標準號：BS EN 14668-2005
中文標準名稱：表面活性劑.原材料和按配方制造產品中季銨表面活性劑測定.電位測量兩相滴定法
英文標準名稱：Surface active agents - Determination of quaternary ammonium surface active agents in raw materials and formulated products - Potentiometric two-phase titration method
標準類型：G72
發布日期：2005/9/5 12:00:00
實施日期：2005/9/5 12:00:00
中國標準分類號：G72
國際標準分類號：71.100.40
引用標準：EN 14670;EN ISO 3696;ISO 607
適用范圍：This European Standard specifies a method for the determination of the content of quaternary ammonium surface active agents in raw materials and formulated products, defined as being the amount of quaternary ammonium surface active agents expressed in millimoles per 100 g of product. NOTE 1 The applicability in products different than those tested should be checked in each particular case. NOTE 2 In comparison to usual laboratory two-phase titration with visual endpoint determination (see ISO 2871-1 and ISO 2871-2) potentiometric titration offers the advantage of automation, operator-dependent differences in recognising the equivalence point can be neglected, and a non-critical solvent replaces the toxicologically critical chloroform.