Hydroquinone
Properties
- Molecular formula
- C6H6O2
- Molar mass
- 110.11 g/mol
- Exact mass
- 110.0368 Da
- Density
- 1.33 g/mL
- Melting point
- 170–171 °C
- Boiling point
- 285–287 °C
- pKa
- 9.96, 10.85 (25 °C)
- Flash point
- 165 °C (closed cup)
- Water solubility
- 72 g/L (25 °C)
- logP
- 1.10Crippen estimate
- Polar surface area
- 40.5 Ų
- H-bond donors / acceptors
- 2 / 2
- Rotatable bonds
- 0
Hazards
Danger
- H302 Harmful if swallowedAcute toxicity, oral
- H317 May cause an allergic skin reactionSensitization, Skin
- H318 Causes serious eye damageSerious eye damage/eye irritation
- H341 Suspected of causing genetic defectsGerm cell mutagenicity
- H351 Suspected of causing cancerCarcinogenicity
- H400 Very toxic to aquatic lifeHazardous to the aquatic environment, acute hazard
Harmonised EU classification (CLP Annex VI, index 604-005-00-4), via PubChem.
Precautionary statements
P203, P261, P264, P264+P265, P270, P272, P273, P280, P301+P317, P302+P352, P305+P354+P338, P317, P318, P321, P330, P333+P317, P362+P364, P391, P405, P501
Identifiers
CAS number
123-31-9SMILES
Oc1ccc(O)cc1InChIKey
QIGBRXMKCJKVMJ-UHFFFAOYSA-NInChI
InChI=1S/C6H6O2/c7-5-1-2-6(8)4-3-5/h1-4,7-8HWeigh it out
Type any one amount. The others follow from the molar mass and density.
Names and synonyms
37 names · show all
- 1,4-Benzenediol
- Arctuvin
- p-Benzenediol
- Benzohydroquinone
- Benzoquinol
- p-Dihydroxybenzene
- Eldoquin
- Hydroquinol
- Quinol
- Tecquinol
- Tenox HQ
- p-Dioxybenzene
- p-Hydroquinone
- 1,4-Dihydroxybenzene
- p-Hydroxyphenol
- HE 5
- Diak 5
- Eldopaque
- Phiaquin
- 4-Hydroxyphenol
- Dihydroquinone
- p-Quinol
- BQ(H)
- p-Dihydroquinone
- 1,4-Benzoquinol
- p-Phenylenediol
- Eldoquin forte
- Solaquin forte
- Black & white bleaching cream
- Eldopacque
- Aida
- Eldopaque forte
- NSC 9247
- Solution Q
- 1,4-p-Benzenediol
- 1,4-Phenylenediol
- 1,4-Benzenediol (hydroquinone)
Safety data sheets
One stored sheet lists this compound in section 3, matched by the CAS number 123-31-9. Each row opens the sheet with its composition and PDF.
Work with Hydroquinone
Predict the NMR spectrum1H and 13C shifts with multiplicities
Make a solutionWhat to weigh for any molarity and volume
Check drug-likenessLipinski, Veber and lead-likeness
Boiling point under vacuumAt any pressure, from its normal boiling point
Isotope patternExact mass and the mass spectrum pattern
Similar compounds
4,4′-Dihydroxybiphenyl92-88-675 % similar
4-Bromophenol106-41-264 % similar
Benzophenol108-95-262 % similar
P-Cresol106-44-560 % similar
4-Chlorophenol106-48-960 % similar
Tetrakis(4-hydroxyphenyl)ethylene119301-59-660 % similar
4-Aminophenol123-30-860 % similar
Bis(4-hydroxyphenyl)disulfide15015-57-360 % similar
Tanimoto similarity of circular fingerprints over the whole catalogue.