HuagongsheHuagongshe Chemistry Print Report · For research reference only
Dichlorodifluoromethane → Difluoromethane
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Dichlorodifluoromethane | HCID 6391 | — |
| Reactant | Cfc 114 | HCID 6429 | — |
| Reactant | Chloropentafluoroethane | HCID 6430 | — |
| Reactant | 1-Chloro-1,1,2,2-tetrafluoroethane | HCID 9632 | — |
| Reactant | Chlorine | HCID 24526 | — |
| Product | Difluoromethane | HCID 6345 | — |
| Product | 1-Chloro-1,1,2,2-tetrafluoroethane | HCID 9632 | — |
| Product | Pentafluoroethane | HCID 9633 | — |
| Product | 1,1,2,2-Tetrafluoroethane | HCID 9667 | — |
Reaction Steps
Hydrodechlorination of the chlorine-containing saturated impurities CHClF2, CCl2F2, CHClFCF3, CHF2CClF2, CCl2FCF3, CClF2CClF2, and CClF2CF3 having boiling points of -40.8° C., -29.8° C., -12° C., -10.2° C., 3.0° C., 3.6° C., and -38.7° C., respectively, gives CH2F2, CHClF2, CH2FCF3, CHF2CHF2, CHClFCF3, CHF2CClF2, and CHF2CF3 having boiling points of -51.7° C., -40.8° C., -26.5° C., -19.7° C., -12° C., -10.2° C., and -48.5° C., respectively. Further hydrodefluorination of CH2F2 and CH2FCF3 would give CH3F (HFC-41) and CH3CF3 (HFC-143a) boiling at -78.5° C. and -47.6° C., respectively.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US06147267 |
| Source dataset | uspto-grants-2000_11 |
| ORD ID | ord-2dcf931a29dc4d7a809a01813189ab77 |
| Source note | uspto-grants-2000_11 |