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.[1] The detection of HQ along with resorcinol and phenol in air samples by synchronous fluorescence method has been proposed.[2] The electrochemical oxidation of HQ has been studied using cyclic and differential pulse voltammetry.[3] Its enthalpies of sublimation, vaporization and fusion have been reported.[4]

Application

Hydroquinone may be used to synthesize bicyclic phosphonate derivative by reacting with phosphonic dichloride.[5]

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