Basic information
- CAS
106-34-3- Standard SMILES
O=C1C=CC(=O)C=C1.Oc1ccc(O)cc1- InChIKey
BDJXVNRFAQSMAA-UHFFFAOYSA-N- Molecular formula
- C6H6O2.C6H4O2
- Average molar mass
- 218.2 g/mol
- Monoisotopic mass
- 218.0579088
Overview
Quinhydrone is an addition compound. It contains a 1,4-benzoquinone and a hydroquinone.
Names & identifiers
- Preferred name
- Quinhydrone
- IUPAC
- benzene-1,4-diol;cyclohexa-2,5-diene-1,4-dione
- English name
- Quinhydrone
- Molecular formula
- C12H10O4
- Molecular weight
- 218.21
Names & synonyms
Quinhydrone106-34-3Green hydroquinonep-BenzoquinhydroneChinhydronP4A66LQ3QJDTXSID9059337NSC-36325CHEBI:26491RefChem:178191DTXCID0032992203-387-6
Show more names
HYDROQUINONE:BENZOQUINONE 1:1 COMPLEXHydroquinone Monoester,Hydroquinone diesteruinhydroneQuinhydroneGrQuinhydrone,98%Quinhydrone 97%benzoquinhydrone
Benzoquinone-hydroquinonep-Benzoquinone-hydroquinone compound (1:1).beta.-QuinhydroneMFCD00010310benzene-1,4-diol;cyclohexa-2,5-diene-1,4-dioneWLN: L6V DVJ & QR DQ2,5-Cyclohexadiene-1,4-dione compd with 1,4-benzenediol (1:1)Chinhydron [Czech]
Database identifiers
- CAS
106-34-3- PubChem CID
- 7801
- DTXSID
DTXSID9059337- ChEBI
CHEBI:26491- UNII
- P4A66LQ3QJ
- EC Number
- 203-387-6
Properties
Computed structural properties
- Topological polar surface area
- 74.6 Ų
- Hydrogen bond donors
- 2
- Hydrogen bond acceptors
- 4
- Rotatable bonds
- 0
- Heavy atoms
- 16
- Formal charge
- 0
- Complexity
- 204
Experimental & physicochemical properties
Chemical ClassesOther Classes -> Phenols
Density1.4 @25 °C
Melting Point171 °C
Vapor Pressure0.00000001 [mmHg]
Physical DescriptionGreen solid with a metallic luster; [Merck Index] Dark green crystalline powder; [Acros Organics MSDS]
Physicochemical properties
- Melting point
- 167 · 167-172 °C (lit.)
- Boiling point
- 285 °C · 285 °C
- Density
- 1.32 · 1.32
- bulk density
- 300 kg/m3 · 300kg/m3
- refractive index
- 1.427 · 1.4270 (estimate)
- storage temp.
- 30 °C · Store below +30°C.
- solubility
- 4 g/l · 4g/l
- form
- Crystalline Powder
Safety & regulation
Safety information is for reference only and does not replace the supplier’s Safety Data Sheet (SDS), applicable regulations, or professional assessment.
GHS classification
GHS Classification
Danger
H301 (100%): Toxic if swallowed [Danger Acute toxicity, oral]
P261, P264, P264+P265, P270, P271, P273, P280, P301+P316, P302+P352, P304+P340, P305+P351+P338, P319, P321, P330, P332+P317, P337+P317, P362+P364, P391, P403+P233, P405, and P501 (click each P-code to see the statement)
Aggregated GHS information provided per 48 reports by companies from 6 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Hazard information
Regulatory Information
Chemical: 2,5-Cyclohexadiene-1, 4-dione, compound with 1,4-benzenediol (1:1)
Quinhydrone: Does not have an individual approval but may be used under an appropriate group standard
Other Safety InformationEvaluation - Hydroquinone and p-benzoquinone
Hazards SummaryAn irritant; Harmful by ingestion; [Acros Organics MSDS] See Hydroquinone., See Quinone.
Hazard Classes and CategoriesAcute Tox. 3 (100%)
Safety & protection
Protective Action Criteria (PAC)
0.68 [mg/m3]
7.4 [mg/m3]
45 [mg/m3]
Safety data
- PPE
- dust mask type N95 (US), Eyeshields, Faceshields, Gloves
Chemistry & industry
Uses & manufacturing
UsesComposed of hydroquinone and quinone (1:1); Used in pH determinations; [Merck Index]
General Manufacturing Information2,5-Cyclohexadiene-1,4-dione, compd. with 1,4-benzenediol (1:1): ACTIVE
Applications
UsesIn pH determinations (quinhydrone electrode).
UsesQuinhydrone is a hydrogen bonded 1:1 charge transfer complex of hydroquinone and p-benzo-quinone having semiconducting properties. Quinhydrone is addition compound of one mol hydroquinone and one mol Benzoquinone. Quinhydrone electrode is a type of redox electrode which can be used to measure the hydrogen ion concentration (pH) of a solution in a chemical experiment. Quinhydrone/methanol treatment for the measurement of carrier lifetime in crystalline silicon substrates has been reported. Surface passivation of silicon substrates by quinhydrone/ethanol treatment has been investigated.
UsesUsed to measure the hydrogen ion concentration (pH) of a solution in a chemical experiment. It provides an alternative to the commonly used glass electrode in a pH meter.
General DescriptionQuinhydrone/methanol treatment for the measurement of carrier lifetime in crystalline silicon substrates has been reported. Surface passivation of silicon substrates by quinhydrone/ethanol treatment has been investigated.
Upstream & downstream products
Upstream raw materials
Suppliers100 total
Related reactions
0 records
No reaction records under the current filter.
Compound notes
Loading…