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Merck
CN

53960

Hydroquinone

≥99.0% (HPLC)

Synonym(s):

1,4-Benzenediol, 1,4-Dihydroxybenzene, HQ

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About This Item

Linear Formula:
C6H4-1,4-(OH)2
CAS Number:
123-31-9
Molecular Weight:
110.11
EC Number:
204-617-8
UNSPSC Code:
12352200
MDL number:
MFCD00002339
Beilstein/REAXYS Number:
605970

Key Documents

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InChI

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

InChI key

QIGBRXMKCJKVMJ-UHFFFAOYSA-N

SMILES string

Oc1ccc(O)cc1

vapor density

3.81 (vs air)

vapor pressure

1 mmHg ( 132 °C)

assay

≥99.0% (HPLC)

autoignition temp.

930 °F

bp

285 °C (lit.)

mp

171-173 °C, 172-175 °C (lit.)

solubility

H2O: 50 mg/mL, clear

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flash_point_c

165 °C - closed cup

signalword

Danger

Hazard Classifications

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

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

329.0 °F - closed cup

ppe

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges

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Se Eun Byeon et al.
Free radical biology & medicine, 57, 105-118 (2013-01-08)
The hydroxylated benzene metabolite hydroquinone (HQ) is mainly generated from benzene, an important industrial chemical, and is also a common dietary component. Although numerous papers have addressed the potential role of HQ in tumorigenic responses, the immunosuppressive and anti-inflammatory effects
Harishchandra Digambar Jirimali et al.
Carbohydrate polymers, 92(1), 641-644 (2012-12-12)
A redox active polymer, hydroquinone modified chitosan (Q-chitosan) was synthesized and characterized by IR and (1)H NMR spectroscopy. The nanocomposite of Q-chitosan with carbon was prepared and used to construct a stable conductive film on the electrode surface. The SEM
Lisa Zaleski et al.
Journal of drugs in dermatology : JDD, 11(11), 1316-1320 (2012-11-09)
Melasma is a complex multifactorial disorder whose pathogenesis is not well understood. In addition to increased pigmentation, increased vascularity associated with pigmentation is present. A variety of topical treatments targeting pigmentation are available with temporary improvement of mainly the epidermal
Koussake Kombaté et al.
International journal of dermatology, 51 Suppl 1, 27-29 (2012-12-12)
This study aims at describing the clinical characteristics of patients with acne using skin bleaching (SB) products. This is a prospective study conducted over 8 months in three dermatology departments and one private clinic. All patients examined for acne were
M Rendon et al.
Annales de dermatologie et de venereologie, 139 Suppl 3, S102-S107 (2012-12-25)
Hyperpigmentation has traditionally been a relatively difficult condition to treat, especially in darker racial ethnic groups. Multiple topical agents available act upon different steps of the pigmentation pathway. We review these topical agents, their mechanisms of action, and their effectiveness
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