标准编号：ISO 8988:2006
中文名称：塑料 酚醛树脂 六亚甲基四胺含量的测定 基耶达尔法，高氯酸法及盐酸法
英文名称：Plastics — Phenolic resins — Determination of hexamethylenetetramine content — Kjeldahl method, perchloric acid method and hydrochloric acid method
发布日期：2006-09
标准范围
This International Standard specifies three methods for the determination of the hexamethylenetetramine ("hexa") content of phenolic resins. The three methods are equivalent. The Kjeldahl method described in Clause 3 is not applicable if there are other components containing nitrogen in the phenolic resin. The perchloric acid method and the hydrochloric acid method described in Clause 4 and Clause 5, respectively, are only applicable if there are no other basic or acidic additives in the resin. If the resin contains additives which can be oxidized by perchloric acid, only the hydrochloric acid method (Clause 5) is applicable.
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