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Delaware Risk Assessment Calculator (DERAC)

Do you have a previously saved file?
(dated 2024-06-13 or newer)
File Number:
Do you want to use the same chemicals and chemical info type?

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*Indoor worker includes industrial tap water

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Select Chemicals Data Source




Select RfD/RfC Type:



*Chronic selection will retrieve Chronic-only RfDs/RfCs; Subchronic selection will first retrieve subchronic values where possible and then use chronic values.

Select Chemicals of interest

Complete List


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Display Risk/HI Output in Percentage


(Results are in seperate table. See User's Guide.)