PRODUCT Properties
| Melting point: | 168-171 °C (lit.) |
| Boiling point: | 255.02°C (rough estimate) |
| Density | 1.4512 (rough estimate) |
| refractive index | 1.4420 (estimate) |
| pka | 7.96±0.23(Predicted) |
| InChI | 1S/C6H4Cl2O2/c7-3-1-5(9)4(8)2-6(3)10/h1-2,9-10H |
| InChIKey | AYNPIRVEWMUJDE-UHFFFAOYSA-N |
| SMILES | Oc1cc(Cl)c(O)cc1Cl |
| CAS DataBase Reference | 824-69-1(CAS DataBase Reference) |
| EPA Substance Registry System | 1,4-Benzenediol, 2,5-dichloro- (824-69-1) |
Description and Uses
2,5-Dichlorohydroquinone (2,5-DCHQ) is a hydroquinone derivative that can be synthesized by reducing 2,5-dichloroquinone using sodium dithionite (Na2S2O4). The kinetics of the reaction of 2,5-DCHQ and N-phenyl-1,4-benzoquinonemonoimine has been studied. The transformation of 2,5-DCHQ to 2-chloromaleylacetate using PcpA (Pcp = pentachlorophenol) protein, isolated from Escherichia coli has been investigated. It is reported to be the degradation product of 2,4,5-trichlorophenoxyacetic acid and γ-hexachlorocyclohexane.
Safety
| Symbol(GHS) |   GHS05,GHS07 |
| Signal word | Danger |
| Hazard statements | H315-H319-H335-H314 |
| Precautionary statements | P261-P280a-P304+P340-P405-P501a-P280-P305+P351+P338-P310 |
| PPE | Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges |
| Hazard Codes | C |
| Risk Statements | 34 |
| Safety Statements | 26-27-36/37/39-45 |
| RIDADR | UN 3261 8/PG 3 |
| WGK Germany | 3 |
| TSCA | TSCA listed |
| Storage Class | 8A - Combustible corrosive hazardous materials |
| Hazard Classifications | Eye Dam. 1 Skin Corr. 1B |
