Skip to Content
Merck
All Photos(1)

Key Documents

More Documents

Safety Information

1.04610

Sigma-Aldrich

Hydroquinone

Technipur®

Synonym(s):

1,4-Benzenediol, 1,4-Dihydroxybenzene, 4-Hydroxyphenol, p-Benzenediol, p-Dihydroxybenzene, p-Hydroquinone, p-Hydroxyphenol, Benzoquinol, Quinol, HQ

Sign Into View Organizational & Contract Pricing
All Photos(1)

About This Item

Linear Formula:
C6H4-1,4-(OH)2
CAS Number:
123-31-9
Molecular Weight:
110.11
Beilstein:
605970
MDL number:
MFCD00002339
UNSPSC Code:
41116107
NACRES:
NA.22

vapor density

3.81 (vs air)

Quality Level

200

vapor pressure

1 mmHg ( 132 °C)

autoignition temp.

930 °F

bp

285 °C (lit.)

mp

172-175 °C (lit.)

density

1.358 g/cm3 at 20 °C

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

Looking for similar products? Visit Product Comparison Guide

Application

Hydroquinone can be used as:
  • A reducing agent in the preparation of silver sols, gold nanoparticles and nanorods for material science applications.(1)(2)(3)
  • A polymerization inhibitor in the synthesis of industrially important 4-vinylphenols via decarboxylation of 4-hydroxycinnamic acids.(4)
  • A phase change material (PCM) applicable in solar cooling refrigeration technology.(5)

Legal Information

Technipur 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

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 Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

ISHL Indicated Name

Substances Subject to be Indicated Names

ISHL Notified Names

Substances Subject to be Notified Names

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Controlled particle growth of silver sols through the use of hydroquinone as a selective reducing agent
Gentry ST, et al.
Langmuir, 25(5), 2613-2621 (2009)
Experimental analysis of hydroquinone used as phase change material (PCM) to be applied in solar cooling refrigeration
Gil A, et al.
International Journal of Refrigeration, 39, 95-103 (2014)
High-yield synthesis of gold nanorods with longitudinal SPR peak greater than 1200 nm using hydroquinone as a reducing agent
Vigderman L and Zubarev ER
Chemistry of Materials, 25(8), 1450-1457 (2013)

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service