Abstract: New .alpha.-phenoxy-alkanols represented by the general formula ##STR1## in which R.sup.1 and R.sub.2, which may be identical or different, represent a hydrogen atom or the CH.sub.3 radical, and their stereoisomers of R,S conformation when they contain at least one asymmetric carbon.

Abstract: Ethephon-based composition for the regulation of plant growth containing in addition to ethephon, at least one product or adjuvant the chemical structure of which contains at least two acid functions selected from carboxylic acid type of formula (--COOH) and phosphonic acid type of formula (--PO.sub.3 H.sub.2), at least one of these acid functions being the (--PO.sub.3 H.sub.2) function.

Abstract: Preparation process for 3,4-disubstituted dinitroanilines of formula ##STR1## in which, R.sub.1 and R.sub.2, which are identical to or different from one another, represent a hydrogen atom, a C.sub.1 to C.sub.6 saturated, linear or branched alkyl radical, a C.sub.2 to C.sub.6 linear or branched alkylene radical, a cyclopropyl radical or a chloroethyl radical,R.sub.3 and R.sub.4, which are identical to or different from one another are chosen from the group containing the chlorine atom, the amino group, the C.sub.1 to C.sub.3 lower alkyl radicals and the trifluoromethyl radical,comprising successively a dinitration stage of a 3,4-disubstituted phenol, an alkylation stage of the dinitrated derivative thus obtained and an amination stage of the 3,4-disubstituted 2,6-dinitro-alkoxybenzene thus obtained.

Abstract: Preparation process for 4-substituted dinitroanilines of formula ##STR1## in which R.sub.1 is chosen from the group containing the tert-butyl, sulphonamido, trifluoromethyl, methyl-sulphonyl and isopropyl radicals,R.sub.2 and R.sub.3, which are identical to or different from one another, represent a hydrogen atom, a linear or branched alkyl, cycloalkyl, haloalkyl or alkenyl radical containing less than 6 carbon atoms, characterized in that that it comprises successively:a dinitration stage of the 4-substituted phenol corresponding to the sought 4-substituted dinitro-aniline, this dinitration stage being carried out in a reaction medium containing a slight excess of nitrating agent, a sufficient quantity of protons and a catalyst chosen from the group containing the soluble salts of the transition metals of columns IV to XII of the Periodic Table, preferably the soluble salts of Fe.sub.III, Fe.sub.II, Zn.sub.II and Cu.sub.

Abstract: The invention relates to a new solid storage and marketing presentation for phytosanitary compositions based on any active substance which is little soluble in water or insoluble in water and solid at ambient temperature; these active substances are especially selected from herbicides presenting the said features; these herbicides comprise bramoxynil, ioxynil and their esters as well as. dinitroanilines, especially butralin, pendimethalin, flumetralin and oryzalin.It is in the form of flakes based on a film-forming material which is water-soluble and brittle after drying, and throughout which are dispersed especially the particles of active material.This solid storage and marketing presentation may be prepared by maly of an installation comprising a rotating drying drum (1) on which a thin layer of a dispersion (D) of particles of active substance in an aqueous solution of a film-forming material which is brittle at the dry state is applied.

Abstract: A phytosanitary composition, characterized in that it contains a combination of an oxynil and at least one substance selected from the group consisting of herbicides, insecticides, fungicides, growth regulators and/or pesticides, this substance which is liquid at ambient temperature being intended to keep the oxynil in the liquid state at the application site, if necessary after it has been brought into the liquid state.