# Commission Regulation (EU) No 283/2013 of 1 March 2013 setting out the data requirements for active substances, in accordance with Regulation (EC) No 1107/2009 of the European Parliament and of the Council concerning the placing of plant protection products on the market (Text with EEA relevance), Division 2.2: Vapour pressure, volatility

Extent: E+W+S+N.I.

The vapour pressure of purified active substance at 20 °C or 25 °C shall be reported. Where vapour pressure is less than 10–5 Pa at 20 °C the vapour pressure at 20 °C or 25 °C shall be estimated by a vapour pressure curve with measurements at higher temperatures.
In the case of active substances which are solids or liquids, volatility (Henry’s law constant) of purified active substance shall be determined or calculated from its water solubility and vapour pressure and be reported (in Pa × m3 × mol–1).

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Source: https://www.legislation.gov.uk/eur/2013/283/annex/section/2/division/2.2 (the official version)
Page: https://openlegislation.uk/eu-regulation-2013-283/annex/section-2/division-2.2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.