31-4
Oral Int. 7 pg/kg/day 100 Endocrine Final 04/2023 57117-31-4
Oral Chr. 4 pg/kg/day 1000 Hepatic, Endocrine Final 04/2023 57117-31-4
 
PARATHION
Inh. Int. 20 ng/m3 100 Neurol. Final 01/2017 56-38-2
Oral Int. 0.009 mg/kg/day 10 Neurol. Final 01/2017 56-38-2
 
PBDE, DECABROMINATED
Oral Acute 0.01 mg/kg/day 100 Develop. Final 03/2017 67774-32-7
Oral Int. 0.0002 mg/kg/day 300 Endocr. Final 03/2017 67774-32-7
 
PENTACHLOROPHENOL
Oral Acute 5 ug/kg/day 1000 Develop. Final 04/2022 87-86-5
Oral Chr. 5 ug/kg/day 300 Hepatic Final 04/2022 87-86-5
 
PERCHLORATES
Oral Chr. 0.0007 mg/kg/day 10 Endocr. Final 09/2008 14797-73-0
 
PERFLUOROHEXANE SULFONIC ACID (PFHxS)
Oral Int. 0.02 ug/kg/day 300 Endocr. Final 03/2020 355-46-4
 
PERFLUORONONANOIC ACID (PFNA)
Oral Int. 3 ng/kg/day 300 Develop. Final 03/2020 375-95-1
 
PERFLUOROOCTANE SULFONIC ACID (PFOS)
Oral Int. 2 ng/kg/day 300 Develop. Final 03/2020 1763-23-1
 
PERFLUOROOCTANOIC ACID (PFOA)
Oral Int. 3 ng/kg/day 300 Develop. Final 03/2020 335-67-1
 
PERMETHRIN
Oral Acute 0.3 mg/kg/day 100 Neurol. Final 09/2003 52645-53-1
Oral Int. 0.2 mg/kg/day 100 Neurol. Final 09/2003 52645-53-1
 
PHENOL
Oral Acute 1 mg/kg/day 100 Body Wt. Final 09/2008 108-95-2
 
PHOSPHORUS, WHITE
Inh. Acute 0.02 mg/m3 30 Resp. Final 09/1997 7723-14-0
Oral Int. 0.0002 mg/kg/day 100 Repro. Final 09/1997 7723-14-0
 
POLYBROMINATED BIPHENYLS (PBBS)
Oral Acute 0.01 mg/kg/day 100 Endocr. Final 09/2004 36355-01-8
 
POLYBROMINATED DIPHENYL ETHERS (PBDES), LOWER BROMINATED
Inh. Int. 0.006 mg/m3 90 Endocr. Final 03/2017 32536-52-0
Oral Acute 0.00006 mg/kg/day 1000 Develop. Final 03/2017 60348-60-9
Oral Int. 0.000003 mg/kg/day 300 Reprod. Final 03/2017 5436-43-1
 
POLYCHLORINATED BIPHENYLS (PCBs) (Aroclor 1254)
Oral Int. 0.03 ug/kg/day 300 Neurol. Final 11/2000 11097-69-1
Oral Chr. 0.02 ug/kg/day 300 Immuno. Final 11/2000 11097-69-1
 
PROPYLENE GLYCOL
Inh. Int. 0.009 ppm 1000 Resp. Final 09/1997 57-55-6
 
PROPYLENE GLYCOL DINITRATE
Inh. Acute 0.003 ppm 10 Neurol. Final 06/1995 6423-43-4
Inh. Int. 0.00004 ppm 1000 Hemato. Final 06/1995 6423-43-4
Inh. Chr. 0.00004 ppm 1000 Hemato. Final 06/1995 6423-43-4
 
RDX (CYCLONITE)
Oral Acute 0.2 mg/kg/day 30 Neurol. Final 01/2012 121-82-4
Oral Int. 0.1 mg/kg/day 30 Neurol. Final 01/2012 121-82-4
Oral Chr. 0.1 mg/kg/day 30 Neurol. Final 01/2012 121-82-4
 
REFRACTORY CERAMIC FIBERS
Inh. Chr. 0.03 fibers/cc 30 Resp. Final 09/2004 HZ0900-26-T
 
S,S,S-TRIBUTYL PHOSPHOROTRITHIOATE (TRIBUFOS)
Inh. Int. 0.04 mg/m3 30 Neurol. Final 03/2020 78-48-8
Oral Int. 0.003 mg/kg/day 100 Neurol. Final 03/2020 78-48-8
Oral Chr. 0.5 ug/kg/day 100 Gastro. Final 03/2020 78-48-8
 
SELENIUM
Oral Chr. 0.005 mg/kg/day 3 Dermal Final 09/2003 7782-49-2
 
STRONTIUM
Oral Int. 2 mg/kg/day 90 Musculo. Final 04/2004 7440-24-6
 
STYRENE
Inh. Acute 5 ppm 10 Neurol. Final 11/2010 100-42-5
Inh. Chr. 0.2 ppm 30 Neurol. Final 11/2010 100-42-5
Oral Acute 0.1 mg/kg/day 1000 Neurol. Final 11/2010 100-42-5
 
SULFUR DIOXIDE
Inh. Acute 0.01 ppm 9 Resp. Final 12/1998 7446-09-5
 
SULFUR MUSTARD
Inh. Acute 0.0007 mg/m3 30 Ocular Final 09/2003 505-60-2
Inh. Int. 0.00002 mg/m3 30 Ocular Final 09/2003 505-60-2
Oral Acute 0.5 µg/kg/day 1000 Develop. Final 09/2003 505-60-2
Oral Int. 0.07 µg/kg/day 300 Gastro. Final 09/2003 505-60-2
 
1,1,1-TRICHLOROETHANE
Inh. Acute 1 ppm 100 Neurol. Final 03/2024 71-55-6
Inh. Int. 0.7 ppm 100 Neurol. Final 03/2024 71-55-6
Oral Int. 2 mg/kg/day 100 Body Wt. Final 03/2024 71-55-6
 
1,1,2,2-TETRACHLOROETHANE
Oral Int. 0.5 mg/kg/day 100 Hepatic Final 09/2008 79-34-5
 
1,1,2-TRICHLOROETHANE
Inh. Acute 0.03 ppm 270 Resp. Final 03/2021 79-00-5
Inh. Int. 2 ppb 30 Resp. Final 03/2021 79-00-5
Oral Acute 0.5 mg/kg/day 100 Hepatic Final 03/2021 79-00-5
Oral Int. 0.04 mg/kg/day 100 Immuno. Final 03/2021 79-00-5
 
1,2,3-TRICHLOROPROPANE
Inh. Acute 1 ppb 30 Resp. Final 08/2021 96-18-4
Oral Int. 0.03 mg/kg/day 100 Hemato. Final 08/2021 96-18-4
Oral Chr. 0.01 mg/kg/day 100 Hepatic Final 08/2021 96-18-4
 
1,2,4 - TRICHLOROBENZENE
Oral Int. 0.1 mg/kg/day 100 Hepatic Final 10/2014 120-82-1
Oral Chr. 0.1 mg/kg/day 100 Hepatic Final 10/2014 120-82-1
 
2,3,4,6-TETRACHLOROPHENOL
Oral Acute 0.08 mg/kg/day 100 Hepatic Final 06/2022 58-90-2
Oral Int. 0.01 mg/kg/day 100 Hepatic Final 06/2022 58-90-2
 
2,3,7,8-TETRACHLORODIBENZO-P-DIOXIN
Oral Acute 0.0002 ug/kg/day 21 Immuno. Final 12/1998 1746-01-6
Oral Int. 0.00002 ug/kg/day 30 Lymphor. Final 12/1998 1746-01-6
Oral Chr. 0.000001 ug/kg/day 90 Develop. Final 12/1998 1746-01-6
 
2,4,5-TRICHLOROPHENOL
Oral Int. 1 mg/kg/day 100 Hepatic,Renal Final 06/2022 95-95-4
 
2,4,6-TRICHLOROPHENOL
Oral Int. 5 ug/kg/day 100 Hepatic Final 06/2022 88-06-2
 
2,4,6-TRINITROTOLUENE
Oral Int. 0.0005 mg/kg/day 1000 Hepatic Final 06/1995 118-96-7
 
TETRACHLOROETHYLENE
Inh. Acute 0.006 ppm 300 Neurol. Final 06/2019 127-18-4
Inh. Int. 0.006 ppm 300 Neurol. Final 06/2019 127-18-4
Inh. Chr. 0.006 ppm 300 Neurol. Final 06/2019 127-18-4
Oral Acute 0.008 mg/kg/day 300 Neurol. Final 06/2019 127-18-4
Oral Int. 0.008 mg/kg/day 300 Neurol. Final 06/2019 127-18-4
Oral Chr. 0.008 mg/kg/day 300 Neurol. Final 06/2019 127-18-4
 
TIN, DIBUTYL-, DICHLORIDE
Oral Int. 0.005 mg/kg/day 1000 Immuno. Final 08/2005 683-18-1
 
TIN, INORGANIC
Oral Int. 0.3 mg/kg/day 100 Hemato. Final 08/2005 7440-31-5
 
TIN, TRIBUTYL-, OXIDE
Oral Int. 0.0003 mg/kg/day 100 Immuno. Final 08/2005 56-35-9
Oral Chr. 0.0003 mg/kg/day 100 Immuno. Final 08/2005 56-36-9
 
TITANIUM TETRACHLORIDE
Inh. Int. 0.01 mg/m3 90 Resp. Final 09/1997 7550-45-0
Inh. Chr. 0.0001 mg/m3 90 Resp. Final 09/1997 7550-45-0
 
TOLUENE
Inh. Acute 2 ppm 9 Neurol. Final 06/2017 108-88-3
Inh. Chr. 1 ppm 10 Neurol. Final 06/2017 108-88-3
Oral Acute 0.8 mg/kg/day 300 Neurol. Final 06/2017 108-88-3
Oral Int. 0.2 mg/kg/day 100 Immuno. Final 06/2017 108-88-3
 
TOLUENE DIISOCYANATE (TDI)
Inh. Acute 0.00001 ppm 100 Resp. Final 06/2018 26471-62-5
Inh. Chr. 0.000003 ppm 100 Resp. Final 06/2020 26471-62-5
 
TOXAPHENE
Oral Acute 0.05 mg/kg/day 100 Neurol. Final 10/2014 8001-35-2
Oral Int. 0.002 mg/kg/day 100 Immuno. Final 10/2014 8001-35-2
 
TRIBUTYL PHOSPHATE (TNBP)
Oral Acute 1.1 mg/kg/day 100 Body Wt. Final 09/2012 126-73-8
Oral Int. 0.08 mg/kg/day 100 Renal Final 09/2012 126-73-8
Oral Chr. 0.08 mg/kg/day 100 Renal Final 09/2012 126-73-8
 
TRICHLOROETHYLENE
Inh. Int. 0.0004 ppm 10 Develop. Final 06/2019 79-01-6
100 Immuno.
Inh. Chr. 0.0004 ppm 10 Develop. Final 06/2019 79-01-6
100 Immuno.
Oral Int. 0.0005 mg/kg/day 10 Develop. Final 06/2019 79-01-6
100 Immuno.
1000 Immuno.
Oral Chr. 0.0005 mg/kg/day 10 Develop. Final 06/2019 79-01-6
100 Immuno.
1000 Immuno.
 
TRICRESYL PHOSPHATE (TCP)
Oral Int. 0.04 mg/kg/day 100 Reprod. Final 09/2012 1330-78-5
Oral Chr. 0.02 mg/kg/day 100 Reprod. Final 09/2012 1330-78-5
 
TRIS(1,3-DICHLORO-2-PROPYL) PHOSPHATE (TDCP)
Oral Int. 0.05 mg/kg/day 100 Renal Final 09/2012 13674-87-8
Oral Chr. 0.02 mg/kg/day 100 Renal Final 09/2012 13674-87-8
 
TRIS(2-BUTOXYETHYL) PHOSPHATE (TBEP)
Oral Acute 4.8 mg/kg/day 100 Body Wt. Final 09/2012 78-51-3
Oral Int. 0.09 mg/kg/day 100 Hepatic Final 09/2012 78-51-3
 
TRIS(2-CHLOROETHYL) PHOSPHATE (TCEP)
Oral Int. 0.6 mg/kg/day 100 Neurol. Final 09/2012 115-96-8
Oral Chr. 0.2 mg/kg/day 100 Renal Final 09/2012 115-96-8
 
URANIUM, INSOLUBLE COMPOUNDS
Inh. Int. 0.002 mg/m3 100 Renal Final 02/2013 7440-61-1
Inh. Chr. 0.0008 mg/m3 1000 Resp. Final 02/2013 7440-61-1
 
URANIUM, SOLUBLE SALTS
Inh. Int. 0.0001 mg/m3 300 Renal Final 02/2013 7440-61-1
Inh. Chr. 0.00004 mg/m3 100 Renal Final 02/2013 7440-61-1
Oral Acute 0.002 mg/kg/day 100 Develop. Final 02/2013 7440-61-1
Oral Int. 0.0002 mg/kg/day 300 Renal Final 02/2013 7440-61-1
 
VANADIUM
Inh. Acute 0.0008 mg/m3 90 Resp. Final 09/2012 7440-62-2
Inh. Chr. 0.0001 mg/m3 30 Resp. Final 09/2012 7440-62-2
Oral Int. 0.01 mg/kg/day 10 Hemato. Final 09/2012 7440-62-2
 
VINYL ACETATE
Inh. Acute 1 ppm 30 Resp. Draft 08/2023 108-05-4
Inh. Int. 0.7 ppm 30 Resp. Draft 08/2023 108-05-4
Inh. Chr. 0.3 ppm 30 Resp. Draft 08/2023 108-05-4
 
VINYL CHLORIDE
Inh. Acute 0.5 ppm 30 Develop. Final 01/2024 75-01-4
Inh. Int. 0.02 ppm 30 Hepatic Final 01/2024 75-01-4
Oral Chr. 3 µg/kg/day 30 Hepatic Final 01/2024 75-01-4
 
XYLENES, MIXED
Inh. Acute 2 ppm 30 Neurol. Final 08/2007 1330-20-7
Inh. Int. 0.6 ppm 90 Neurol. Final 08/2007 1330-20-7
Inh. Chr. 0.05 ppm 300 Neurol. Final 08/2007 1330-20-7
Oral Acute 1 mg/kg/day 100 Neurol. Final 08/2007 1330-20-7
Oral Int. 0.4 mg/kg/day 1000 Neurol. Final 08/2007 1330-20-7
Oral Chr. 0.2 mg/kg/day 1000 Neurol. Final 08/2007 1330-20-7
 
ZINC
Oral Int. 0.3 mg/kg/day 3 Hemato. Final 08/2005 7440-66-6
Oral Chr. 0.3 mg/kg/day 3 Hemato. Final 08/2005 7440-66-6

* Total Factors: Final value of all uncertainty and modifying factors, multiplied together.
Total number of MRLs: 474
168 Inhalation, 302 Oral, and 4 External Radiation MRLs
For Duration, Acute = 1 to 14 days, Intermediate = 15 to 364 days, and Chronic = 1 year or longer.

For general information on ATSDR Minimal Risk Levels, see www.atsdr.cdc.gov/MRLs.
For more information on a specific MRL, please refer to our Toxicological Profiles,
particularly Appendix A of Profiles released after 1995.
The Toxicological Profiles can be found online at www.atsdr.cdc.gov/ToxProfiles.

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Page last reviewed: March 29, 2024
Content source: Agency for Toxic Substances and Disease Registry