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Merck
CN

240125

Hydroquinone

≥99%

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:
12352103
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%

autoignition temp.

930 °F

bp

285 °C (lit.)

mp

172-175 °C (lit.)

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Danger

Hazard Classifications

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

Storage Class

13 - Non Combustible Solids

wgk

WGK 3

flash_point_f

329.0 °F - closed cup

flash_point_c

165 °C - closed cup

ppe

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

Regulatory Information

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Certificates of Analysis (COA)

Lot/Batch Number
02029TT
17116LG
13720TA
11110JO
05130EA

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Quan Cheng Chen et al.
Journal of natural products, 71(6), 995-999 (2008-05-29)
Five new pyronane-type monocyclic monoterpenoids, jasminodiol (1), jasminoside H (6), 6'-O-sinapoyljasminoside A (7), 6'-O-sinapoyljasminoside C (8), and jasminoside I (9), together with four known analogues, were isolated from the fruit of Gardenia jasminoides. The structures of the new metabolites were
Woo Duck Seo et al.
European journal of medicinal chemistry, 45(5), 2010-2017 (2010-02-13)
The 4'-(p-toluenesulfonylamino)-4-hydroxychalcone (TSAHC), which bears inhibitory chemotypes for both alpha-glucosidase and tyrosinase, was evaluated for tyrosinase activity and depigmenting ability relative to compounds designed to only target tyrosianse activity. TSAHC emerged to be a competitive reversible inhibitor of mushroom tyrosinase.
Charles Bodet et al.
European journal of medicinal chemistry, 43(8), 1612-1620 (2007-12-21)
The aim of this study was to investigate the effect of 3-(4'-geranyloxy-3'-methoxyphenyl)-2-trans propenoic acid, active principle isolated from Acronychia baueri Schott, and its ester derivatives on biofilm formation by two important oral pathogens, Porphyromonas gingivalis and Streptococcus mutans. The parent
Maya Mori-Hongo et al.
Journal of natural products, 72(1), 63-71 (2008-12-24)
From the roots of Lespedeza cyrtobotrya, 45 flavonoids were isolated along with 20 new and 25 known compounds. Lipophilic flavonoids 2, 3, 7, 9, 11, 28, 30, and 39 exhibited strong inhibitory activities on melanin synthesis in normal human epidermal
Maya Mori-Hongo et al.
Journal of natural products, 72(2), 194-203 (2009-01-10)
In the course of our search for new melanin synthesis inhibitors from plants, 40 new flavonoids and 11 known flavonoids were isolated from the roots of Lespedeza floribunda Bunge. The structures of the new compounds were determined by MS and
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