Glossary

  • Acute toxicity:

    Harmful effect resulting from a single or short-term exposure to a substance.
  • Auto-ignition temperature:

    The lowest temperature at which a substance will spontaneously combust without an external source of ignition.
  • Biodegradation:

    Decomposition or breakdown of a substance under natural conditions (action of micro-organisms).
  • Bioaccumulation:

    Progressive accumulation in living organisms of a chemical substance present in the environment.
  • Carcinogenicity:

    Substance effects causing cancer.
  • Clastogenicity:

    Substance effect that causes breaks in chromosome.
  • Embryotoxicity:

    Harmful effect on foetus health
  • Genotoxicity:

    Substance effect that causes damage to genes, including mutagenicity and clastogenicity.
  • GHS:

    Global Harmonized System of chemicals classification.
  • Hazard:

    Inherent substance property bearing a threat to health or environment.
  • Mutagenicity:

    Substance effect that cause mutation of genes.
  • Partition coefficient:

    The ratio of the concentrations of a substance in the two phases of a mixture of two immiscible solvents (usually n-octanol and water) at equilibrium.
  • PBT:

    Persistent, Bioaccumulative, Toxic.
  • Persistence:

    Refers to the length of time a compound stays in the environment, once introduced.
  • Reprotoxicity:

    Substance effect on reproduction, including teratogenicity, embryotoxicity and harmful effects on fertility.
  • Repeated dose toxicity

    Harmful effect after repeated short-term or long-term exposure to a substance.
  • Sensitising:

    Allergenic.
  • Sediment:

    Topsoil, sand and minerals washed from the land into water, and forming in the end a layer at the bottom of rivers and sea.
  • Teratogenicity:

    Substance effect on foetal morphology.
  • Vapor pressure:

    A measure of a substance ‘s propensity to evaporate.
  • Volatile:

    Any substance that evaporates readily.
  • vPvB:

    very Persistent, very Bioaccumulative.