synthèse du nitrate d'ammonium


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La formation de nitrate d'ammonium nécessite de transformer préalablement de l'ammo- niac en acide nitrique par oxydation catalytique ce qui est aussi un 

  • Ils sont le résultat d'une nitrification de l'ion ammonium (NH4+), présent dans l'eau et le sol, qui est oxydé en nitrites par les bactéries du genre Nitrosomonas, puis en nitrates par les bactéries du genre Nitrobacter (Santé Canada, 1992).

  • Comment est produit le nitrate ?

    Le nitrate est une substance chimique naturelle qui entre dans le cycle de l'azote.
    Il est présent à l'état naturel partout dans l'environnement.
    Il se crée dans l'atmosphère lors de l'oxydation de l'azote par les microorganismes des plantes, du sol ou de l'eau.

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    Pourquoi le nitrate d’ammonium ne peut-il pas être mis sur le marché?

    • Ne peut être mis sur le marché pour la première fois après le 27 juin 2010, en tant que substance, ou dans des mé- langes contenant plus de 28 % en poids d’azote provenant du nitrate d’ammonium, pour utilisation en tant qu’engrais solide, simple ou composé, à moins que l’engrais ne soit conforme aux dispositions techniques concernant les en-

    Quels sont les contrôles de l'exposition au nitrate d'ammonium?

    • selon le Règlement (CE) no 1907/2006 (REACH) Nitrate d'ammonium ?98 %, extra pur numéro d'article: X988 Belgique (fr) Page 5 / 17 8.2 Contrôles de l'exposition Mesures de protection individuelle (équipement de protection individuelle) Protection des yeux/du visage Utilisation des lunettes de protection avec une protection sur les côtés.

    Quel est le taux de combustion moyen d'un mélange d'ammonium?

    • selon le Règlement (CE) no 1907/2006 (REACH) Nitrate d'ammonium ?98 %, extra pur numéro d'article: X988 Belgique (fr) Page 7 / 17 Inflammation spontanée Taux de combustion moyen est égale ou supé- rieure à celle d'un mélange 1:2 (en masse) de per-










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