2,5-DICHLOROHYDROQUINONE
- CAS NO.：824-69-1
- Empirical Formula: C6H4Cl2O2
- Molecular Weight: 179
- MDL number: MFCD00041749
- EINECS: 212-533-8
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-04-28 16:56:32
What is 2,5-DICHLOROHYDROQUINONE?
Chemical properties
almost white to pink-brown crystalline powder
Definition
ChEBI: A dichlorohydroquinone that is hydroquinone substituted by chloro groups at positions 2 and 5 respectively.
General Description
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.
Properties of 2,5-DICHLOROHYDROQUINONE
| 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) |
| CAS DataBase Reference | 824-69-1(CAS DataBase Reference) |
| EPA Substance Registry System | 1,4-Benzenediol, 2,5-dichloro- (824-69-1) |
Safety information for 2,5-DICHLOROHYDROQUINONE
| Signal word | Danger |
| Pictogram(s) |
 Corrosion Corrosives GHS05  Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H314:Skin corrosion/irritation H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
| Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P280:Wear protective gloves/protective clothing/eye protection/face protection. P310:Immediately call a POISON CENTER or doctor/physician. P304+P340:IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P405:Store locked up. |
Computed Descriptors for 2,5-DICHLOROHYDROQUINONE
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