Comparison Results | RestoredCDC.org

Comparison timestamp: 2025-05-12 00:51:22 UTC
RestoredCDC URL: http://restoredcdc.org/www.cdc.gov/niosh/idlh/7803512.html
Live cdc.gov URL ↗: https://www.cdc.gov/niosh/idlh/7803512.html
Removed: Line removed from cdc.gov. Specific word removals are highlighted.
Added: Line added to cdc.gov. Specific word additions are highlighted.
Injected: Line or disclaimer added by RestoredCDC.org.
Unchanged: Line unchanged.
Enable word-level highlighting (experimental)? High contrast mode
    Original site: www.cdc.gov/niosh/idlh/7803512.html | RestoredCDC.org is an independent project, not affiliated with CDC or any federal entity. Visit CDC.gov for free official information. Due to archival on January 6, 2025, recent outbreak data is unavailable. Videos are not restored. Access data.restoredcdc.org for restored data. Use of this site implies acceptance of this disclaimer.
    [More]
    About Us Report Bug Compare Content
  Skip directly to site content Skip directly to search
  Español | Other Languages
    Here's how you know
    An official website of the United States government Here's how you know
        The National Institute for Occupational Safety and Health (NIOSH)
        The National Institute for Occupational Safety and Health (NIOSH)
        Centers for Disease Control and Prevention. CDC twenty four seven. Saving Lives, Protecting People The National Institute for Occupational Safety and Health (NIOSH)
          Search
            Search Menu Navigation Menu
                × NIOSH
                  NIOSH All CDC
                Submit
    The National Institute for Occupational Safety and Health (NIOSH)
      * Immediately Dangerous To Life or Health (IDLH) Values
              + BACK
                Immediately Dangerous To Life or Health (IDLH) Values
          + Table of IDLH Values
                  o BACK
                    Table of IDLH Values
                  o BACK
                    Immediately Dangerous To Life or Health (IDLH) Values Table of IDLH Values
              o Phosphine
              o The National Institute for Occupational Safety and Health (NIOSH) Home
          + Criteria for Determining IDLH Values
          + Historical Documentation
                  o BACK
                    Historical Documentation
                  o BACK
                    Immediately Dangerous To Life or Health (IDLH) Values Historical Documentation
              o Original (SCP) Values
              o Abbreviations for IDLH Documentation
              o Abbreviations for Journal Titles
              o The National Institute for Occupational Safety and Health (NIOSH) Home
          + The National Institute for Occupational Safety and Health (NIOSH) Home
      * The National Institute for Occupational Safety and Health (NIOSH) Home
          The National Institute for Occupational Safety and Health (NIOSH)
    The National Institute for Occupational Safety and Health (NIOSH) Home
        Phosphine
          Phosphine
        Print
          May 1994
          Immediately Dangerous to Life or Health Concentrations (IDLH)
        CAS number: 7803–51–2
        NIOSH REL: 0.3 ppm (0.4 mg/m3) TWA, 1 ppm (1 mg/m3) STEL
        Current OSHA PEL: 0.3 ppm (0.4 mg/m3) TWA
        1989 OSHA PEL: 0.3 ppm (0.4 mg/m3) TWA, 1 ppm (1 mg/m3) STEL
        1993-1994 ACGIH TLV: 0.3 ppm (0.42 mg/m3) TWA, 1 ppm (1.4 mg/m3) STEL
        Description of substance: Colorless gas with a fish- or garlic-like odor.
        LEL: . . 1.79% (10% LEL, 1,790 ppm)
        Original (SCP) IDLH: 200 ppm
        Basis for original (SCP) IDLH: The chosen IDLH is based on the statement by Patty [1963] that 290 to 430 ppm is dangerous to life after 1 hour, and 100 to 200 ppm is the maximum amount for 0.5 to 1 hour [Henderson and Haggard 1943].
        Short-term exposure guidelines: None developed
        ACUTE TOXICITY DATA:
        Lethal concentration data:
            Species  Reference            LC50 (ppm)  LCLo (ppm)  Time    Adjusted 0.5-hr LC (CF)  Derived value
            Mammal   Flury 1928           —–          1,000       5 min   550 ppm (0.55)           55 ppm       
            Mouse    Izmerov et al. 1982  —–          270         2 hr    431 ppm (1.6)            43 ppm       
            G. pig   Izmerov et al. 1982  —–          100         4 hr    200 ppm (2.0)            20 ppm       
            Cat      Izmerov et al. 1982  —–          50          2 hr    80 ppm (1.6)             8.0 ppm      
            Rabbit   Schulz 1890          —–          2,500       20 min  2,400 ppm (0.96)         240 ppm      
            Human    Tab Biol Per 1933    —–          1,000       5 min   550 ppm (0.55)           55 ppm       
            Rat      Waritz & Brown 1975  11          —–          4 hr    22 ppm (2.0)             2.2 ppm      
          Other human data: Symptoms such as diarrhea, nausea and vomiting, tightness of the chest, cough, headache, and dizziness have been reported in workers exposed intermittently to concentrations up to 35 ppm [Jones et al. 1964]. It has been stated that 290 to 430 ppm is dangerous to life after 1 hour, and 100 to 200 ppm is the maximum amount for 0.5 to 1 hour [Henderson and Haggard 1943].
            Revised IDLH: 50 ppmBasis for revised IDLH: The revised IDLH for phosphine is 50 ppm based on acute inhalation toxicity data in humans [Jones et al. 1964; Tab Biol Per 1933]. This may be a conservative value due to the lack of relevant acute toxicity data for workers exposed to concentrations above 35 ppm.
            REFERENCES:
            1. Flury F [1928]. Moderne gewerbliche vergiftungen in pharmakologisch-toxikologischer hinsicht (Pharmacological-toxicological aspects of intoxicants in modern industry). Arch Exp Pathol Pharmakol 138:65-82 (translated).
            2. Henderson Y, Haggard HW [1943]. Noxious gases. 2nd ed. New York, NY: Reinhold Publishing Corporation, p. 243.
            3. Izmerov NF, Sanotsky IV, Sidorov KK [1982]. Toxicometric parameters of industrial toxic chemicals under single exposure. Moscow, Russia: Centre of International Projects, GKNT, p. 75.
            4. Jones AT, Jones RC, Longley EO [1964]. Environmental and clinical aspects of bulk wheat fumigation with aluminum phosphide. Am Ind Hyg Assoc J 23:375-379.
            5. Patty FA, ed. [1963]. Industrial hygiene and toxicology. 2nd rev. ed. Vol. II. Toxicology. New York, NY: Interscience Publishers, Inc., p. 884.
            6. Schulz H [1890]. Uber phosphorwasserstoff. Arch Exp Pathol Pharmakol 27:314-335 (in German).
            7. Tab Biol Per [1933]; 3:231 (in German).
            8. Waritz RS, Brown RM [1975]. Acute and subacute inhalation toxicities of phosphine, phenylphosphine, and triphenylphosphine. Am Ind Hyg Assoc J 36:452-458.
          Last Reviewed: December 4, 2014
            Source: National Institute for Occupational Safety and Health
            * Facebook
            * Twitter
            * LinkedIn
            * Syndicate
        home NIOSH Publications & Products
        * Immediately Dangerous To Life or Health (IDLH) Values plus icon
            + Table of IDLH Values
                o Phosphine
            + Criteria for Determining IDLH Values
            + Historical Documentation plus icon
                o Original (SCP) Values
                o Abbreviations for IDLH Documentation
                o Abbreviations for Journal Titles
              Follow NIOSH
                * Facebook
                * Pinterest
                * Twitter
                * YouTube
            NIOSH Homepage
              * Workplace Safety & Health Topics
              * Publications and Products
              * Programs
              * Contact NIOSH
                * About CDC
                * Contact Us
                * 800-232-4636
                Facebook Twitter Instagram LinkedIn Youtube Pinterest Snapchat
                Facebook Twitter Instagram LinkedIn Youtube Pinterest Snapchat RSS
            * CONTACT CDC
                      Contact Us
                      Call 800-232-4636
                      Email Us
            * ABOUT CDC
                    + About CDC
                    + Jobs
                    + Funding
            * POLICIES
                    + Accessibility
                    + External Links
                    + Privacy
                    + Policies
                    + Web Policies
                    + No Fear Act
                    + FOIA
                    + OIG
                    + No Fear Act
                    + Nondiscrimination
                    + Vulnerability Disclosure Policy
                    + CDC Archive
                    + Public Health Publications
                    + HHS.gov
                    + USA.gov
            * CONNECT WITH US
                      + Facebook
                      + Twitter
                      + Instagram
                      + LinkedIn
                      + Youtube
                      + Pinterest
                      + Snapchat
                      + Email
            * LANGUAGES
                    + Español
                    + 繁體中文
                    + Tiếng Việt
                    + 한국어
                    + Tagalog
                    + Русский
                    + العربية
                    + Kreyòl Ayisyen
                    + Français
                    + Polski
                    + Português
                    + Italiano
                    + Deutsch
                    + 日本語
                    + فارسی
                    + English
            * U.S. Department of Health & Human Services
            * Accessibility
            * External Links
            * Privacy
            * Policies
            * Web Policies
            * FOIA
            * OIG
            * No Fear Act
            * FOIA
            * Nondiscrimination
            * OIG
            * Vulnerability Disclosure Policy
            * CDC Archive
            * Public Health Publications
            * HHS.gov
            * USA.gov
          Content Credential
          ×
          This image was edited or created using GenAI (generative artificial intelligence).
          Our experts review all images in an effort to ensure accuracy and quality before use.
          Learn more about CDC's usage of GenAI.
Note: Comparison ignores leading/trailing whitespace and certain script/tracking codes. Word-level highlighting (optional above) only applies to changed lines.