标准摘要
[中文适用范围]： 本国际标准规定了两种测定染料在有机溶剂中溶解度的方法。 适用于在溶剂的影响下不发生化学变化、在规定的干燥条件下稳定、不挥发的染料。 对于挥发性溶剂（沸点 < 120°C），建议使用重量分析法，对于挥发性较小的溶剂（沸点 > 120°C），建议使用光度分析法。 应根据具体情况选择方法 -视具体情况而定。 这些方法适用于每升溶剂中染料的浓度在 1g 到 1000g 之间。 可以使用更高的浓度，前提是溶液的粘度足以使该过程易于进行。 这些方法不适合用于测定染料中的不溶物。 [外文原描述]： ISO 7579:2009 specifies two methods for determining the solubility of dyestuffs in organic solvents. They are applicable to dyestuffs that do not change chemically under the influence of the solvent and are stable and non-volatile under the specified drying conditions. For volatile solvents (boiling point < 120 °C), the gravimetric procedure is recommended and, for less volatile solvents (boiling point > 120 °C), the photometric procedure is recommended. The choice of procedure should be made on a case-by-case basis. The methods are suitable for concentrations between 1 g and 1 000 g of dyestuff per litre of solvent. Higher concentrations can be used provided the viscosity of the solution is such that the procedure can be carried out readily. The methods are not suitable for the determination of insoluble matter in a dyestuff.
英文名称Dyestuffs — Determination of solubility in organic solvents — Gravimetric and photometric methods