ISO 1392:1977 结晶点的测定.一般方法

标准编号：ISO 1392:1977

中文名称：结晶点的测定.一般方法

英文名称：Determination of crystallizing point — General method

发布日期：1977-02

标准范围

该方法适用于约-50°C至约+250°C的范围。可直接对收到的样品或干燥样品进行测定，或同时对两者进行测定。每种材料的具体试验方法将说明在这些条件中的哪种条件下对样品进行试验。该原理基于冷却液体或液化样品，并在规定条件下观察结晶过程中的温度。含水率较高的样品，例如糊状物，在任何情况下都应在干燥前进行干燥。-取代ISO建议R 1392-1970。

The method is applicable in the range from about -50 °C to about +250 °C. the determination can be carried out directly on the sample as received, or on the dried sample, or on both. In which of these conditions the sample is to be tested will be stated in the specific test method for each material. The principle is based on cooling the liquid or liquefied sample and observation of the temperature during crystallization under defined conditions. Samples with a higher water content, e.g. pastes, shall be dried before in every case. - Replaces ISO Recommendation R 1392-1970.

标准预览图