Home / Standards / GB 1261-1977 GB 1261-1977 Abolished Basic chemical reagents(volumetry)--Anhydrous paramino-phenyl-sulfonic acid 基准化学试剂(容量) 无水对氨基苯磺酸 Standard Type GB ICS 71.040.30 CCS G61 Status 废止 Issue Date 1977-02-04 Implementation 1977-10-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A