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The information provided, must describe the physical and chemical properties of active substances and together with relevant information, must serve to characterize them. In particular, the information provided must permit:
physical, chemical, and technical hazards associated with active substances, to be identified,
classification of active substance as to harzard,
appropriate restrictions and conditions to be associated with inclusions in Annex I to be selected, and
appropriate risk and safety phrases to be specified.
The information and data referred to are required for all active substances, except where otherwise specified.
The information provided, taken together with that provided for relevant preparations, must permit the physical, chemical hazards associated with preparations, to be identified, permit preparations to be classified, and permit establishment that preparations can be used without unnecessary difficulty, and be such that exposure of man, animals, and the environment is minimized, taking account of manner of use.
The extent to wich active substances of which inclusion in Annex I is sought, comply with relevant FAO specifications, must be stated. Divergences from FAO specifications must be described in detail, and justified.
In certain specified instances, tests must be conducted using purified active substance of stated specification. In such cases the principles of the method(s) of purification must be reported. The purity of such test material, which must be as high as can be achieved using the best available technology, must be reported. A reasoned justification must be provided in cases where the degree of purity achieved is less than 980 g/kg.
Such justification must demonstrate that all technically feasible and reasonable possibilities for the production of the pure active substance have been exhausted.
In the case of active substances which are liquids or solids, the relative density of the purified active substance must be determined and reported according to EEC method A 3.
The wavelengths at which UV/visible molecular extinction occurs are to be determined and reported and must include where appropriate a wavelength at the highest absorption value above 290 nm.
In the case of active substances which are resolved optical isomers their optical purity must be measured and reported.
The water solubility of purified active substances under atmospheric pressure must be determined and reported according to EEC method A 6. These water solubility determinations must be made in the neutral range (i.e. in distilled water in equilibrium with atmospheric carbon dioxide). Where the active substance is capable of forming ions, determinations must also be made in the acidic range (pH 4 to 6) and in the alkaline range (pH 8 to 10), and be reported. Where the stability of the active substance in aqueous media is such that water solubility cannot be determined, a justification based on test data must be provided.
The solubility of the active substances as manufactured in the following organic solvents at 15 to 25 o C must be determined and reported if less than 250 g/kg; the temperature applied must be specified:
Aliphatic hydrocarbon: preferably n-heptane,
Aromatic hydrocarbon: preferably xylene,
Halogenated hydrocarbon: preferably 1,2-dichlorethane,
Alcohol: preferably methanol or isopropyl alcohol,
Ketone: preferably acetone,
Ester: preferably ethyl acetate.
If for a particular active substance, one or more of these solvents is unsuitable (e.g. reacts with test material), alternative solvents can be used instead. In such cases, choices made must be justified in terms of their structure and polarity.
The n-octanol/water partition coefficient of purified active substance must be determined and reported according to EEC method A 8. The effect of pH (4 to 10) must be investigated when the substance is acidic or basic as defined by its pKa value (< 12 for acids, > 2 for bases).
If degradation is observed at 50 o C, degradation rate at another temperature must be determined, and an Arrhenius plot must be constructed to permit an estimate to be made of hydrolysis at 20 o C. The identity of hydrolysis products formed and the rate constantly observed, must be reported. The estimated DT 50 value must also be reported.
The method is described in the FAO Revised Guidelines on Environmental Criteria for the Registration of Pesticides.
An estimation of the photochemical oxidative degradation (indirect hototransformation) of the active substance, must be submitted.
The flash point of active substances as manufactured with a melting point below 40 o C, must be determined and reported according to EEC method A 9; only closed cup methods should be used.
The explosive properties of active substances as manufactured, must be determined and reported according to EEC method A 14 where necessary.
The surface tension has to be determined and reported according to EEC method A 5.
The oxidizing properties of active substances as manufactured, must be determined and reported according to EEC method A 17, except where examination of its sturctural formula, establishes beyond reasonable doubt that the active substance is incapable of reacting exothermically with a combustible material. In such cases, it is sufficient to provide that information as justification for not determining the oxidizing properties of the substance.]
Textual Amendments
Substance within the meaning of the definition of Article 2, point 3.