This site collects useful links and tools for doing toxicological hazard assessment

Some quick links (for my top 6 tools) are here - Other tools can be found in the menus above

Danish QSAR Database:

An excellent tool for getting an overview of the potential toxicity of organic substances

ECHA R8 guideline - the guideline used to make health-based recommendations for exposure limits by the National Research Centre for the Working Environment in Denmark 

WHO's IARC database

CLP / EU harmonised classifications (Annex VI

The Danish Work Authorities list of occupational exposure limits (Arbejdstilsynets

grænseværdiliste):

Calculation of ppm to mg/m3 in inhalation studies

It is highly useful to be able to do this quickly as most old tox papers give ppm - and usually you want the exposure dose to be in mg/m3

XXX mg/m3 = YYY ppm x Molecular weight / 24.45

Or use the calulator located at:

Review articles where you can find dose descriptors for you risk assessment - here is a link to our papers that are almost like a ready-meal from the supermarket - ready to use!

EFSA default values

You need to use these values when calculating oral doses in mg/kg bw (body weight) from feed or drinking water concentrations  

I hope the site is useful /Niels Hadrup