"O Tolidine" CNS Standards List| Counterbores Hexagon | Cast Steel | Glossary terms | Method 42 | Method Test | Method test | Polypropylene | Optical insertion | |
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CNS 2027
2020 Edition O-Tolidine 化學試藥（３，3 ′–二甲基聯苯胺） |
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CNS 13255
2018 Edition O-Tolidine Dihydrochloride 3, 3'-Dimethylbenzidine Dihydrochloride 二氫氯化鄰聯甲苯胺（試藥） |
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