IRIS

Arsenic, Inorganic

CASRN 7440-38-2 | DTXSID4023886

Updated Problem Formulation and Systematic Review Protocol for the Inorganic Arsenic IRIS Assessment

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Overview

In May 2019, EPA released the Updated Problem Formulation and Systematic Review Protocol for the Inorganic Arsenic IRIS Assessment for a 30-day public comment period. The IRIS Program is updating its 1988 Toxicological Review of Inorganic Arsenic. Given the size and complexity of the evidence base for this chemical, input on the scope of this assessment has been sought from the National Academy of Sciences, Engineering, and Medicine (NAS), EPA Program and Regional Offices, other federal agencies, and public stakeholders to help focus the objectives of the assessment and ensure it is transparently conducted. On July 16, 2019, an NAS ad hoc committee will evaluate the revised scope of the assessment and determine whether the proposed methods are appropriate to synthesize the scientific evidence and develop conclusions.

Citation

U.S. EPA. Updated Problem Formulation and Systematic Review Protocol for the Inorganic Arsenic IRIS Assessment. U.S. Environmental Protection Agency, Washington, DC, EPA/635/R-19/049, 2019.

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Background

Inorganic arsenic is used for hardening copper and lead alloys. It also is used in glass manufacturing as a decolorizing and refining agent, as a component of electrical devices, in the semiconductor industry, and as a catalyst in the production of ethylene oxide. Arsenic compounds are used as a mordant in the textile industry, for preserving hides, as medicinals, pesticides, pigments, and wood preservatives.

Arsenic is also found naturally in the environment and is typically present in soil and water at detectable levels. Sources of human exposure to inorganic arsenic include drinking water, diet, air, and soils (which can contain naturally occurring arsenic or contamination from anthropogenic sources). This IRIS health assessment addresses cancer and non-cancer human health effects that may result from chronic exposure to this chemical.

History/Chronology


Status

The IRIS Program will use the updated problem formulation and methods for conducting the systematic review and dose-response as described in the protocol to develop the draft assessment.

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Download(s)

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