T/CCEIA 0004-2025 Lithium Carboxymethyl Cellulose for Batteries

Scope

Scope: This document specifies the technical requirements, test methods, inspection rules, and packaging, marking, storage, and transportation for carboxymethyl cellulose lithium for batteries. This document applies to the production, inspection, and acceptance of carboxymethyl cellulose lithium products for batteries. Main technical content: 5. Technical requirements 5.1 Sensory properties: Sensory properties shall comply with the requirements specified in Table 1. Table 1 Sensory item Requirements Color: White or light yellow State: Granular or powdered 5.2 Physicochemical indicators: Physicochemical indicators shall comply with the requirements specified in Table 2. Table 2 Physicochemical indicator Item Requirements Product classification Ultra-low viscosity (UL) Low viscosity (L) Medium viscosity (M) High viscosity (H) Very high viscosity (VH) Ultra-high viscosity (UH) Viscosity (excluding water at 25°C ± 0.2°C)/(mPa·s) Concentration 2% aqueous solution 1% aqueous solution 60 r/min <25 25–399 ———— 30 r/min 400–2000 200–499 12 r/min ———— 500–10000 >10000 Substitution degree 0.2–2.0 Water content (mass fraction) /% 3.0–10.0 pH value 6.5–8.5 Purity a (mass fraction) ≥99.7 Neutralizing salt b (mass fraction) ≤0.3 Metal impurities (mass fraction) /10-6 Na ≤1500, Fe ≤20, Co ≤10, Ni ≤10, Cu ≤10, Zn ≤10, Cr Lithium content (mass fraction) 0.5–5.0 Gel particles (0.85≤ substitution degree ≤2.0) / (particles/cm2) ≤2 a Purity equals 100% minus the mass fraction of neutralizing salt. Due to different production processes, the types of salt produced vary, resulting in different methods of calculating purity. b Neutralizing salt is typically lithium chloride or lithium sulfate. 5.3 Other products shall also meet the following requirements: — REACH Regulation (Regulation on the Registration, Evaluation, Authorization, and Restriction of Chemicals) No. 1907/20

Development Information

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