| Chemical Name | CAS No. | Signal | 中文名 |
|---|---|---|---|
| O-Cresol | 95-48-7 | DANGER | 2-甲酚 |
| o-Dianisidine dihydrochloride | 20325-40-0 | DANGER | 3,3'-二甲氧基联苯胺二盐酸盐 |
| o-Iodonitrobenzene | 609-73-4 | WARNING | 2-硝基碘苯 |
| o-phenylenediamine | 95-54-5 | DANGER | 邻苯二胺 |
| o-Tolidine | 119-93-7 | DANGER | 3,3'-二甲基联苯胺 |
| O-Toluidine | 95-53-4 | DANGER | 2-甲基苯胺 |
| O-Xylene | 95-47-6 | WARNING | 1,2-二甲苯 |
| o-xylyl bromide | 89-92-9 | DANGER | 甲基苄基溴 |
| O,O-Diethyl O-(4-methyl-2-oxo-2H-1-benzopyran-7-yl) phosphorothioate | 299-45-6 | DANGER | 扑杀磷 |
| O,O-diethyl phosphorochloridothioate | 2524-04-1 | DANGER | 0,0'-二乙基硫代磷酰氯 |
| Oct-3-yne | 15232-76-5 | DANGER | 3-辛炔 |
| octafluorocyclobutane | 115-25-3 | WARNING | 八氟环丁烷 |
| octanal | 124-13-0 | WARNING | 辛醛 |
| Octane | 111-65-9 | DANGER | 辛烷 |
| Octanedinitrile | 629-40-3 | DANGER | 辛二腈 |
| octanenitrile | 124-12-9 | WARNING | 正辛晴 |
| octanoyl chloride | 111-64-8 | DANGER | 辛酰氯 |
| omethoate | 1113-02-6 | DANGER | 氧乐果 |
| Orthoperiodic acid | 10450-60-9 | DANGER | 高碘酸 |
| osmium tetroxide | 20816-12-0 | DANGER | 四氧化 |
| Oxalyl chloride | 79-37-8 | DANGER | 乙二酰氯 |
| oxamyl | 23135-22-0 | DANGER | 杀线威 |
| oxygen | 7782-44-7 | DANGER | 氧 |
| Oxygen difluoride | 7783-41-7 | DANGER | 二氟化氧 |
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