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  |  |     | # | Species | Formula |    | 2483 | Dichloroacetylene | C2Cl2 |  |    | 2484 | 1,1-Dichloroethylene | C2H2Cl2 |  |    | 2485 | cis-Dichloroethylene | C2H2Cl2 |  |    | 2486 | cis-Dichloroethylene (Geo) | C2H2Cl2 |  |    | 2487 | trans-1,2-Dichloroethylene | C2H2Cl2 |  |    | 2488 | trans-Dichloroethylene | C2H2Cl2 |  |    | 2489 | 1,1-Dichloroethane | C2H4Cl2 |  |    | 2490 | 1,1-Dichloroethane (Geo) | C2H4Cl2 |  |    | 2491 | trans-1,2-Dichloroethane | C2H4Cl2 |  |    | 2492 | trans-1,2-Dichloroethane (Geo) | C2H4Cl2 |  |    | 2493 | 1,2-Dichloropropane | C3H6Cl2 |  |    | 2494 | 1,2-Dichlorobenzene | C6H4Cl2 |  |    | 2495 | 1,3-Dichlorobenzene | C6H4Cl2 |  |    | 2496 | 1,4-Dichlorobenzene | C6H4Cl2 |  |    | 2497 | Be(II)Cl2N2 (MECYBC) (Geo) | H6BeC4N2Cl2 |  |    | 2498 | Be(II)Cl2N2 (MECYBC) | H6BeC4N2Cl2 |  |    | 2499 | Be(II)Cl2N2 (VALHAS) (Geo) | H22BeC8N2Cl2 |  |    | 2500 | Be(II)Cl2N2 (VALHAS) | H22BeC8N2Cl2 |  |    | 2501 | Chlorine monoxide | OCl2 |  |    | 2502 | Cl2O (Geo) | OCl2 |  |    | 2503 | Carbonyl chloride | COCl2 |  | 
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