1056504

1,4-Benzoquinone

United States Pharmacopeia (USP) Reference Standard

• Synonym(s): p-Benzoquinone, ,5-Cyclohexadiene-1,4-dione, Quinone
• Linear Formula: C₆H₄(=O)₂
• CAS Number: 106-51-4
• Molecular Weight: 108.09
• UNSPSC Code: 41116107
• NACRES: NA.24
• PubChem Substance ID: 329748905
• MDL number: MFCD00001591
• Beilstein/REAXYS Number: 773967

Properties

• grade: pharmaceutical primary standard
• agency: USP
• vapor density: 3.73 (vs air)
• vapor pressure: 0.1 mmHg ( 25 °C)
• autoignition temp.: 815 °F
• manufacturer/tradename: USP
• mp: 113-115 °C (lit.)
• application(s): pharmaceutical (small molecule)
• format: neat
• SMILES string: O=C1C=CC(=O)C=C1
• InChI: 1S/C6H4O2/c7-5-1-2-6(8)4-3-5/h1-4H
• InChI key: AZQWKYJCGOJGHM-UHFFFAOYSA-N

Description

General description

1,4-Benzoquinone, also known as para-quinone, is a benzene derivative with cyclic dienedione structure.

This product is provided as delivered and specified by the issuing Pharmacopoeia. All information provided in support of this product, including SDS and any product information leaflets, have been developed and issued under the Authority of the issuing Pharmacopoeia.

1,4-Benzoquinone is a dark yellow powder having a green cast. It is slightly soluble in water and soluble in alcohol, in ether, and in fixed alkali solutions. It may darken on standing.
Find answers to frequently asked questions on USP products in USP FAQs.

Application

The USP pharmaceutical reference standard is intended for use in analytical or laboratory applications as specified in USP compendia.

Also ideal for use as a primary reference standard in the following tests or assays according to USP General Chapter <11>:

• pure steam
• water for injection
• sterile water for inhalation
• sterile water for injection
• sterile water for irrigation
• purified water
• sterile purified water
• water for hemodialysis
• <643>total organic carbon

Analysis Note

These products are for test and assay use only. They are not meant for administration to humans or animals and cannot be used to diagnose, treat, or cure diseases of any kind.  ​

Other Notes

Sales restrictions may apply.

Safety Information

• pictograms: GHS02,GHS06,GHS08,GHS05,GHS09
• signalword: Danger
• hcodes: H228,H301 + H331,H314,H317,H335,H341,H410
• pcodes: P210 - P260 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• Hazard Classifications: Acute 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
• target_organs: Respiratory system
• Storage Class: 4.1B - Flammable solid hazardous materials
• flash_point_f: 170.6 °F - closed cup
• flash_point_c: 77 °C - closed cup