ISO 120:1977-塑料制品；酚醛模塑件——游离氨和铵化合物的测定——比色比较法 -国家数字标准馆

现行 ISO 120:1977

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Plastics — Phenol-formaldehyde mouldings — Determination of free ammonia and ammonium compounds — Colorimetric comparison method 塑料制品；酚醛模塑件——游离氨和铵化合物的测定——比色比较法

发布日期： 1977-10-01

半定量方法的说明。当必须考虑金属嵌件的腐蚀或与制品接触的污染物时，模制制品中游离氨的含量非常重要。蒸馏粉状试料的水萃取物，通过与纳氏试剂反应使蒸馏物着色，并将颜色与标准匹配溶液的颜色进行比较。

Specification of a semi-quantitative method. The content of free ammonia in a moulded article is of importance, when corrosion of metal inserts or contamination in contact with the article has to be considered. Distillation of the aqueous extract from a powdered test portion, coloration of the distillate by reaction with Nessler reagent and comparison of the colour with that of standard matching solutions.

分类信息

发布单位或类别：国际组织-国际标准化组织

ICS分类： 83.080.10塑料 - 热固性塑料

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研制信息

归口单位： ISO/TC 61/SC 12

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