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8.02410

p-Benzoquinone

for synthesis

Synonym(s):

p-Benzoquinone, p-Quinone, 1,4-Benzoquinone, 1,4-Cyclohexadiene-3,6-dione

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100 g
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$45.60
1 kg
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$210.00
25 kg
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$4,380.00
50 kg
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$8,510.00

About This Item

Empirical Formula (Hill Notation):
C6H4O2
CAS Number:
106-51-4
Molecular Weight:
108.09
UNSPSC Code:
12352115
EC Index Number:
203-405-2
NACRES:
NA.22
MDL number:
MFCD00001591

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vapor pressure

0.12 hPa ( 20 °C)

Quality Level

200

form

solid

autoignition temp.

560 °C

potency

130 mg/kg LD50, oral (Rat)

pH

4 (20 °C, 1 g/L in H2O)

mp

110-113 °C

solubility

10 g/L

density

1.32 g/cm3 at 20 °C

bulk density

700 kg/m3

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This Item
8.029401.04610195464
p-Benzoquinone for synthesis

Sigma-Aldrich

8.02410

p-Benzoquinone

2,3-Dichloro-5,6-dicyano-p-benzoquinone for synthesis

Sigma-Aldrich

8.02940

2,3-Dichloro-5,6-dicyano-p-benzoquinone

Hydroquinone Technipur®

Sigma-Aldrich

1.04610

Hydroquinone

2,5-Dihydroxy-1,4-benzoquinone 98%

Sigma-Aldrich

195464

2,5-Dihydroxy-1,4-benzoquinone

solubility

10 g/L

solubility

-

solubility

-

solubility

-

mp

110-113 °C

mp

209-214 °C

mp

172-175 °C (lit.)

mp

235 °C (dec.) (lit.)

pH

4 (20 °C, 1 g/L in H2O)

pH

-

pH

-

pH

-

autoignition temp.

560 °C

autoignition temp.

-

autoignition temp.

930 °F

autoignition temp.

-

vapor pressure

0.12 hPa ( 20 °C)

vapor pressure

-

vapor pressure

1 mmHg ( 132 °C)

vapor pressure

-

potency

130 mg/kg LD50, oral (Rat)

potency

86 mg/kg LD50, oral (Rat)

potency

-

potency

-

Application

p-Benzoquinone can be used as:
  • A free-radical inhibitor.
  • A catalyst to synthesize highly site-selective N1-alkylated benzotriazoles by N1-alkylation of benzotriazoles with diazo compounds.[1]
  • A hydrogen acceptor and two electron oxidant in Pd-catalyzed Wacker oxidation of aryl olefins aldehydes.[2]
  • A redox mediator in Pd-catalyzed anaerobic electrooxidative homocoupling of aryl-boron derivatives.

signalword

Danger

Hazard Classifications

Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Eye Dam. 1 - Flam. Sol. 1 - Muta. 2 - Skin Corr. 1B - Skin Sens. 1 - STOT SE 3

target_organs

Respiratory system

Storage Class

4.1B - Flammable solid hazardous materials

wgk

WGK 3

flash_point_f

170.6 °F - closed cup

flash_point_c

77 °C - closed cup

Certificates of Analysis (COA)

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Ruthenium-catalyzed carbon-carbon formation to synthesize tetraarylethanes and tetraarylxylylene through dechlorinative dimeric reaction
Li, Yanjun, et al.
Journal of Organometallic Chemistry, 687(1), 12-15 (2003)
Peili Teo et al.
Organic letters, 14(13), 3237-3239 (2012-06-15)
A method for efficient and aldehyde-selective Wacker oxidation of aryl-substituted olefins using PdCl(2)(MeCN)(2), 1,4-benzoquinone, and t-BuOH in air is described. Up to a 96% yield of aldehyde can be obtained, and up to 99% selectivity can be achieved with styrene-related
Pd (OAc) 2/p-Benzoquinone-Catalyzed Anaerobic Electrooxidative Homocoupling of Arylboronic Acids, Arylboronates and Aryltrifluoroborates in DMF and/or Water
Amatore C, et al.
European Journal of Organic Chemistry, 4567-4570 (2008)
Jingya Yang et al.
Organic letters, 22(18), 7284-7289 (2020-09-10)
A visible-light-promoted highly site-selective N1-alkylation of benzotriazoles with diazo compounds has been achieved under mild and metal-free conditions. Using cheap, readily available p-benzoquinone (PBQ) as a catalyst, a wide range of benzotriazoles and diazo compounds are reacted, providing N1-alkylated benzotriazoles

Global Trade Item Number

SKUGTIN
802410502104061839611412
802410100004022536373195
802410050104061839611382
802410012004022536697512
802410010004022536373188
802410902504027269027148
802410500104061839611405
802410052104061839611399
802410905004022536373218

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