ISO 5280-1979 - 中外标准 - - 1979/7 - 现行
Applicable to products which consist essentially of xylene isomers ?C6H4 -(CH3 )2 ü and ethylbenzene (C6H5 -C2 H5). Specifies the requirements and test methods. The required characteristics are shown in a table.
规范特性材料规范交货条件芳烃二甲苯物理性能Aromatic hydrocarbonsDelivery conditionsMaterials specificationPropertiesSpecificationsXylene
ISO 5274-1979 - 中外标准 - - 1979/7 - 废止
Specifies an acid washing test. Gives some indication of the degree of refining but does not give a precise measure of the amount of unsaturated compounds present as different unsaturated compounds produce different colourations with sulphuric acid. Shaking together of equal volumes of the sample and 95 % (m/m) sulphuric acid. Comparison of the colour of the acid layer with that of standard matching solutions.
ISO 5787-1979 - 中外标准 - - 1979/7 - 废止
Specifies procedures for determining the acidity , the residue on evaporation and the water content by the Karl Fischer method. The acidity test is applicable to products having acidities, expressed as hydrochloric acid, between 1 and 50 mg/kg. For determination of ressidue on evaporation the method specified in ISO 2210 is recommended which is applicable to products leaving a residue on evaporation equal to or greater than 5 mg/kg. The method for determination of water content is applicable to products having water contents between 5 and 200 mg/kg.
ISO 5789-1979 - 中外标准 - - 1979/7 - 现行
Specifies a method, the principle of which is based on evaporation of a test portion under specified conditions, using special apparatus, and weighing of the residue after evaporation. Details the procedure and provides information on the expression of results and the data to be included in the test report.
化学分析含量测定化学分析和试验烃类非挥发物质卤化烃卤代烃化学残余物Chemical analysis and testingChemical residuesDetermination of contentHalogenated hydrocarbonsHydrocarbons
ISO 5276-1979 - 中外标准 - - 1979/7 - 废止
Mixing a test portion to which a mixed indicator (bromocresol green/alizarin red S) has been added with water by shaking. Comparison of the colour of the aqueous layer with that of a neutral solution of the indicator.
CNS 4887-1979 - 中外标准 - - 1979/6 - 现行
CNS 4886-1979 - 中外标准 - - 1979/6 - 现行
CNS 4885-1979 - 中外标准 - - 1979/6 - 现行
CNS 4884-1979 - 中外标准 - - 1979/6 - 现行
CNS 4883-1979 - 中外标准 - - 1979/6 - 现行