英文对照版微晶纤维素质量标准.docVIP

题目：微晶纤维素 登记号： 页数：1/13 制定： 审核： 审批： 颁发部门：质量管理部 年 月 日 年 月 日 年 月 日 生效日期： 年 月 日 分发部门： 标题 1.Characters 1.性状 2.Identification A. B. 正文 A white or almost white, fine or granular powder, practically insoluble in water, in acetone, in ethanol, in toluene and in dilute acids and in a 50 g/l solution of sodium hydroxide. 白色或几乎白色，细粉或粒状粉末。不溶于水，丙酮，乙醇，甲苯，稀酸和50g/l的氢氧化钠溶液。 Reagent: Zinc Chloride Solution, Iodinated：Dissolve 20 g of zinc chloride and 6.5 g of potassium iodide in 10.5 ml of water . Add 0.5 g of iodine and shake for 15 minutes, filtering if necessary.Store protected from light. Method: Place about 10 mg on a watch-glass and disperse in 2 ml of iodinated zinc chloride solution R. The substance becomes violet-blue. Apparatus: capillary viscometer Reagent: nitrogen; Cupriethylenediamine Hydroxide Solution ： Use a 1M solution in which the molar ratio of ethylenediamine to copper is 2.00 ± 0.04. Method: 题目：微晶纤维素 审批： 年 月 日 登记号： 页数： 2/13 标题 正文 Transfer 1.300 g to a 125 ml conical flask. Add 25.0 ml of water R and 25.0 ml of 1M cupriethylenediamine hydroxide solution. Immediately purge the solution with nitrogen R, insert the stopper and shake until completely dissolved. Transfer 7.0 ml of the solution to a suitable capillary viscometer (2.2.9). Equilibrate the solution at 25°C ±0.1°C for not less than 5 min. Record the flow time t1 in seconds, between the 2 marks on the viscometer. Calculate the kinematic viscosity υ1 of the solution using the formula: t1(k1) where k1 is the viscometer constant. Dilute a suitable volume of 1M cupriethylenediamine hydroxide solution with an equal volume of water R and measure the flow time t2 using a suitable capillary viscometer. Calculate the kinematic viscosity υ2 of the solvent using the formula: t2(k2) where k2 is the viscometer constant. Determine the relative viscosityηrel of the substance to be examined using the formula: υ1/υ2 Determine the intrinsic viscosity [η]c by i