標(biāo)準(zhǔn)號：DIN EN ISO 11402-2005
中文標(biāo)準(zhǔn)名稱：酚醛樹脂、氨基樹脂和縮合樹脂.游離甲醛含量的測定
英文標(biāo)準(zhǔn)名稱：Phenolic, amino and condensation resins - Determination of free-formaldehyde content (ISO 11402:2004); German version of EN ISO 11402:2005
標(biāo)準(zhǔn)類型：G31
發(fā)布日期：1999/12/31 12:00:00
實(shí)施日期：1999/12/31 12:00:00
中國標(biāo)準(zhǔn)分類號：G31
國際標(biāo)準(zhǔn)分類號：83.080.10
引用標(biāo)準(zhǔn)：ISO 385-1;ISO 648;ISO 3696;ISO 15528
適用范圍：This International Standard specifies three methods for determining the free-formaldehyde content in the following: a) Phenolic resins, by potentiometric titration in aqueous or organic solution (hydroxylamine hydrochloride procedure). The method is applicable to resins with free-formaldehyde contents up to and including 15 % by mass. For free-formaldehyde contents between 15 % by mass and 30 % by mass, it may be necessary to adjust the concentrations of the standard volumetric solutions used accordingly. b) Amino resins and furan resins (sulfite procedure). The method is applicable to resins resulting from the polycondensation of urea and melamine with formaldehyde and to furan resins resulting from the polycondensation of furfuryl alcohol with formaldehyde without further modification. c) Condensation resins (KCN procedure), including urea resins, furan resins, melamine resins and phenolic resins, as well as combinations and modifications of these resins.