The Risk Assessment Information System

Basic information for the chemical is shown in the first section.

Toxicity information (Oral RfDs, Inhalation RfCs, and Cancer Toxicity Values) is displayed in tables from IRIS, PPRTV, ATSDR, CALEPA, and HEAST.

Click any blue toxicity value to see metadata associated with it.

The chronic and subchronic values used in default PRG equations are highlighted.

Metadata is not available for CALEPA values.

The last section contains an extensive list of parameters for the chemical, followed by tables of parameters from PhysProp, EPI, SSL, CRC, PERRY, LANGE, and YAWS.

The highlighted value(s) in each table are used in default PRG calculations.

Values from other sources are displayed below the output tables.

See the PRG User's Guide (sections 2.3 and 2.4) for toxicity and chemical-specific parameter hierarchies.

The Risk Assessment Information System

Chemical Data Profiles

1. Select Chemical

2. Chemical Profile

3. Chemical Metadata

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