Home / Standards / GB/T 21541-2008 GB/T 21541-2008 Active Chlorinated methanes for industrial use - Determination of purity - Gas chromatography 工业用氯代甲烷类产品纯度的测定 气相色谱法 Standard Type GBT ICS 71.080.20 CCS G16 Status 现行 Issue Date 2008-04-01 Implementation 2008-09-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A