Adipic acid crystals for storage with a minimal coagulating effect, are characterized by a specific exchangeable concentration of water

Adipic acid crystals characterized in that the concentration of exchangeable water is less than 100 ppm. Adipic acid crystals are characterized in that the concentration of exchangeable water is less than 100 ppm. This is measured as follows: The crystals (300 g) are placed in a hermetic container pre-purged with dry air and with water absorbent material (2 g), the container being maintained at 5 - 25 deg C for 24 hours. The water concentration is the amount of water absorbed by the absorbent per gram of crystals. The total water concentration is greater than the exchangeable water by at least 20 ppm. An Independent claim is also included for the preparation of the crystals which involves subjecting the crystals to a maturation process in an atmosphere of humidity less than 20 g/Nm . La présente invention concerne un procédé de fabrication de cristaux d'acide adipique, ainsi que les cristaux obtenus.Elle est relative plus concrètement à un procédé de traitement des cristaux d'acide adipique obtenus en sortie de cristallisation pour obtenir des cristaux pouvant être stockés avec une faculté de mottage minimale. Ce procédé consiste en une étape de maturation pour éliminer partiellement l'eau contenue dans lesdits cristaux.