106-34-3 Usage
Description
Quinhydrone, also known as the addition compound of hydroquinone and p-benzoquinone, is a dark green crystalline powder that forms a hydrogen-bonded 1:1 charge transfer complex. It exhibits semiconducting properties and is widely utilized in various applications due to its unique chemical characteristics.
Uses
Used in pH Determination:
Quinhydrone is used as a redox electrode for measuring the hydrogen ion concentration (pH) of a solution in a chemical experiment. It serves as an alternative to the conventional glass electrode in a pH meter, providing accurate and reliable pH measurements.
Used in Potentiometric Titrations:
Quinhydrone is employed as a general reagent in potentiometric titrations, offering a versatile and efficient method for determining the endpoint of titrations.
Used in Spectrophotometric Analysis:
Quinhydrone is used as a π-acceptor in the formation of charge-transfer complexes of analytes for spectrophotometric analysis, enhancing the sensitivity and accuracy of the technique.
Used in Silicon Substrate Treatment:
Quinhydrone/methanol treatment is utilized for the measurement of carrier lifetime in crystalline silicon substrates, contributing to the advancement of semiconductor technology.
Used in Surface Passivation:
Quinhydrone/ethanol treatment is employed for surface passivation of silicon substrates, improving the performance and stability of silicon-based devices in the electronics industry.
Hazard
Toxic by ingestion.
Purification Methods
Crystallise quinhydrone from H2O at 65o , then dry it in vacuo.[Beilstein 7 H 617, 7 IV 2069.]
Check Digit Verification of cas no
The CAS Registry Mumber 106-34-3 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 1,0 and 6 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 106-34:
(5*1)+(4*0)+(3*6)+(2*3)+(1*4)=33
33 % 10 = 3
So 106-34-3 is a valid CAS Registry Number.
InChI:InChI=1/C6H6O2.C6H4O2/c2*7-5-1-2-6(8)4-3-5/h1-4,7-8H;1-4H
106-34-3Relevant articles and documents
Electrocrystallization of Quinhydrone
Awano, Hiroshi,Sakai, Shoji,Kuriyama, Takashi,Ohba, Yoshihiro
, p. 1737 - 1739 (1994)
Quinhydrone crystals were deposited at 2.0 V vs.Ag onto SnO2-coated glass substrates from aqueous solutions of hydroquinone in the presence of NaCl, HCl, or NaOH. The crystals were observed with backscattered image SEM, and characterized with X-ray diffraction and IR spectroscopy. In situ visible absorption spectra were measured and a mechanism of deposition is discussed.
Process for the preparation of quinhydrones
-
, (2008/06/13)
Disclosed is a process for the preparation of quinhydrones by the catalytic oxidation of aromatic diols with a peroxide in the presence of a catalyst system comprising a cerium carboxylate and a cupric carboxylate.