標準號：DIN EN ISO 3681-2007
中文標準名稱：涂料和清漆的粘合劑.皂化值的測定.滴定法
英文標準名稱：Binders for paints and varnishes - Determination of saponification value - Titrimetric method (ISO 3681:1996); English version of DIN EN ISO 3681:2007-10
標準類型：G52
發布日期：1999/12/31 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：G52
國際標準分類號：87.060.20
引用標準：ISO 385-1-1984;ISO 648-1977;ISO 842-1984;ISO 3696-1987
適用范圍：This international Standard specifies a titrimetric metohd for determining the esterified-acid content in binders for paints and varnishes,free acids and acid anhydrides being necessarily included in the result obtained.Because different binders vary in their resistance to saponification,this international Standard is of limited applicability.If necessary,completeness of saponification may be checked by repeating the test under more severe conditions achieved by the use of longer saponification time,more concentrated potassium hydroxide solution,or a higher-boiling alcohol as solvent.Annex A specifies a procedure suitable for binders that saponify with difficulty.Themethod is not applicable to those materials that show further reaction with alkalis beyond normal saponification.