RAIS Users,

The following changes were made to the Risk Assessment Information System
http://risk.lsd.ornl.gov/rap_hp.shtml) in May 2001:

Water Solubility (S) was added to the chemical-specific parameters search
feature.

Addresses and phone numbers were updated on the contacts pages.

For 47 chemicals, the inhalation slope factor was changed from a HEAST
value to a conversion from the IRIS unit risk value, which is more current.
 A footnote was also added to indicate this conversion.  This change
occurred for the following chemicals: Acrylamide; Acrylonitrile; Aldrin;
Aramite; Azobenzene; Benzene; Beryllium; Bis(2-chloroethyl)ether;
Bis(chloromethyl)ether; Bromoform; Butadiene, 1,3-; Carbon Tetrachloride;
Chlordane; Chloroform; Chromium VI (chromic acid mists and particulates);
Coke Oven Emissions; DDT; Dibromoethane, 1,2-; Dichloroethylene, 1,1-;
Dichloropropene, 1,3-; Dieldrin; Diphenylhydrazine, 1,2-; Epichlorohydrin;
Formaldehyde; Heptachlor; Heptachlor Epoxide; Hexachlorobenzene;
Hexachlorobutadiene; Hexachlorocyclohexane, Alpha-; Hexachlorocyclohexane,
Beta-; Hexachlorocyclohexane, Technical; Hexachloroethane; Hydrazine;
Hydrazine Sulfate; Nickel Refinery Dust; Nickel Subsulfide;
Nitrosodiethylamine, N-; Nitrosodimethylamine, N-; Nitroso-di-N-butylamine,
N-; Nitrosopyrrolidine, N-; Propylene Oxide; Tetrachloroethane, 1,1,2,2-;
Toxaphene; Trichloroethane, 1,1,2; Trichlorophenol, 2,4,6; and Vinyl
Chloride.
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Debra Thomas
University of Tennessee
1060 Commerce Park Drive
MS 6480 
Oak Ridge, TN 37838
(865) 482-2657
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