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:

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

REGULATION (EC) No 1272/2008 OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL

This is is the document explaining the terminology and of CLP harmonised classification - we often use this information in our articles