Key Documents

View All Documentation

Hydroquinone

Name: Hydroquinone
Brand: USP

United States Pharmacopeia (USP) Reference Standard

Synonym(s):

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

Select a Size

Change View

Pack Size	SKU	Availability	Price

About This Item

Linear Formula:

C₆H₄-1,4-(OH)₂

CAS Number:

123-31-9

Molecular Weight:

110.11

UNSPSC Code:

41116107

NACRES:

NA.24

PubChem Substance ID:

329750111

MDL number:

MFCD00002339

Beilstein/REAXYS Number:

605970

Pricing and availability is not currently available.

Technical Service

Need help? Our team of experienced scientists is here for you.

Let Us Assist

Properties

grade

pharmaceutical primary standard

vapor density

3.81 (vs air)

vapor pressure

1 mmHg ( 132 °C)

API family

hydroquinone

autoignition temp.

930 °F

manufacturer/tradename

USP

bp

285 °C (lit.)

mp

172-175 °C (lit.)

application(s)

pharmaceutical (small molecule)

format

neat

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

Description

General description

This product is provided as delivered and specified by the issuing Pharmacopoeia. All information provided in support of this product, including SDS and any product information leaflets have been developed and issued under the Authority of the issuing Pharmacopoeia.For further information and support please go to the website of the issuing Pharmacopoeia.

Application

Hydroquinone USP reference standard, intended for use in specified quality tests and assays as specified in the USP compendia.
Also, for use with USP monographs such as:

Hydroquinone Cream
Hydroquinone Topical Solution

Analysis Note

These products are for test and assay use only. They are not meant for administration to humans or animals and cannot be used to diagnose, treat, or cure diseases of any kind.

Other Notes

Sales restrictions may apply.

Compare Similar Items

View Full Comparison

Show Differences

1 of 1

This Item	PHR1469	H3660	74347
USP 1324002 Hydroquinone	Supelco PHR1469 Hydroquinone	Sigma-Aldrich H3660 Hydroquinone	Supelco 74347 Hydroquinone
manufacturer/tradename USP	manufacturer/tradename -	manufacturer/tradename -	manufacturer/tradename Manufactured by: Sigma-Aldrich Production GmbH, Switzerland
grade pharmaceutical primary standard	grade certified reference material, pharmaceutical secondary standard	grade -	grade certified reference material, TraceCERT^®
application(s) pharmaceutical (small molecule)	application(s) pharmaceutical (small molecule)	application(s) pharmaceutical (small molecule)	application(s) cleaning products cosmetics food and beverages personal care
format neat	format neat	format -	format neat
bp 285 °C (lit.)	bp 285 °C (lit.)	bp 285 °C (lit.)	bp 285 °C (lit.)
vapor density 3.81 (vs air)	vapor density 3.81 (vs air)	vapor density 3.81 (vs air)	vapor density 3.81 (vs air)

Still not finding the right product?

Explore all of our products under Hydroquinone

pictograms

GHS08,GHS05,GHS07,GHS09

signalword

Danger

hcodes

H302,H317,H318,H341,H351,H410

pcodes

P273 - P280 - P301 + P312 - P302 + P352 - P305 + P351 + P338 - P308 + P313

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

flash_point_f

329.0 °F - closed cup

flash_point_c

165 °C - closed cup

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number

It looks like we've run into a problem, but you can still download Certificates of Analysis from our Documents section.

If you need assistance, please contact Customer Support

Already Own This Product?

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

Visit the Document Library

The toxicology of hydroquinone--relevance to occupational and environmental exposure.

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

ASCORBATE PEROXIDASE6 protects Arabidopsis desiccating and germinating seeds from stress and mediates cross talk between reactive oxygen species, abscisic acid, and auxin.

Changming Chen et al.

Plant physiology, 166(1), 370-383 (2014-07-23)

A seed's ability to properly germinate largely depends on its oxidative poise. The level of reactive oxygen species (ROS) in Arabidopsis (Arabidopsis thaliana) is controlled by a large gene network, which includes the gene coding for the hydrogen peroxide-scavenging enzyme

Hydroquinone: an evaluation of the human risks from its carcinogenic and mutagenic properties.

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

View All Related Papers

Global Trade Item Number

SKU	GTIN
SAB2102716-100UL	04061836173128
SAB2102716-50UG	04061833350652
AV32741-100UL	04061836180492
1324002-500MG	04061838728982

Questions

Reviews

No rating value