1.04610

Hydroquinone

Technipur^®

• Synonym(s): 1,4-Benzenediol, 1,4-Dihydroxybenzene, 4-Hydroxyphenol, p-Benzenediol, p-Dihydroxybenzene, p-Hydroquinone, p-Hydroxyphenol, Benzoquinol, Quinol, HQ
• Linear Formula: C₆H₄-1,4-(OH)₂
• CAS Number: 123-31-9
• Molecular Weight: 110.11
• NACRES: NA.22
• UNSPSC Code: 41116107
• Beilstein/REAXYS Number: 605970
• MDL number: MFCD00002339

Properties

• vapor density: 3.81 (vs air)
• Quality Segment: 200
• vapor pressure: 1 mmHg ( 132 °C)
• autoignition temp.: 930 °F
• bp: 285 °C (lit.)
• mp: 172-175 °C (lit.)
• density: 1.358 g/cm³ at 20 °C
• 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

Application

Hydroquinone can be used as:

• A reducing agent in the preparation of silver sols, gold nanoparticles and nanorods for material science applications.(1)(2)(3)
• A polymerization inhibitor in the synthesis of industrially important 4-vinylphenols via decarboxylation of 4-hydroxycinnamic acids.(4)
• A phase change material (PCM) applicable in solar cooling refrigeration technology.(5)

Legal Information

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

Safety Information

• Pictograms: GHS08,GHS05,GHS07,GHS09
• Signal Word: Danger
• Hazard Codes: 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: 11 - Combustible Solids
• WGK: WGK 3
• Flash Point (°F): 329.0 °F - closed cup
• Flash Point (°C): 165 °C - closed cup