首页 > 资源导航 > 标准 > 化学 > 化工综合
标准分类
发布日期
全部
订阅
收起
标准
  • ISO 6713-1984 - 中外标准 - - 1984/11 - 现行
    The principle of the method consists in the dilution of a sample with a suitable solvent, separation of the pigment by centrifugation. Three methods, dependent on the binder of the product being examined, are described. Extraction of the separated pigment with hydrochloric acid at a ratio of mass:volume of 1:15, except for the determination of "soluble" lead; in that case, extraction is carried out at a ratio of 1:1000. Evaporation to dryness of the liquid portion obtained by centrifuging, analysis by dry ashing and extraction of the ash with nitric acid. For coating materials in powder form, extraction is carried out without prior separation of the binder.
    可溶物质化学试剂酸萃取物清漆涂料化学分析和试验溶质溶解度化学分析印刷油墨颜料天然漆试样制备试验定义金属含量测定生产Acid extractsAcidsChemical analysis and testingChemical reagentsDefinitionsDetermination of contentDyesLacquersLeadMetalsPaintsPigmentsPrinting inksProductionSolubilitySolutesSpecimen preparationTestingVarnishes
  • 服务由 质检出版社 提供

    GB/T 4472-1984 - 中外标准 - - 1984/6 - 作废
    本通则适用于一般化工产品密度、相对密度的测定;不适用于炭黑和开孔式泡沫橡胶或塑料等特殊状态的化工产品密度、相对密度的测定。
    化学工业相对密度测量密度产品化学工业产品密度相对密度测量
回到顶部
选择了条数据