C6H4O2
108.09 g/mol
Industrial ChemicalDanger
P-benzoquinone
CAS106-51-4EC203-405-2
Category
Industrial Chemical
Compound Class
Other
Primary Use
chemical intermediate and oxidizing agent
p-Benzoquinone is a chemical compound widely used as an oxidizing agent and chemical intermediate in industrial processes. It plays a key role in the production of hydroquinone, dyes, and fungicides, and is also employed as a polymerization inhibitor and photographic chemical.
chemical intermediate in the production of hydroquinone, dyes, and fungicidesoxidizing agentpolymerization inhibitor
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Related Compounds
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Chemical intermediate for synthesis
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solvent for fruit flavors
Referencestereoisomer of
P-Benzoquinone-d4
CAS2237-14-1
research compound
Referencesame scaffold
Chloranil
CAS118-75-2
chemical intermediate and laboratory reagent
Referencesame scaffold
Tetroquinone disodium
CAS1887-02-1
Industrial chemical intermediate
Referencesame scaffold
2,6-diisopropylbenzoquinone
CAS1988-11-0
benzoquinone derivative for chemical synthesis
Safety Reference
Danger
H301Toxic if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H331Toxic if inhaled
H335May cause respiratory irritation
H400Very toxic to aquatic life
H317May cause an allergic skin reaction
H341Suspected of causing genetic defects
H410Very toxic to aquatic life with long lasting effects
H370Causes damage to organs
H371May cause damage to organs
Regulatory Compliance1
- CN Catalogue of Hazardous ChemicalsCNRegulation
Customs Tariff Classification
The international HS code for P-benzoquinone (CAS 106-51-4) is 2914.69.
HS code (international, 6-digit)
2914.69
EU CN code (8-digit)
2914 69 80
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
cyclohexa-2,5-diene-1,4-dione
InChIKey
AZQWKYJCGOJGHM-UHFFFAOYSA-N
SMILES
C1=CC(=O)C=CC1=O
Synonyms (50)
- 1,4-Benzoquinone, United States Pharmacopeia (USP)
- 1,4-Benzoquinone, pharmaceutical secondary standard; traceable to USP
- 1,4-BENZOQUINONE
- 1,4-Benzochinon
- 1,4-Benzoquine
- 1,4-Benzoquinone; SKF-21232
- 1,4-Cyclohexadiene dioxide
- 1,4-Cyclohexadienedione
- 1,4-Cyclohexanedienedione
- 1,4-Diossibenzene
- 1,4-Diossibenzene [Italian]
- 1,4-Dioxy-benzol
- 1,4-Dioxy-benzol [German]
- 1,4-Dioxybenzene
- 2,4-dione
- 2,5-CYCLOHEXANDIEN-1,4-DIONE
- 2,5-Cyclohexadiene-1,4-dione
- Benzo-1,4-quinone
- Benzo-chinon
- Benzo-chinon [German]
- Benzoquinone
- Caswell No. 719C
- Chinon
- Chinon [Dutch, German]
- Chinone
- Cyclohexadiene-1,4-dione
- Cyclohexadienedione
- PBQ 2
- Quinone
- Quinone1,4-Benzoquinone
- Quinone; p-BQ
- Semiquinone anion
- Steara pbq
- USAF P-220
- cyclohexa-2,5-diene-1,4-dione
- p-BQ
- p-Benzoquinone, reagent grade
- p-Chinon
- p-Chinon [German]
- p-Quinone
- p-benzoquinone
- para-Benzoquinone
- para-Quinone
- parabenzochinon
- semiquinone radicals
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