T/JSAS 086-2025 Greenhouse gas—Quantification method and requirements for carbon footprint of products—Nitrogen fertilizer

Scope

This document specifies the objectives, scope of quantification, inventory analysis, impact assessment, interpretation of results, product carbon footprint reports, and product carbon footprint declarations for nitrogen fertilizer products. This document is applicable to the quantification of nitrogen fertilizer products. Other similar products can refer to this document for guidance on carbon footprint quantification. 5.2.2 Life Cycle Scope Raw Material Acquisition Phase The raw material acquisition phase begins when natural materials are extracted and ends when the raw and auxiliary materials arrive at the component production plant. In addition to extracting natural materials, it also includes the acquisition of recycled materials, pre-processing of raw materials, loading raw materials into production and transportation equipment, and the transportation of raw materials. Energy acquisition and supply are also included in this phase. Typical nitrogen fertilizer raw materials are listed in Table 1. The raw material acquisition phase includes the following processes: a) Preparation of nitrogen and hydrogen; b) Preparation of ingredients (CO2, sulfuric acid, dilute hydrochloric acid, etc.); c) Collection and transportation of nitrogen, hydrogen, and other main raw and auxiliary materials to nitrogen fertilizer processing units; d) Production and transportation of auxiliary materials to nitrogen fertilizer processing units, such as catalysts and stabilizers; e) Production and transportation of packaging materials to nitrogen fertilizer processing units; f) Production and transportation of secondary energy, fuels, and water to nitrogen fertilizer processing units. Table 1: Examples of Typical Nitrogen Fertilizer Raw Materials No. | Product Type | Main Raw and Auxiliary Materials 1 | Synthetic Ammonia | Natural gas, coal, oil, water vapor, nitrogen, catalysts, cooling water, etc. 2 | Urea | Synthetic ammonia, carbon dioxide, additives, anti

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