Quinhydrone
- CAS No.
- 106-34-3
- Chemical Name:
- Quinhydrone
- Synonyms
- GREEN HYDROQUINONE;HYDROQUINONE:BENZOQUINONE 1:1 COMPLEX;Hydroquinone Monoester,Hydroquinone diester;Chinhydron;uinhydrone;QUINHYDRONE;QuinhydroneGr;Quinhydrone,98%;Quinhydrone 97%;benzoquinhydrone
- CBNumber:
- CB9292163
- Molecular Formula:
- C12H10O4
- Molecular Weight:
- 218.21
- MDL Number:
- MFCD00010310
- MOL File:
- 106-34-3.mol
- MSDS File:
- SDS
- TDS File:
- TDS
| Melting point | 167-172 °C (lit.) |
|---|---|
| Boiling point | 285 °C |
| Density | 1.32 |
| bulk density | 300kg/m3 |
| refractive index | 1.4270 (estimate) |
| storage temp. | Store below +30°C. |
| solubility | 4g/l |
| form | Crystalline Powder |
| color | Dark green |
| Specific Gravity | 0.863 (20/4℃) |
| Water Solubility | 4 g/L (20 ºC) |
| Sensitive | Light Sensitive |
| Merck | 14,8058 |
| BRN | 3919222 |
| Stability | Stable. Incompatible with strong oxidizing agents. |
| InChI | 1S/C6H6O2.C6H4O2/c2*7-5-1-2-6(8)4-3-5/h1-4,7-8H;1-4H |
| InChIKey | BDJXVNRFAQSMAA-UHFFFAOYSA-N |
| SMILES | Oc1ccc(O)cc1.O=C2C=CC(=O)C=C2 |
| LogP | 0.644 (est) |
| CAS DataBase Reference | 106-34-3(CAS DataBase Reference) |
| EWG's Food Scores | 1 |
| FDA UNII | P4A66LQ3QJ |
| NIST Chemistry Reference | Quinhydrone(106-34-3) |
| EPA Substance Registry System | Quinhydrone (106-34-3) |
| UNSPSC Code | 12352115 |
| NACRES | NA.22 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |   GHS06,GHS09 |
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|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Danger | |||||||||
| Hazard statements | H301-H400 | |||||||||
| Precautionary statements | P264-P270-P273-P301+P310-P391-P405 | |||||||||
| PPE | dust mask type N95 (US), Eyeshields, Faceshields, Gloves | |||||||||
| Hazard Codes | Xn,N | |||||||||
| Risk Statements | 22-36/37/38-50 | |||||||||
| Safety Statements | 26-36-61-37/39-29 | |||||||||
| RIDADR | UN 2811 6.1/PG 3 | |||||||||
| WGK Germany | 3 | |||||||||
| RTECS | VA4550000 | |||||||||
| TSCA | TSCA listed | |||||||||
| HS Code | 2942 00 00 | |||||||||
| HazardClass | 6.1 | |||||||||
| PackingGroup | III | |||||||||
| Storage Class | 6.1C - Combustible acute toxic Cat.3 toxic compounds or compounds which causing chronic effects |
|||||||||
| Hazard Classifications | Acute Tox. 3 Oral Aquatic Acute 1 |
|||||||||
| Toxicity | LD50 orally in rats: 225 mg/kg (Woodward) | |||||||||
| NFPA 704 |
|
Quinhydrone price More Price(38)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | 282960 | Quinhydrone 97% | 106-34-3 | 25g | $42.8 | 2026-04-30 | Buy |
| Sigma-Aldrich | 282960 | Quinhydrone 97% | 106-34-3 | 100g | $135 | 2026-04-30 | Buy |
| Sigma-Aldrich | 1.02284 | Quinhydrone GR for analysis | 106-34-3 | 100g | $220 | 2024-03-01 | Buy |
| TCI Chemical | Q0008 | Quinhydrone | 106-34-3 | 25g | $34 | 2026-04-30 | Buy |
| TCI Chemical | Q0008 | Quinhydrone | 106-34-3 | 100g | $94 | 2026-04-30 | Buy |
Quinhydrone Chemical Properties, Uses, Production
Chemical Properties
a dark green crystalline powder which is a complex formed by benzoquinone and hydroquinone.
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.
Uses
In pH determinations (quinhydrone electrode).
Uses
Quinhydrone 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.
Uses
Used 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.
Definition
ChEBI: Quinhydrone is an addition compound. It contains a 1,4-benzoquinone and a hydroquinone.
Definition
The so-called quinhydrone electrode, containing equivalent amounts of p-benzoquinone and hydroquinone, is used to determine hydrogen ion concentrations of unknown solutions. Hydroquinone is used principally as a photographic developing agent. The main advantages of the quinhydrone electrode are low internal resistance, rapid response, high accuracy, simplicity, free of errors due to the presence of nonreducing gases, and free of salt errors. Major limitations are that it contaminates the solution, cannot be used to monitor a flowing solution, the solution must be free of strong oxidizing and reducing agents, and it is limited to a pH range of 1 to 9. In alkaline solution, the weakly acidic H2Q is neutralized and is subject to oxidation by air and dissolved oxygen. The main application of the quinhydrone electrode is in nonaqueous solvents where reproducible results are obtained in a variety of solvents. The tetra-chloro derivative (chloranil electrode) is even more useful.
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.
Hazard
Toxic by ingestion.
Purification Methods
Crystallise quinhydrone from H2O at 65o , then dry it in vacuo.[Beilstein 7 H 617, 7 IV 2069.]
Quinhydrone Preparation Products And Raw materials
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Guangdong wengjiang Chemical Reagent Co., Ltd. | 0751-2815987 13927875076 | 3007432263@qq.com | China | 9999 | 58 |
| Beijing Solarbio Science & Tecnology Co., Ltd. | 010-50973130 17801761073 | Gsiyu@solarbio.com | China | 50460 | 58 |
| J & K SCIENTIFIC LTD. | 18210857532 18210857532 | jkinfo@jkchemical.com | China | 96815 | 76 |
| Meryer (Shanghai) Chemical Technology Co., Ltd. | 4006356688 18621169109 | market03@meryer.com | China | 40202 | 62 |
| future industrial shanghai co., ltd | 400-0066400 13621662912 | sales@jonln.com | China | 1989 | 65 |
| Alfa Aesar | 400-6106006 | saleschina@alfa-asia.com | China | 30103 | 84 |
| TCI (Shanghai) Development Co., Ltd. | 021-67121386 | Sales-CN@TCIchemicals.com | China | 24512 | 81 |
| Beijing HwrkChemical Technology Co., Ltd | 89508211 18501085097 | sales.bj@hwrkchemical.com | China | 9407 | 55 |
| Energy Chemical | 400-0056266 | sales8178@energy-chemical.com | China | 44850 | 61 |
| Beijing Ouhe Technology Co., Ltd | 13552068683 13522913783 | 2355560935@qq.com | China | 11777 | 60 |
Related articles
- Quinhydrone: Applications & Electrochemical Properties
- Quinhydrone is used for silicon passivation and titrations. As a charge-transfer cocrystal, it acts as a stable cathode for aq....
- Mar 16,2026
View Latest Price from Quinhydrone manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2026-03-20 | Quinhydrone
106-34-3
|
$25.00 | 100ASSAYS | 99.5% | 100 mt | Hebei Chuanghai Biotechnology Co., Ltd | |
 |
2020-09-03 | Quinhydrone
106-34-3
|
$50.00-80.00 | 1KG | 99.9% | 20tons | Hebei Runbin Biotechnology Co. LTD | |
 |
2019-07-06 | Quinhydrone
106-34-3
|
$11.00 | 1KG | 99% | 1000KG | Career Henan Chemical Co |
-
- Quinhydrone
106-34-3
- $25.00
- 99.5%
- Hebei Chuanghai Biotechnology Co., Ltd
-
- Quinhydrone
106-34-3
- $50.00-80.00
- 99.9%
- Hebei Runbin Biotechnology Co. LTD
-
- Quinhydrone
106-34-3
- $11.00
- 99%
- Career Henan Chemical Co
