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Uranium, natural (CASRN 7440-61-1)

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0259

Uranium, natural; CASRN 7440-61-1

Human health assessment information on a chemical substance is included in the IRIS database only after a comprehensive review of toxicity data, as outlined in the IRIS assessment development process. Sections I (Health Hazard Assessments for Noncarcinogenic Effects) and II (Carcinogenicity Assessment for Lifetime Exposure) present the conclusions that were reached during the assessment development process. Supporting information and explanations of the methods used to derive the values given in IRIS are provided in the guidance documents located on the IRIS website.

STATUS OF DATA FOR Uranium, natural

File First On-Line 09/30/1987

Category (section)
Status
Last Revised
Oral RfD Assessment (I.A.) no data  
Inhalation RfC Assessment (I.B.) no data  
Carcinogenicity Assessment (II.) withdrawn 07/01/1993

_I.  Chronic Health Hazard Assessments for Noncarcinogenic Effects

_I.A. Reference Dose for Chronic Oral Exposure (RfD)

Substance Name — Uranium, natural
CASRN — 7440-61-1

Not available at this time.

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_I.B. Reference Concentration for Chronic Inhalation Exposure (RfC)

Substance Name — Uranium, natural
CASRN — 7440-61-1

Not available at this time.

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_II.  Carcinogenicity Assessment for Lifetime Exposure

Substance Name — Uranium, natural
CASRN — 7440-61-1

The carcinogen assessment summary for this substance has been withdrawn pending further review by the CRAVE Agency Work Group.

Agency Work Group Review — 12/17/1986, 11/30/1988, 03/01/1989, 08/03/1989, 09/06/1989, 12/02/1992, 02/02/1993, 03/31/1993

EPA Contacts:

Please contact the IRIS Hotline for all questions concerning this assessment or IRIS, in general, at (202)566-1676 (phone), (202)566-1749 (FAX) or hotline.iris@epa.gov (internet address).

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_III.  [reserved]
_IV.  [reserved]
_V.  [reserved]


_VI.  Bibliography

Substance Name — Uranium, natural
CASRN — 7440-61-1

Not available at this time.

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_VII.  Revision History

Substance Name — Uranium, natural
CASRN — 7440-61-1

Date
Section
Description
03/01/1988 II.A.2. Text clarified
03/01/1988 II.B.4. Confidence statement revised
06/30/1988 II.D.3. Contacts changed
01/01/1989 II. Withdrawn pending further review
01/01/1992 IV. Regulatory Action section on-line
01/01/1993 II. Work group review date added
03/01/1993 II. Work group review date added
05/01/1993 II. Work group review date added
07/01/1993 II. EPA contact changed
08/01/1995 II. EPA's RfD/RfC and CRAVE workgroups were discontinued in May, 1995. Chemical substance reviews that were not completed by September 1995 were taken out of IRIS review. The IRIS Pilot Program replaced the workgroup functions beginning in September, 1995.
04/01/1997 III., IV., V. Drinking Water Health Advisories, EPA Regulatory Actions, and Supplementary Data were removed from IRIS on or before April 1997. IRIS users were directed to the appropriate EPA Program Offices for this information.
12/10/1998 I., II. This chemical is being reassessed under the IRIS Program.

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_VIII.  Synonyms

Substance Name — Uranium, natural
CASRN — 7440-61-1
Last Revised — 09/30/1987

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