Home / Standards / GB/T 21896-2008 GB/T 21896-2008 Abolished 2-Naphthylamine-1,5-disulfonic acid (Sulphonic Tobias acid ) 2-萘胺-1,5-二磺酸(磺化吐氏酸) Standard Type GBT ICS 87.060.10;71.100.01 CCS G56 Status 废止 Issue Date 2008-05-15 Implementation 2008-11-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A