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Merck
CN

V800213

Sigma-Aldrich

Hydroquinone

≥99%, Vetec™, LR grade

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
Beilstein:
605970
EC Number:
204-617-8
MDL number:
MFCD00002339
UNSPSC Code:
41116107
PubChem Substance ID:
329828929

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Product Name

Hydroquinone, LR, ≥99%

grade

LR

vapor density

3.81 (vs air)

vapor pressure

1 mmHg ( 132 °C)

product line

Vetec™

Assay

≥99%

autoignition temp.

930 °F

bp

285 °C (lit.)

mp

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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Legal Information

Vetec is a 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

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

329.0 °F - closed cup

Flash Point(C)

165 °C - closed cup

Regulatory Information

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Certificates of Analysis (COA)

Lot/Batch Number
BGBC1384V
BGBC0879V
BGBB9700

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P Carbonnelle et al.
Toxicology and applied pharmacology, 132(2), 220-226 (1995-06-01)
Decreased interleukin-1 (IL-1) production by mononuclear phagocytes has been shown to contribute to benzene myelotoxicity in animals. The study presented here was designed to examine the relevance of this mechanism in humans. Fresh human blood monocytes were exposed to 0.001-10
Yaqi Hu et al.
Biosensors & bioelectronics, 47, 45-49 (2013-04-03)
A novel light "on-off" photoelectrochemical sensing for the sensitive determination of hydroquinone was developed based on the porphyrin-functionalized Au nanoparticles on graphene (porphyrin/AuNPs/graphene). Gold nanoparticles (AuNPs) were firstly modified onto graphene sheets using NaBH4 as reductant and the porphyrin/AuNPs/graphene nanocomposites
A P DeCaprio
Critical reviews in toxicology, 29(3), 283-330 (1999-06-24)
Hydroquinone (HQ) is a high-volume commodity chemical used as a reducing agent, antioxidant, polymerization inhibitor, and chemical intermediate. It is also used in over-the-counter (OTC) drugs as an ingredient in skin lighteners and is a natural ingredient in many plant-derived
Douglas McGregor
Critical reviews in toxicology, 37(10), 887-914 (2007-11-21)
The toxicology of hydroquinone has been reviewed on a number of previous occasions. This review targets its potential for carcinogenicity and possible modes of carcinogenic action. The evaluation made by IARC (1999) of its carcinogenic risk to humans was that
Jacob Levitt
Journal of the American Academy of Dermatology, 57(5), 854-872 (2007-05-01)
Recently, the US Food and Drug Administration proposed a ban on over-the-counter hydroquinone mainly on the basis of high absorption, reports of exogenous ochronosis in humans, and murine hepatic adenomas, renal adenomas, and leukemia with large doses over extended time
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