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Hydrogen sulfide Quickview (CASRN 7783-06-4)

Health assessment information on a chemical substance is included in IRIS only after a comprehensive review of toxicity data by U.S. EPA health scientists from several Program Offices, Regional Offices, and the Office of Research and Development.

Disclaimer: This QuickView represents a snapshot of key information. We suggest that you read the IRIS Summary to put this information into complete context.

For definitions of terms in the IRIS Web site, refer to the IRIS Glossary.

Status of Data for Hydrogen sulfide

File First On-Line: 01/31/1987; Last Significant Revision: 07/28/2003

Category (section)
Status
Last Revised
Oral RfD Assessment Discussion 07/28/2003
Inhalation RfC Assessment On-line 07/28/2003
Carcinogenicity Assessment Discussion 07/28/2003
Synonyms
  • 7783-06-4
  • Dihydrogen monosulfide
  • Dihydrogen sulfide
  • Hydrogen sulfide
  • Hydrogen sulphide
  • Hydrosulfuric acid
  • Sulfureted hydrogen
  • Sulfur hydride
  • Acide sulfhydrique [French]
  • Acide sulphhydrique
  • EINECS 231-977-3
  • more...
Hydrogen sulfide Source Documents
Chronic Health Hazard Assessments for Noncarcinogenic Effects

Reference Dose for Chronic Oral Exposure (RfD)

Information reviewed but value not estimated. See IRIS Summary.

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Reference Concentration for Chronic Inhalation Exposure (RfC)

Critical Effect
Point of Departure*
UF RfC
Nasal lesions of the olfactory mucosa NOAEL (HEC): 0.64 mg/m3 300 2x10-3 mg/m3

* The Point of Departure listed serves as a basis from which the Inhalation RfC was derived. See Discussion of Conversion Factors and Assumptions for more details.

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Carcinogenicity Assessment for Lifetime Exposure
  • Weight-of-Evidence Characterization
    • Data are inadequate for an assessment of human carcinogenic potential
  • Weight-of-Evidence Narrative:
    • Under the Draft Revised Guidelines for Carcinogen Risk Assessment (U.S. EPA, 1999), data are inadequate for an assessment of the carcinogenic potential of hydrogen sulfide.
    • This may be a synopsis of the full weight-of-evidence narrative. See IRIS Summary.

Quantitative Estimate of Carcinogenic Risk from Oral Exposure

  • Not Assessed under the IRIS Program.

Quantitative Estimate of Carcinogenic Risk from Inhalation Exposure

  • Not Assessed under the IRIS Program.

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