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8.22333

Hydroquinone

for synthesis

Synonym(s):

Hydroquinone, 1,4-Dihydroxybenzene, Quinol

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About This Item

Linear Formula:
C6H4(OH)2
CAS Number:
Molecular Weight:
110.11
UNSPSC Code:
12352104
EC Index Number:
204-617-8
NACRES:
NA.22
MDL number:
Assay:
≥99.5% (GC)
Grade:
synthesis grade
Bp:
287 °C/1013 hPa
Vapor pressure:
<0.1 hPa ( 25 °C)
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grade

synthesis grade

Quality Level

vapor pressure

<0.1 hPa ( 25 °C)

assay

≥99.5% (GC)

form

solid

autoignition temp.

515 °C

potency

302 mg/kg LD50, oral (Rat)

reaction suitability

reagent type: reductant

dilution

(for synthesis)

bp

287 °C/1013 hPa

mp

172 °C (decomposition)

transition temp

flash point 165 °C

solubility

70 g/L

density

1.358 g/cm3 at 20 °C

bulk density

600 kg/m3

storage temp.

2-30°C

SMILES string

Oc1ccc(cc1)O

InChI

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

InChI key

QIGBRXMKCJKVMJ-UHFFFAOYSA-N

Application

Hydroquinone can be used as a reducing agent:
  • To synthesize metal nanoparticles by reduction of metal salt precursors.[1]
  • For the reduction of aryldiazonium salt intermediates to aromatic compounds.
  • In combination with ethylenediaminetetraacetic acid (EDTA) to prepare urchin-like gold nanoparticles via a one-pot seedless growth process.


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This Item
PHR146974347H9003
Quality Level

200

Quality Level

300

Quality Level

300

Quality Level

200

assay

≥99.5% (GC)

assay

-

assay

-

assay

≥99%

grade

synthesis grade

grade

certified reference material, pharmaceutical secondary standard

grade

certified reference material, TraceCERT®

grade

-

solubility

70 g/L

solubility

-

solubility

-

solubility

water: 50 mg/mL, clear

form

solid

form

-

form

-

form

powder

autoignition temp.

515 °C

autoignition temp.

930 °F

autoignition temp.

930 °F

autoignition temp.

930 °F


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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

flash_point_c

165 °C - closed cup



Certificates of Analysis (COA)

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Hydroquinone as a reducing agent for conversion of aryldiazonium salts into arenes
McDonald RN and Richmond JM
Journal of the Chemical Society. Chemical Communications, (17), 605-606 (1973)
Facile synthesis of urchin-like gold nanoparticles using binary reducing agent composed of EDTA and hydroquinone
Nhat Hang NT and Phuong Phong NT
Vietnam Journal of Chemistry, 56(6), 667-671 (2018)
Stuart T Gentry et al.
Langmuir : the ACS journal of surfaces and colloids, 25(5), 2613-2621 (2009-05-14)
Hydroquinone (HQ) was used as the principal chemical reducing agent to prepare aqueous silver nanocolloids from silver nitrate. The data demonstrate that HQ is unable to initiate the particle growth process on its own, but is able to sustain particle



Global Trade Item Number

SKUGTIN
822333000004022536489506
822333025004022536489513
822333250104022536765822
822333100004022536489520
822333902504022536489537

Questions

1–2 of 2 Questions  
  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdf

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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