请选择需要导出的字段：
ISO 1388-3-1981
Ethanol for industrial use -- Methods of test -- Part 3: Estimation of content of carbonyl compounds present in small amounts -- Photometric method
适用范围：The method is applicable to products having carbonyl compounds contents between 0.00025 % (m/m) and 0.01 % (m/m). The principle is based on reaction in acid medium of the carbonyl compounds in a test portion with 2,4-dinitrophenylhydrazine. Formation of the corresponding 2,4-dinitrophenylhydrazones which, after making the solution alkaline, take on a red coloration. Photometric measurement of this red coloration at a wavelength of about 445 nm. - International Standards ISO 1388/1 to 1388/12 cancel and replace ISO Recommendation R 1388-1970 of which they constitute a technical revision.
知识产权声明 | 服务承诺 | 联系我们 | 客户服务 | 关于我们
网络出版服务许可证：(署)网出证(京)字第072号 互联网药品信息服务资格证书号：(京)-经营性-2016-0015 信息网络传播视听节目许可证 许可证号：0108284
万方数据标准管理系统V2.0 证书号:软著登字第11198474号
京ICP证：010071 京公网安备11010802020237号 京ICP备08100800号-1
客服电话：4000115888 客服邮箱：service@wanfangdata.com.cn 违法和不良信息举报电话：4000115888 举报邮箱：problem@wanfangdata.com.cn 举报专区：https://www.12377.cn
万方数据知识服务平台--国家科技支撑计划资助项目（编号：2006BAH03B01）©北京万方数据股份有限公司 万方数据电子出版社
