T/CCEIA 0003-2024 Dyeing additive - Sodium Carboxymethyl Cellulose

Scope

Main Technical Content: 4.1 Sensory Requirements The sensory requirements shall comply with Table 1. Table 1: Sensory Requirements Item Requirements Test Method Color White to light yellow or brownish yellow Take a sample and place it in a clean, dry white porcelain dish. Observe its color and state under natural light. State Granular or powdered 4.2 Technical Indicators 4.2.1 Carboxymethylcellulose sodium products without added inorganic salts and high-molecular organic substances The technical indicators of carboxymethylcellulose sodium products without added inorganic salts and high-molecular organic substances shall comply with Table 2. Table 2: Technical Indicators of Carboxymethylcellulose Sodium Products without Added Inorganic Salts and High-Molecular Organic Substances Item Indicator Test Method Viscosity (1% aqueous solution, 20 °C) / (mPa·s) ≥ 20 5.2 Determination of viscosity Insoluble matter (1% aqueous solution) / (particles/25 cm2) ≤ 70 5.3 Determination of insoluble matter Salt resistance (1% aqueous solution) (mass fraction) / % ≥ 50 5.4 Determination of salt resistance pH (1% aqueous solution) 6.5–9.0 5.5 Determination of pH Water content (mass fraction) / % ≤ 15.0 GB 5009.3 Direct Drying Method a Printing viscosity index (PVI value) 0.2–0.8 5.6 Determination of printing viscosity index (PVI value) Water retention / mm ≤ 4.0 5.7 Determination of water retention Screenability / s ≤ 60 5.8 Determination of screenability Degree of substitution 0.90–2.50 5.9 Determination of degree of substitution Carboxymethylcellulose sodium content b (mass fraction) / % ≥ 50 GB 1886.232-2016 A.3, A.7, A.8a Drying temperature: 105 °C ± 2 °C, drying time: 2 h. b Carboxymethylcellulose sodium content: refers to 100% minus the mass fraction of sodium acetate and chloride. 4.2.2 Carboxymethylcellulose sodium products with added inorganic salts and high-molecular organ

Development Information

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