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Key Documents

282960

Sigma-Aldrich

Quinhydrone

97%

Synonym(s):

Hydroquinone: benzoquinone 1:1 complex

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About This Item

Linear Formula:
C6H4(OH)2 · C6H4O2
CAS Number:
Molecular Weight:
218.21
Beilstein:
3919222
EC Number:
MDL number:
UNSPSC Code:
12352100
PubChem Substance ID:
NACRES:
NA.22

Assay

97%

form

powder

composition

Carbon, 63.7-68.4%

mp

167-172 °C (lit.)

SMILES string

Oc1ccc(O)cc1.O=C2C=CC(=O)C=C2

InChI

1S/C6H6O2.C6H4O2/c2*7-5-1-2-6(8)4-3-5/h1-4,7-8H;1-4H

InChI key

BDJXVNRFAQSMAA-UHFFFAOYSA-N

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General description

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.

Application

Quinhydrone is a general reagent used in potentiometric titrations. It can also be used as a π-acceptor in the formation of charge-transfer complex of analytes for spectrophotometric analysis.

Pictograms

Skull and crossbonesEnvironment

Signal Word

Danger

Hazard Statements

Hazard Classifications

Acute Tox. 3 Oral - Aquatic Acute 1

Storage Class Code

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Photoinduced electron transfer from porphyrin to C60 in a C60| porphyrin double-layer photoelectrochemical cell.
Takahashi K, et al.
Journal of Electroanalytical Chemistry, 426(1-2), 85-90 (1997)
p-Benzosemiquinone radical anion on silver nanoparticles in water.
Tripathi G N R
Journal of the American Chemical Society, 125(5), 1178-1179 (2003)
Surface passivation effect of silicon substrates due to quinhydrone/ethanol treatment.
Takato H, et al.
Jpn J. App. Phys., Part I, 40(10A), L1003-L1003 (2001)
The effect of the hydrogen ion concentration upon the salt error of the quinhydrone electrode.
J L GABBARD
Journal of the American Chemical Society, 69(3), 533-536 (1947-03-01)
Luigi Falciola et al.
Annali di chimica, 92(10), 945-954 (2002-12-20)
The rationale for the extension of the rH-metric standardization and measurements to aqueous-organic solvent mixtures is here introduced, and examples of establishment of the ranges of conventional rH-metric scales as well as primary standards rHs in some typical aqueous-organic solvent

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