T/FJAS 015-2022 Active

Scope: This document specifies the terms and definitions, technical requirements, sampling, testing methods, inspection rules, marking, labeling and accompanying documents, packaging, transportation, and storage for high-purity sodium hydroxide used in lithium battery materials. This document applies to high-purity sodium hydroxide liquid products used in lithium battery materials, which are produced by electrolysis using ion-exchange membranes with sodium chloride as the raw material. Sodium hydroxide products produced by other processes may be implemented with reference to this document. Main technical content: Table 1 - Technical requirements for high-purity sodium hydroxide used in lithium battery materials. Quality fraction (%): Project Indicator Requirement Sodium hydroxide (calculated as NaOH) ≥ 32.0 and ≤ 32.3 Sodium carbonate (calculated as Na2CO3) ≤ 0.02 Sodium chloride (calculated as NaCl) ≤ 0.003 Sodium sulfate (calculated as Na2SO4) ≤ 0.001 Sodium chlorate (calculated as NaClO3) ≤ 0.001 Iron (calculated as Fe) ≤ 0.0001 Silicon (calculated as Si) ≤ 0.0005 Aluminum (calculated as Al) ≤ 0.0001 Calcium (calculated as Ca) ≤ 0.00005 Magnesium (calculated as Mg) ≤ 0.0001 Copper (calculated as Cu) ≤ 0.00001 Zinc (calculated as Zn) ≤ 0.00001 Nickel (calculated as Ni) ≤ 0.00004 Lead (calculated as Pb) ≤ 0.00001 Magnetic foreign objects ≤ 0.000002