DIN EN ISO 11402-2005
酚醛树脂、氨基树脂和缩合树脂.游离甲醛含量的测定

Phenolic, amino and condensation resins - Determination of free-formaldehyde content (ISO 11402:2004); German version of EN ISO 11402:2005


 

 

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标准号
DIN EN ISO 11402-2005
发布日期
2005-09
实施日期
废止日期
中国标准分类号
G31
国际标准分类号
83.080.10
发布单位
DE-DIN
引用标准
ISO 385-1 ISO 648 ISO 3696 ISO 15528
被代替标准
DIN EN ISO 9020-1998 DIN EN ISO 9397-1997 DIN EN ISO 11402-1998 DIN EN ISO 11402-2004
适用范围
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.




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