p-Benzoquinone
SIAL/B10358 - reagent grade, ≥98%
Synonym: Quinone
CAS Number: 106-51-4
Empirical Formula (Hill Notation): C6H4O2
Molecular Weight: 108.09
EC Number: 203-405-2
MDL Number: MFCD00001591
Linear Formula: C6H4(=O)2
Product Type: Chemical
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: B10358-1KG
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: B10358-500G
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: B10358-100G
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: B10358-5G
12 Principles of Green Chemistry: Principle 9—Catalytic reagents (as selective as possible) are superior to stoichiometric reagents.
| assay | ≥98% |
| autoignition temp. | 815 °F |
| biological source | synthetic |
| form | powder or crystals |
| grade | reagent grade |
| greener alternative category |  |
| greener alternative product characteristics | Catalysis Learn more about the Principles of Green Chemistry . |
| InChI | 1S/C6H4O2/c7-5-1-2-6(8)4- |
| InChI key | AZQWKYJCGOJGHM-UHFFFAOYSA |
| mp | 113-115 °C (lit.) |
| Quality Level | 200 |
| SMILES string | O=C1C=CC(=O)C=C1 |
| solubility | water: soluble 14.7 g/L at 20 °C |
| storage temp. | room temp |
| sustainability | Greener Alternative Product |
| vapor density | 3.73 (vs air) |
| vapor pressure | 0.1 mmHg ( 25 °C) |
| Application: | p-Benzoquinone may be used to form benzofuranone derivatives on reacting with anilides of β-aminocrotonic acids via Nenitzescu reaction. |
| Application: | Dienophile employed in Diels-Alder cycloadditions to form naphthoquinones, and 1,4-phenanthrenediones. |
| Application: | Oxidant used in first step of greener amine synthesis from terminal olefins by Wacker oxidation followed by transfer hydrogenation of the resultant imine. Formal anti-Markovnikov hydroamination of terminal olefins  |
| General description: | p-Benzoquinone (PBQ) is a cyclic conjugated diketone. Its high-resolution photoelectron spectrum has been reported. The visible and near ultraviolet spectra of PBQ have been recorded and analyzed. Its addition as coagent has been reported to enhance the crosslinking rate of polypropylene initiated by the pyrolysis of peroxides. Its impact on hemoglobin (Hb) has been investigated based on immunoblots and mass spectral analysis of a smoker′s blood. |
| General description: | Free radical inhibitor |
| General description: | We are committed to bringing you Greener Alternative Products, which adhere to one or more of The 12 Principles of Greener Chemistry. This product has been enhanced for catalytic efficiency. Click here for more information. |
| Packaging: | 1 kg in glass bottle |
| Packaging: | 5, 100, 500 g in glass bottle |
| Symbol |      GHS02,GHS05,GHS06,GHS08,GHS09 |
| Signal word | Danger |
| Hazard statements | H228 - H301 + H331 - H314 - H317 - H335 - H341 - H410 |
| Precautionary statements | P210 - P260 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338 |
| Hazard Codes | T,N |
| Risk Statements | 23/25-36/37/38-50 |
| Safety Statements | 26-28-45-61 |
| RIDADR | UN 2587 6.1 / PGII |
| WGK Germany | WGK 3 |
| Flash Point(F) | 170.6 °F - closed cup |
| Flash Point(C) | 77 °C - closed cup |
| Purity | ≥98% |
| mp | 113-115 °C (lit.) |
| Storage Temp. | room temp |
| UNSPSC | 12352005 |