H17902

Hydroquinone

ReagentPlus^®, 99%

• Synonym(s): 1,4-Benzenediol, 1,4-Dihydroxybenzene, HQ
• Linear Formula: C₆H₄-1,4-(OH)₂
• CAS Number: 123-31-9
• Molecular Weight: 110.11
• Beilstein: 605970
• EC Number: 204-617-8
• MDL number: MFCD00002339
• UNSPSC Code: 12352100
• PubChem Substance ID: 24895484
• NACRES: NA.21

Properties

• vapor density: 3.81 (vs air)
• Quality Level: 200
• vapor pressure: 1 mmHg ( 132 °C)
• product line: ReagentPlus^®
• Assay: 99%
• autoignition temp.: 930 °F
• impurities: ≤0.6% water (Karl Fischer)
• bp: 285 °C (lit.)
• mp: 171-175 °C; 172-175 °C (lit.)
• SMILES string: Oc1ccc(O)cc1
• InChI: 1S/C6H6O2/c7-5-1-2-6(8)4-3-5/h1-4,7-8H
• InChI key: QIGBRXMKCJKVMJ-UHFFFAOYSA-N

Description

General description

Hydroquinone (HQ), a phenolic compound, is also known as 1,4-dihydroxy-benzene. The detection of HQ along with resorcinol and phenol in air samples by synchronous fluorescence method has been proposed. The electrochemical oxidation of HQ has been studied using cyclic and differential pulse voltammetry. Its enthalpies of sublimation, vaporization and fusion have been reported.

Application

Hydroquinone may be used to synthesize bicyclic phosphonate derivative by reacting with phosphonic dichloride.

Legal Information

ReagentPlus is a registered trademark of Merck KGaA, Darmstadt, Germany

Safety Information

• Pictograms: GHS08,GHS05,GHS07,GHS09
• Signal Word: Danger
• Hazard Statements: H302,H317,H318,H341,H351,H410
• Precautionary Statements: P273 - P280 - P301 + P312 - P302 + P352 - P305 + P351 + P338 - P308 + P313
• Hazard Classifications: Acute Tox. 4 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Carc. 2 - Eye Dam. 1 - Muta. 2 - Skin Sens. 1B
• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 3
• Flash Point(F): 329.0 °F - closed cup
• Flash Point(C): 165 °C - closed cup
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves