Home / Standards / GB/T 31531-2025 GB/T 31531-2025 Active Determination of quinoline and isoquinoline in dyestuffs and textile dyeing and finishing auxiliaries 染料及纺织染整助剂产品中喹啉及异喹啉的测定 Standard Type GBT ICS 71.100.01;87.060.10 CCS G55 Status 现行 Issue Date 2025-08-29 Implementation 2026-03-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A