GB/T 32117-2015: Translated English of Chinese Standard. (GBT 32117-2015, GB/T32117-2015, GBT32117-2015): Cellulose diacetate flake for industrial use
This standard specifies the terms and definitions, categories, requirements, test methods, inspection rules, markings, packaging, transportation, storage and shelf life of cellulose diacetate flake for industrial use.
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Normative Determination of moisture
Appendix F Normative Determination of heat stability
accordance with formula accurate to 0.01 acetic acid acetyl value acid standard titration Analytical balance arithmetic mean batch number burette calculated in accordance calculation results retain Cellulose diacetate colorimeter conical flask constant temperature water culture dish decimal places Design value determination in accordance Determination procedures filter paper free acid g of sample GB/T grams g heat stability hydroxide standard solution indication line intrinsic viscosity magnetic stirrer mass fraction Method summary milliliters mL minimum scale value mL of water moisture Molar mass mold piece Normative oven parallel determination results Phenolphthalein indicator PIPETTE production date provisions of Appendix r/min Reagents Result calculation Sample mass sensitivity of 0.1 slurry tube sodium hydroxide standard space color measurement Spinning type diacetate standard titration solution sulfuric acid standard taking the arithmetic temperature water bath three-dimensional uniform color titration solution consumed tristimulus values type diacetate flakes uniform color space V1 accurate volumetric flask weighing bottle