14-Benzoquinone CAS# 106-51-4

14-Benzoquinone, Promotion Season Now in Store and Free Sample for Testing with Factory Price
  • Appearance: Yellow crystal
  • Assay: 99.0%min
  • Packaging: 25kg/fiber drum
  • Sample: Available

Quality Control of 14-Benzoquinone

Chemical Structure
Packing of 14-Benzoquinone

Description of 14-Benzoquinone

14-Benzoquinone, commonly known as para-quinone, is a chemical compound with the formula C6H4O2. In a pure state, it forms bright-yellow crystals with a characteristic irritating odor, resembling that of chlorine, bleach, and hot plastic. This six-membered ring compound is the oxidized derivative of 1,4-hydroquinone. The molecule is multifunctional: it exhibits properties of a ketone, forming an oxime; an oxidant, forming the dihydroxy derivative; and an alkene, undergoing addition reactions, especially those typical for α,β-unsaturated ketones. 14-Benzoquinone is sensitive toward both strong mineral acids and alkali, which cause condensation and decomposition of the compound.

Basic Info of 14-Benzoquinone

Basic Info

Chemical Name



2,5-Cyclohexadiene-1,4-dione;p-benozquinone;Thiophene,5-dibromo;2,5-dibromo thiophene;cyclohexadiene-1,4-dione;Expand



Molecular Formula


Molecular Weight







Safety Info



Hazard Class


Safety Statements


HS Code


WGK Germany


Packing Group



UN 2587

Risk Statements

R23/25; R36/37/38; R50

Hazard Codes


Hazard Declaration

H301 + H331; H315; H319; H335; H410

Signal Word


Caution Statement

P261; P273; P301 + P310 + P330; P304 + P340 + P312; P403 + P233; P501


GHS06, GHS09



Appearance & Physical State

yellow to green crystalline solid



Boiling Point


Melting Point


Flash Point


Refractive Index

n20/D 1.453

Water Solubility

10 g/L (25 ºC)


Stable, but light sensitive. Incompatible with strong oxidizing agents. Flammable.

Storage Condition


Vapor Density

3.73 (vs air)

Vapor Pressure

0.1 mm Hg ( 25 °C)


Numbering system

BRN number


RTECS number


MDL number


EINECS number



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What is 14-Benzoquinone?

With the progress of science and technology and the development of society, chemical products have invariably permeated our daily lives, in medicine, food, cosmetics, electronics, industry, and other areas, becoming an essential part of our lives. One such product is 14-Benzoquinone which has developed particularly rapidly in recent years. Do you know about 14-Benzoquinone?


The official answer: P-benzoquinone is an organic compound with the chemical formula C6H4O2.

What’s the application of 14-Benzoquinone?

Yellow crystals. Flammable. Melting point 116℃, relative density 1.318 (20/4℃), soluble in ethanol, ether, and alkali, slightly soluble in water. Can sublimate. Its vapor is volatile and partially decomposed. It has an irritating odor similar to chlorine. Intermediate of dyestuff and medicine. Manufacture of hydroquinone and rubber antioxidant, acrylonitrile and vinyl acetate polymerization initiator and oxidizer, etc. Used in the manufacture of hydroquinone, used as intermediates of dyestuff and medicine, rubber antioxidant, polymerization inhibitor, antioxidant, developer, etc. Used as oxidant, also used in organic synthesis for qualitative determination of parsley bases, pyridine, azomethine, tyrosine, and hydroquinone. It is used in the determination of amino acids in analysis. 99% and Chemicalbook 99.5% high purity grade is used for the photometric determination of amines. Used in Diels-Alder cycloaddition of dienophiles to form naphthoquinones and 1,4-phenanthrenedione Production method dissolves aniline in dilute sulfuric acid, oxidizes it with manganese dioxide, separates and purifies it by steam distillation, crystallizes, dehydrates, and dries it to obtain the finished product. In industrial production, this process is also an intermediate step in the production of hydroquinone. In some occasions, such as reagent production drug manufacturing, it is also used to prepare p-benzoquinone by oxidation with hydroquinone as raw material. Raw material consumption quota: aniline 2000kg/t, sulfuric acid (93%) 8500kg/t, soft manganese ore powder (containing 60-65% manganese) 9500kg/t.


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Hi, I‘m Peter Ni, the founder of Sincere-Chem, I’ve been running a company in China that exporting chemicals, pharmaceuticals, and intermediates for over 70 countries now. And a range of 50,000 products with the best quality and competitive price to meet your different purchasing needs.

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United Kingdom Giles
United Kingdom Giles
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Korea Kim
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Canada Kate
Canada Kate
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I just got the product. The quality is awesome. I’m very happy. Hope to place soon a new order in your company. Also wish for our future business.
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Mexico Gonzalo
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Great service and very supportive. This is my first order and I feel fortunate to be with Peter and his company. Product received was the right good quality product, so my review is more related with the quality, service and shipment. Thank you for sending. next time I will order again. Good supplier...