T/AQB 59-2024 Ammonolysis by-product: Ammonium chloride

Scope

Scope: This document specifies the requirements, test methods, inspection rules, labeling, packaging, transportation, and storage for ammonium chloride, a by-product of the ammonolysis process. This document applies to ammonium chloride obtained by adsorption, concentration, and crystallization from ammonium chloride brine produced by the reduction reaction of nitrochlorobenzene, and is used as a by-product for the production of compound fertilizer raw materials. Main technical content: I. Introduction This group standard aims to standardize the production, quality control, and application of ammonium chloride by-products from the ammonolysis process, in order to meet market demand and industry development requirements. The following details the main provisions of this standard. II. Scope and Applicable Fields This standard applies to ammonium chloride by-products obtained by adsorption, concentration, and crystallization from ammonium chloride brine produced by the reduction reaction of nitrochlorobenzene, and is primarily used as a raw material for the production of compound fertilizer. III. Main Technical Indicators 1. Chemical Composition - Ammonium chloride mass fraction: not less than 99.0% to ensure the basic performance and usage effect of the product. - Nitrogen mass fraction (dry basis): not less than 24.5% to ensure the basic performance and effect of the product in agricultural applications. - Water mass fraction: not more than 0.5% to monitor the drying effect of the production process and ensure good product fluidity. - Impurity content: heavy metals such as arsenic, cadmium, lead, chromium, and mercury shall not exceed 0.0020%, 0.00005%, 0.0100%, 0.0025%, and 0.0050%, respectively, to ensure the safety and stability of the product and prevent harm to the ecological environment. - pH value (200g/L solution): pH value between 4.0 and 5.8. - M-nitroaniline mass fraction: not more than 0.0010% to ensure the safety and stability

Development Information

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