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ChemicalBook--->CAS DataBase List--->824-69-1

824-69-1

824-69-1 Structure

824-69-1 Structure
IdentificationMore
[Name]

2,5-DICHLOROHYDROQUINONE
[CAS]

824-69-1
[Synonyms]

2,5-DICHLOROHYDROQUINONE
2,5-Dichloro-1,4-benzenediol
2,5-Dichloro-1,4-dihydroxybenzene
2,5-Dichloro-1,4-hydroquinone
2,5-dichloro-4-benzenediol
2,5-Dichloro-p-benzohydroquinone
2,5-Dichloro-p-hydroquinone
Hydroquinone, 2,5-dichloro-
1,4-Dichloro-2,5-dihydroxybenzene
2,5-Dichlorobenzene-1,4-diol
[EINECS(EC#)]

212-533-8
[Molecular Formula]

C6H4Cl2O2
[MDL Number]

MFCD00041749
[Molecular Weight]

179
[MOL File]

824-69-1.mol
Chemical PropertiesBack Directory
[Appearance]

almost white to pink-brown crystalline powder
[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 DataBack Directory
[Hazard Codes ]

C
[Risk Statements ]

R34:Causes burns.
[Safety Statements ]

S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S27:Take off immediately all contaminated clothing .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
[RIDADR ]

UN 3261 8/PG 3
[WGK Germany ]

3
[TSCA ]

Yes
Hazard InformationBack Directory
[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.
Spectrum DetailBack Directory
[Spectrum Detail]

2,5-DICHLOROHYDROQUINONE(824-69-1)IR
Well-known Reagent Company Product InformationBack Directory
[Alfa Aesar]

2,5-Dichlorohydroquinone, 97%(824-69-1)
[Sigma Aldrich]

824-69-1(sigmaaldrich)
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