Abstract: The present invention relates to a composition of at least one sulfonic acid in combination with an effective amount of at least one nitrosyl compound, acting as inhibitor of corrosion of metals by said at least one sulfonic acid.

Abstract: The present invention relates to the use of a formulation which is liquid at ambient temperature comprising at least one terpene derivative for the fixing and the release of hydrogen in at least one hydrogenation/dehydrogenation cycle of said formulation. The invention also relates to the use of said formulation for the transportation and the handling of hydrogen resulting from the steam cracking of petroleum products, of inevitable hydrogen resulting from chemical reactions, such as the electrolysis of salt, or of hydrogen resulting from the electrolysis of water.

Abstract: The present invention concerns a process for purifying an aromatic liquid compound, said process comprising at least a step in which said aromatic liquid compound is contacted with a zeolitic adsorbent material. The present invention also concerns the use of a zeolitic adsorbent material for purifying an aromatic liquid compound.

Abstract: The present invention relates to a process for producing hydrogen from a liquid capable of being used in at least one hydrogenation/dehydrogenation cycle, said process comprising at least one step wherein said liquid is brought into contact with a filtering agent. The invention also relates to the use of a filtering agent for the purification of a liquid capable of being used in at least one hydrogenation/dehydrogenation cycle, in a hydrogen production process.

Abstract: The present invention concerns a process for producing hydrogen by partial dehydrogenation of an organic liquid, said process comprising a step of supplying at least one organic liquid having a Degree of Hydrogenation DHplus, a step of partially dehydrogenating said liquid, a step of recovering firstly gaseous hydrogen and secondly said organic liquid having a Degree of Hydrogenation DHminus, and wherein the ratio DHplus/DHminus is between 1 and 25, endpoints excluded. The invention likewise concerns a hydrogenation/dehydrogenation cycle comprising at least the process of the invention for producing hydrogen by partial dehydrogenation of an organic liquid and at least one hydrogenation reaction of said organic liquid.

Abstract: The present invention relates to the use of a, preferably single-phase, heat transfer composition, comprising at least one aromatic synthetic dielectric fluid chosen from alkylbenzenes, alkyldiphenylethanes, alkylnaphthalenes, methylpolyarylmethanes, and mixtures thereof, for regulating the temperature of a battery. The present invention also relates to a battery comprising such a heat transfer composition.

Abstract: The present invention relates to the use, for the retrofilling of a transformer, of at least one dielectric fluid of general formula (1): (A?X)n?B??(1) in which A and B, which are identical or different, represent, independently of each other, an optionally substituted aromatic ring, X represents a spacer group and n represents 0, 1, 2 or 3. The invention also relates to a transformer containing at least one dielectric fluid of general formula (1) and an amount of PCBs of less than 20%.

Abstract: The invention relates to a composition comprising: at least one alkane-sulphonic acid R—SO3H wherein R represents a saturated, linear or branched, hydrocarbon chain comprising from 1 to 4 carbon atoms, which can or cannot be substituted by at least one halogen atom; sulphuric acid; and optionally at least one solvent; of which the proportions are defined in the description. The invention also relates to the use of the composition as a fatty acid esterification catalyst.

Abstract: The present invention relates to the use, for increasing the power of a transformer, of at least one dielectric fluid of general formula (1): (A-X)n-B??(1) in which A and B, which are identical or different, represent, independently of each other, an optionally substituted aromatic ring, X represents a spacer group and n represents 0, 1, 2 or 3. The invention also relates to a transformer containing at least one dielectric fluid of general formula (1).

Abstract: The subject of the present invention is a process for producing a sulfonic acid which is sparingly corrosive, or even non-corrosive, with respect to stainless steels, said process comprising at least the steps of adding at least one nitrite to a sulfonic acid, curing, with stirring, with sparging of the mixture and recovering the low-corrosion sulfonic acid obtained. The invention also relates to the low-corrosion sulfonic acid obtained according to the process of the invention, and also to the use thereof as low-corrosion sulfonic acid.

Abstract: The invention relates to a low-odor thioglycolic acid composition comprising a linear or cyclic organic acid comprising from 1 to 3 carboxylic acid functions and a saturated or unsaturated, linear or branched or cyclic hydrocarbon chain containing from 1 to 10 carbon atoms; and also to the process for preparing the composition and to its uses.

Abstract: The subject of the present invention is a weakly corrosive and weakly coloured sulfonic acid, with an APHA colour index of less than 20, comprising chlorides and nitrites in a chloride/sulfonic acid molar ratio of between 1 ppm and 200 ppm, and a nitrite/sulfonic acid molar ratio of between 200 ppm and 6000 ppm, limits inclusive.

Abstract: The present invention relates to the acidic cleaning in the beer industry, and more particularly an improved process for acidic cleaning of the various elements and vessels that are used in the preparation of beer and other and other related fermented beverages, said cleaning being carried out by using a formulation comprising at least one alkane sulphonic acid.

Abstract: The use of a mixture as dielectric fluid comprising a composition A comprising dibenzyltoluene and benzyltoluene for improving the service life of a transformer is described, in addition to a mixture comprising said composition A with at least one ester and optionally at least one additive, and a transformer comprising said composition A or a mixture comprising said composition A with at least one ester and optionally at least one additive.

Abstract: The subject of the present invention is a process for producing a sulfonic acid which is sparingly corrosive, or even non-corrosive, with respect to stainless steels, said process comprising at least the steps of adding at least one nitrite to a sulfonic acid, curing, with stirring, with sparging of the mixture and recovering the low-corrosion sulfonic acid obtained. The invention also relates to the low-corrosion sulfonic acid obtained according to the process of the invention, and also to the use thereof as low-corrosion sulfonic acid.

Abstract: The invention relates to a composition comprising: at least one alkane-sulphonic acid R—SO3H wherein R represents a saturated, linear or branched, hydrocarbon chain comprising from 1 to 4 carbon atoms, which can or cannot be substituted by at least one halogen atom, at least one aryl-sulphonic acid; and optionally at least one solvent, of which the proportions are as defined in the description. The invention also relates to the use of composition in a fatty acid esterification method.

Abstract: The present invention relates to a composition of at least one sulfonic acid in combination with an effective amount of at least one nitrosyl compound, acting as inhibitor of corrosion of metals by said at least one sulfonic acid.

Abstract: The subject of the present invention is a weakly corrosive and weakly coloured sulfonic acid, with an APHA colour index of less than 20, comprising chlorides and nitrites in a chloride/sulfonic acid molar ratio of between 1 ppm and 200 ppm, and a nitrite/sulfonic acid molar ratio of between 200 ppm and 6000 ppm, limits inclusive.

Abstract: Provided is a process for preparing polythiols by preparing a sulfhydration reaction medium, simultaneously carrying out radical sulfhydration reaction of at least one polyene and acid-catalyzed sulfhydration reaction of the polyene and recovering a mixture including at least two polythiols. Also provided is a mixture of polythiols obtained from the process described herein.

Abstract: The invention relates to a composition comprising; at least one alkane-sulphonic acid R—SO3H wherein R represents a saturated, linear or branched, hydrocarbon chain comprising from 1 to 4 carbon atoms, which can or cannot be substituted by at least one halogen atom; sulphuric acid; and optionally at least one solvent; of which the proportions are defined in the description. The invention also relates to the use of the composition as a fatty acid esterification catalyst.