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Submarine exposure guidance levels for selected hydrofluorocarbons : HFC-236fa, HFC-23, and HFC-404a / Subcommittee on Exposure Guidance Levels for Selected Hydrofluorocarbons, Committee on Toxicology, Board on Environmental Studies and Toxicology, Commission on Life Sciences, National Research Council.

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Format:
Book
Contributor:
National Research Council (U.S.). Subcommittee on Exposure Guidance Levels for Selected Hydrofluorocarbons.
Series:
Compass series (Washington, D.C.)
Compass series
Language:
English
Subjects (All):
Fluorohydrocarbons--Toxicology.
Fluorohydrocarbons.
Fluorohydrocarbons--Threshold limit values.
Medicine, Naval.
Submarines (Ships).
Threshold limit values (Industrial toxicology).
Physical Description:
1 online resource (98 p.)
Edition:
1st ed.
Place of Publication:
Washington, D.C. : National Academy Press, 2000.
Language Note:
English
Summary:
As part of the effort to phase out the use of stratospheric ozone-depleting substances, such as chlorofluorocarbons (CFCs), the U.S. Navy is considering hydrofluorocarbons (HFCs) as replacements for the CFC refrigerants used aboard its submarines. Before using the HFCs, the Navy plans to set emergency exposure guidance levels (EEGLs) and continuous exposure guidance levels (CEGLs) to protect submariners from health effects that could occur as a result of accidental releases or slow leaks. In this report, the Subcommittee on Exposure Guidance Levels for Selected Hydrofluorocarbons of the National Research Council's (NRC 's) Committee on Toxicology independently reviews the scientific validity of the Navy's proposed 1-hr and 24-hr EEGLs and 90-day CEGLs for two of the candidate refrigerants-HFC-236fa and HFC-404a. In addition, the subcommittee reviews the the EEGLs and CEGL for HFC-23, one of the combustion products of HFC-236fa. This NRC report is intended to aid the Navy in using HFCs safely.
Contents:
SUBMARINE EXPOSURE GUIDANCE LEVELS FOR SELECTED HYDROFLUOROCARBONS
Copyright
Contents
Summary
STATEMENT OF TASK
APPROACH TO THE STUDY
CONCLUSIONS AND RECOMMENDATIONS
HFC-236FA
HFC-23
HFC-404A
Exposure Guidance Levels for Components of HFC-404a
Exposure Guidance Levels for HFC-404a
1 Introduction
EXPOSURE GUIDANCE LEVELS
Emergency Exposure Guidance Levels
Continuous Exposure Guidance Levels
Special Considerations
STRUCTURE OF THE REPORT
REFERENCES
2 Hydrofluorocarbon-236fa
CHEMICAL AND PHYSICAL PROPERTIES
TOXICOKINETICS
TOXICITY INFORMATION
Acute Toxicity
Cardiac Sensitization
Subchronic Toxicity
Reproductive Toxicity
Developmental Toxicity
Genotoxicity
Carcinogenicity
SUMMARY
RECOMMENDATIONS
3 Hydrofluorocarbon-23
Human Studies
4 Hydrofluorocarbon-404a
HFC-143A
Chemical and Physical Properties
Toxicokinetics
Toxicity Information
Exposure Guidance Levels for HFC-143a
HFC-125
Exposure Guidance Levels for HFC-125
HFC-134A
Toxicity Information.
Human Studies
Acute Toxicity and Irritation
Reproductive and Developmental Toxicity
Exposure Guidance Levels for HFC-134a
EXPOSURE GUIDANCE LEVELS FOR HFC-404A
CALCULATIONS
Calculations Used to Determine EEGLs and CEGL for HFC-404a
REFERENCES.
Notes:
"This project was supported by Contract Nos. DAMB 17-89-C-9086 and DAMD 17-99-C-9049 between the National Academy of Sciences and the U.S. Department of Defense"--T.p. verso.
Includes bibliographical references.
ISBN:
9786610246533
9780309183864
0309183863
9781280246531
1280246537
9780309563277
0309563275
OCLC:
70773577

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