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H17902

Sigma-Aldrich

Hydroquinone

ReagentPlus®, 99%

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Synonym(s):
1,4-Benzenediol, 1,4-Dihydroxybenzene, HQ
Linear Formula:
C6H4-1,4-(OH)2
CAS Number:
123-31-9
Molecular Weight:
110.11
Beilstein:
605970
EC Number:
204-617-8
MDL number:
MFCD00002339
UNSPSC Code:
12352100
PubChem Substance ID:
24895484
NACRES:
NA.21

vapor density

3.81 (vs air)

Quality Level

200

vapor pressure

1 mmHg ( 132 °C)

product line

ReagentPlus®

Assay

99%

autoignition temp.

930 °F

impurities

≤0.6% water (Karl Fischer)

bp

285 °C (lit.)

mp

171-175 °C
172-175 °C (lit.)

SMILES string

Oc1ccc(O)cc1

InChI

1S/C6H6O2/c7-5-1-2-6(8)4-3-5/h1-4,7-8H

InChI key

QIGBRXMKCJKVMJ-UHFFFAOYSA-N

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General description

Hydroquinone (HQ), a phenolic compound, is also known as 1,4-dihydroxy-benzene. The detection of HQ along with resorcinol and phenol in air samples by synchronous fluorescence method has been proposed. The electrochemical oxidation of HQ has been studied using cyclic and differential pulse voltammetry. Its enthalpies of sublimation, vaporization and fusion have been reported.

Application

Hydroquinone may be used to synthesize bicyclic phosphonate derivative by reacting with phosphonic dichloride.

Legal Information

ReagentPlus is a registered trademark of Merck KGaA, Darmstadt, Germany

Signal Word

Danger

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Carc. 2 - Eye Dam. 1 - Muta. 2 - Skin Sens. 1B

WGK

WGK 3

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

危险化学品

Certificates of Analysis (COA)

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Di-hydroxybenzenes: Catechol, resorcinol, and hydroquinone: Enthalpies of phase transitions revisited.
Verevkin SP and Kozlova SA.
Thermochimica Acta, 471(1), 33-42 (2008)
Reaction of hydroquinone with 2-ethoxyvinylphosphonyl dichloride.
Sadykova YM, et al.
Russian Chemical Bulletin, 61(10), 2009-2009 (2012)
Electrocatalytic activity and simultaneous determination of catechol and hydroquinone at mesoporous platinum electrode.
Ghanem MA.
Electrochemical Communications, 9(10), 2501-2506 (2007)
Determination of phenol, resorcinol and hydroquinone in air samples by synchronous fluorescence using partial least-squares (PLS).
Pistonesi MF, et al.
Talanta, 69(5), 1265-1268 (2006)
Simultaneous determination of hydroquinone and catechol at a glassy carbon electrode modified with multiwall carbon nanotubes.
Qi H and Zhang C.
Electroanalysis, 17(10), 832-838 (2005)
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