Molekula
p-Benzoquinone
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
p-Benzoquinone is a quinone compound used in organic synthesis, as a polymerization inhibitor, and in photographic chemicals. It appears as a yellow crystalline solid and is moderately toxic. CAS: 106-51-4, Molecular formula: C6H4O2, Molecular weight: 108.09 g/mol. Store at ambient temperature. Signal word: Danger. Molekula supplies p-Benzoquinone from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
In stock — same-day dispatch
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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100 g — £30.90 per pack ex VAT · £37.08 inc. VAT
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1 kg — £124.50 per pack ex VAT · £149.40 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Yellow/brown powder |
| Melting Point | 112 - 116 Deg C |
| Water | <0.5% |
| Ash | <0.05% |
| Assay | Min99% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | 77 °C |
| Transport Class | 6.1 |
| Packing Group | II |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Greenish-yellowish solid |
| Odour | Penetrating odor resembling that of chlorine |
| Melting Point | 116 °C |
| Vapour Pressure | 12 Pa at 20 °C |
| log P (octanol/water) | 0.20 |
Source: PubChem CID 4650 (HSDB, ICSC)
Identification
| Property | Value |
|---|---|
| SKU | 34818722 |
| CAS Number | 106-51-4 |
| IUPAC Name | cyclohexa-2,5-diene-1,4-dione |
| EC Number | 203-405-2 |
| Molecular Formula | C6H4O2 |
| Molecular Weight | 108.09 |
| Exact Mass | 108.0211 |
| SMILES | C1=CC(=O)C=CC1=O |
| InChIKey | AZQWKYJCGOJGHM-UHFFFAOYSA-N |
| InChI | InChI=1S/C6H4O2/c7-5-1-2-6(8)4-3-5/h1-4H |
| PubChem CID | 4650 |
| UN Number | UN2587 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29146990 |
| Tariff Code | 2914698040 |
Safety & GHS
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Flammable
GHS02
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Toxic
GHS06
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Serious Health Hazard
GHS08
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Hazardous to the Environment
GHS09
Hazard statements
- H228 Flammable solid
- H301 + H331 Toxic if swallowed or inhaled
- H314 (sub cat. 1B) Causes severe skin burns and eye damage
- H335 May cause respiratory irritation
- H341 Suspected of causing genetic defects
- H410 Very toxic to aquatic life with long lasting effects
Precautionary statements
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P263 Avoid contact during pregnancy/while nursing
- P273 Avoid release to the environment
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Quality certificates
Molekula Group is certified to ISO 9001:2015 (quality) and ISO 14001:2015 (environmental management), audited by a UKAS-accredited body. Both certificates are valid to 17 May 2028.
Synonyms
- 1,4-Benzoquine
- 2,5-Cyclohexadiene-1,4-dione
- Benzoquinone
- Chinone
- cyclohexa-2,5-diene-1,4-dione
- Cyclohexadienedione
- p-Quinone
- para-Benzoquinone
- para-Quinone
- Quinone
Frequently asked questions
What is p-Benzoquinone used for?
p-Benzoquinone is used as an oxidizing agent in organic synthesis and as a precursor in the production of other chemicals, including pharmaceuticals and polymers.
What is the chemical formula and molecular weight of p-Benzoquinone?
The chemical formula is C6H4O2 and the molecular weight is 108.09 g/mol.
How should p-Benzoquinone be stored?
p-Benzoquinone should be stored at ambient temperature, protected from light and moisture.
What grade is available for p-Benzoquinone?
Molekula supplies p-Benzoquinone in technical grade; custom grades may be available upon request.
Can Molekula supply p-Benzoquinone in bulk?
Yes, Molekula can supply p-Benzoquinone in bulk quantities; please contact sales for pricing and availability.
What documentation comes with a purchase of p-Benzoquinone?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS); additional documentation can be provided upon request.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.