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1,4-Benzoquinone CAS#106-51-4

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  • 1,4-Benzoquinone CAS#106-51-4
  • 1,4-Benzoquinone CAS#106-51-4
  • 1,4-Benzoquinone CAS#106-51-4
  • 1,4-Benzoquinone CAS#106-51-4
  • 1,4-Benzoquinone CAS#106-51-4

›

1,4-Benzoquinone CAS#106-51-4

Versatile Chemical Intermediate：Widely used in the production of hydroquinone, rubber accelerators, oxidizing agents, and other chemicals.


Polymerization Inhibitor：Effective in preventing unwanted polymerization in chemical processes.


Broad Industrial Applications：Utilized in the dye, textile, tanning, cosmetic, and photographic industries.


Oxidizing Agent：Serves as a reliable oxidizing agent in various chemical reactions and laboratory applications.


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Product Description

Product Description of ‌1,4-Benzoquinone CAS#106-51-4

p-Benzoquinone is a yellow monoclinic crystal with a strong chlorine-like odor. It is commonly used as a chemical intermediate, polymerization inhibitor, oxidant, photographic chemical and tanning agent. It was first commercially produced in 1919 and later manufactured in many European countries. It is mainly applied to the production of hydroquinone, and also used as an intermediate for rubber accelerators and other chemical products. It is widely used in dye, textile, chemical, tanning and cosmetic industries, as well as in chemical synthesis, production processes and laboratory research. Occupational inhalation exposure may happen in industrial environments and from tobacco smoke.


Product Application of 1,4-Benzoquinone CAS#106-51-4

p-Benzoquinone is used as a dienophile in Diels-Alder cycloadditions to synthesize naphthoquinones and 1,4-phenanthrenediones. It acts as a dehydrogenation reagent and oxidizing agent in organic synthesis. In the Thiele-Winter reaction, it reacts with acetic anhydride and sulfuric acid to prepare hydroxyquinol triacetate. It is also applied in bromadol synthesis and inhibits double-bond migration during olefin metathesis. Additionally, p-Benzoquinone is a raw material for making hydroquinone which is widely used in photography, and it works as a reducing agent and antioxidant in rubber manufacturing.

Product Information

Parameters


Melting point113-115 °C(lit.)
Boiling point293°C
bulk density700kg/m3
density1.31
vapor density3.73 (vs air)
vapor pressure0.1 mm Hg ( 25 °C)
refractive indexn20/D 1.453
Fp38°C
storage temp.room temp
solubility10g/l
pka7.7
formPowder
colorYellow to green
Odorirritant odor
PH4 (1g/l, H2O, 20℃)
biological sourcesynthetic
Water Solubility10 g/L (25 ºC)
Merck148074
BRN773967
Exposure limitsTLV-TWA 0.4 mg/m3 (0.1 ppm); STEL 1.2 mg/m3 (0.3 ppm) (ACGIH); IDLH 75 ppm (NIOSH).
Stability:Stable, but light sensitive. Incompatible with strong oxidizing agents. Flammable.
InChI1S/C6H4O2/c7-5-1-2-6(8)4-3-5/h1-4H
InChIKeyAZQWKYJCGOJGHM-UHFFFAOYSA-N
SMILESO=C1C=CC(=O)C=C1
LogP0.1-0.3 at 23℃ and pH4.8-5.3
CAS DataBase Reference106-51-4(CAS DataBase Reference)
NIST Chemistry Referencep-Benzoquinone(106-51-4)
IARC3 (Vol. 15, Sup 7, 71) 1999
EPA Substance Registry SystemQuinone (106-51-4)


Safety Information


Hazard CodesT,N,Xn,F
Risk Statements23/25-36/37/38-50-20/21/22-11
Safety Statements26-28-45-61-28A-23-16
RIDADRUN 2587 6.1/PG 2
OEBC
OELTWA: 0.4 mg/m3 (0.1 ppm)
WGK Germany3
RTECSDK2625000
F8
Autoignition Temperature815 °F
TSCATSCA listed
HS Code2914 69 80
HazardClass6.1
PackingGroupII
Storage Class4.1B - Flammable solid hazardous materials
Hazard ClassificationsAcute 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
Hazardous Substances Data106-51-4(Hazardous Substances Data)
ToxicityLD50 orally in rats: 130 mg/kg (Woodard)
IDLA100 mg/m3


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