- InChI
- InChI=1S/C6H6O2/c7-5-1-2-6(8)4-3-5/h1-4,7-8H
- InChI Key
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N
- Formula
- C6H6O2
- SMILES
- Oc1ccc(O)cc1
- Molecular Weight1
- 110.11
- CAS
- 123-31-9
- Other Names
-
- 1,4-Benzenediol
- 1,4-Benzenediol (hydroquinone)
- 1,4-Dihydroxy-benzeen
- 1,4-Dihydroxy-benzol
- 1,4-Dihydroxybenzen
- 1,4-Dihydroxybenzene
- 1,4-Diidrobenzene
- 4-Hydroxyphenol
- Aida
- Arctuvin
- Benzene, p-dihydroxy-
- Benzohydroquinone
- Benzoquinol
- Black & White Bleaching Cream
- Black and White Bleaching Cream
- Derma-Blanch
- Diak 5
- Dihydroquinone
- Eldopacque
- Eldopaque
- Eldopaque forte
- Eldoquin
- Eldoquin forte
- HE 5
- Hidroquinone
- Hydrochinon
- Hydrochinone
- Hydroquinol
- Hydroquinole
- Idrochinone
- NCI-C55834
- Phiaquin
- Quinol
- Solaquin forte
- Tecquinol
- Tenox HQ
- Tequinol
- UN 2662
- USAF EK-356
- p-Benzenediol
- p-Dihydroquinone
- p-Dihydroxybenzene
- p-Dioxobenzene
- p-Dioxybenzene
- p-Hydroquinone
- p-Hydroxyphenol
- p-quinol
- ΔcH°solid : Standard solid enthalpy of combustion (kJ/mol).
- Cp,gas : Ideal gas heat capacity (J/mol×K).
- Cp,solid : Solid phase heat capacity (J/mol×K).
- η : Dynamic viscosity (Pa×s).
- ΔfG° : Standard Gibbs free energy of formation (kJ/mol).
- ΔfH°gas : Enthalpy of formation at standard conditions (kJ/mol).
- ΔfH°solid : Solid phase enthalpy of formation at standard conditions (kJ/mol).
- ΔfusH° : Enthalpy of fusion at standard conditions (kJ/mol).
- ΔfusH : Enthalpy of fusion at a given temperature (kJ/mol).
- ΔsubH° : Enthalpy of sublimation at standard conditions (kJ/mol).
- ΔsubH : Enthalpy of sublimation at a given temperature (kJ/mol).
- ΔvapH° : Enthalpy of vaporization at standard conditions (kJ/mol).
- ΔvapH : Enthalpy of vaporization at a given temperature (kJ/mol).
- IE : Ionization energy (eV).
- log10WS : Log10 of Water solubility in mol/l.
- logPoct/wat : Octanol/Water partition coefficient.
- McVol : McGowan's characteristic volume (ml/mol).
- Pc : Critical Pressure (kPa).
- Psub : Sublimation pressure (kPa).
- ρl : Liquid Density (kg/m3).
- ρs : Solid Density (kg/m3).
- Inp : Non-polar retention indices.
- I : Polar retention indices.
- ΔfusS : Entropy of fusion at a given temperature (J/mol×K).
- S°gas : Molar entropy at standard conditions (J/mol×K).
- Tboil : Normal Boiling Point Temperature (K).
- Tboilr : Boiling point at reduced pressure (K).
- Tc : Critical Temperature (K).
- Tfus : Normal melting (fusion) point (K).
- Ttriple : Triple Point Temperature (K).
- Vc : Critical Volume (m3/kmol).
- 1: Molecular weight from the IUPAC atomic weights tables.
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Physical Properties
| Property | Value | Unit | Source |
|---|---|---|---|
| ΔcH°solid | [-2865.00; -2824.68] | kJ/mol |
|
| ΔcH°solid | -2847.50 ± 1.20 | kJ/mol | NIST |
| ΔcH°solid | Outlier -2824.68 | kJ/mol | NIST |
| ΔcH°solid | -2852.40 ± 0.88 | kJ/mol | NIST |
| ΔcH°solid | -2855.60 | kJ/mol | NIST |
| ΔcH°solid | -2858.00 | kJ/mol | NIST |
| ΔcH°solid | -2865.00 | kJ/mol | NIST |
| ΔcH°solid | -2856.00 | kJ/mol | NIST |
| ΔcH°solid | -2861.00 | kJ/mol | NIST |
| ΔfG° | -187.56 | kJ/mol | Joback Calculated Property |
| ΔfH°gas | [-277.00; -266.90] | kJ/mol |
|
| ΔfH°gas | -277.00 ± 1.40 | kJ/mol | NIST |
| ΔfH°gas | -272.00 | kJ/mol | NIST |
| ΔfH°gas | -268.90 | kJ/mol | NIST |
| ΔfH°gas | -266.90 | kJ/mol | NIST |
| ΔfH°gas | -268.40 | kJ/mol | NIST |
| ΔfH°solid | [-371.10; -361.00] | kJ/mol |
|
| ΔfH°solid | -371.10 ± 1.30 | kJ/mol | NIST |
| ΔfH°solid | -366.10 ± 1.20 | kJ/mol | NIST |
| ΔfH°solid | -363.00 ± 1.00 | kJ/mol | NIST |
| ΔfH°solid | -361.00 | kJ/mol | NIST |
| ΔfH°solid | -362.50 | kJ/mol | NIST |
| ΔfusH° | [23.78; 27.23] | kJ/mol |
|
| ΔfusH° | 27.23 | kJ/mol | Di-Hydr... |
| ΔfusH° | 23.78 | kJ/mol | Measure... |
| ΔsubH° | [94.10; 103.76] | kJ/mol |
|
| ΔsubH° | 94.13 ± 0.53 | kJ/mol | NIST |
| ΔsubH° | 94.10 | kJ/mol | NIST |
| ΔsubH° | 94.10 ± 0.50 | kJ/mol | NIST |
| ΔsubH° | 99.20 ± 1.70 | kJ/mol | NIST |
| ΔsubH° | 103.76 | kJ/mol | NIST |
| ΔvapH° | 84.40 ± 0.70 | kJ/mol | NIST |
| IE | [7.93; 8.44] | eV |
|
| IE | 7.94 ± 0.01 | eV | NIST |
| IE | 7.93 ± 0.01 | eV | NIST |
| IE | 7.95 ± 0.05 | eV | NIST |
| IE | 7.95 ± 0.03 | eV | NIST |
| IE | 8.44 | eV | NIST |
| log10WS | [-0.17; -0.17] |
|
|
| log10WS | -0.17 | Aq. Sol... | |
| log10WS | -0.17 | Estimat... | |
| logPoct/wat | 1.098 | Crippen Calculated Property | |
| McVol | 83.380 | ml/mol | McGowan Calculated Property |
| Pc | 7561.44 | kPa | Joback Calculated Property |
| Inp | [207.49; 1334.00] |
|
|
| Inp | 1327.00 | NIST | |
| Inp | 1334.00 | NIST | |
| Inp | 1241.00 | NIST | |
| Inp | 1334.00 | NIST | |
| Inp | 220.60 | NIST | |
| Inp | 207.49 | NIST | |
| Inp | 220.60 | NIST | |
| Inp | 1334.00 | NIST | |
| Inp | 1241.00 | NIST | |
| Inp | 1327.00 | NIST | |
| I | [2693.00; 2693.00] |
|
|
| I | 2693.00 | NIST | |
| I | 2693.00 | NIST | |
| I | 2693.00 | NIST | |
| S°gas | 343.10 ± 5.00 | J/mol×K | NIST |
| Tboil | [558.20; 558.20] | K |
|
| Tboil | 558.20 | K | NIST |
| Tboil | 558.20 ± 1.00 | K | NIST |
| Tc | 766.85 | K | Joback Calculated Property |
| Tfus | [443.50; 445.35] | K |
|
| Tfus | 445.35 | K | Aq. Sol... |
| Tfus | 445.15 | K | Liquid ... |
| Tfus | 445.00 | K | Enthalp... |
| Tfus | 445.00 ± 0.60 | K | NIST |
| Tfus | 445.00 | K | NIST |
| Tfus | Outlier 443.50 ± 0.30 | K | NIST |
| Ttriple | [445.50; 445.98] | K |
|
| Ttriple | 445.98 ± 0.03 | K | NIST |
| Ttriple | 445.50 ± 0.30 | K | NIST |
| Vc | 0.196 | m3/kmol | Joback Calculated Property |
Temperature Dependent Properties
| Property | Value | Unit | Temperature (K) | Source |
|---|---|---|---|---|
| Cp,gas | [186.33; 226.33] | J/mol×K | [519.62; 766.85] |
|
|
T(K) Ideal gas heat capacity (J/mol×K) 190 200 210 220 230 600 700 | ||||
| Cp,gas | 186.33 | J/mol×K | 519.62 | Joback Calculated Property |
| Cp,gas | 194.85 | J/mol×K | 560.83 | Joback Calculated Property |
| Cp,gas | 202.41 | J/mol×K | 602.03 | Joback Calculated Property |
| Cp,gas | 209.18 | J/mol×K | 643.24 | Joback Calculated Property |
| Cp,gas | 215.32 | J/mol×K | 684.44 | Joback Calculated Property |
| Cp,gas | 220.99 | J/mol×K | 725.65 | Joback Calculated Property |
| Cp,gas | 226.33 | J/mol×K | 766.85 | Joback Calculated Property |
| Cp,solid | [130.50; 150.20] | J/mol×K | [274.30; 323.00] |
|
|
T(K) Solid phase heat capacity (J/mol×K) 130 135 140 145 150 280 300 320 | ||||
| Cp,solid | 130.50 | J/mol×K | 274.30 | NIST |
| Cp,solid | 133.50 | J/mol×K | 297.90 | NIST |
| Cp,solid | 139.70 | J/mol×K | 298.00 | NIST |
| Cp,solid | 131.90 | J/mol×K | 298.15 | NIST |
| Cp,solid | 136.40 | J/mol×K | 298.15 | NIST |
| Cp,solid | 150.20 | J/mol×K | 323.00 | NIST |
| η | [0.0000251; 0.0009603] | Pa×s | [394.72; 519.62] |
|
|
T(K) Dynamic viscosity (Pa×s) 0 2.00e-4 4.00e-4 6.00e-4 8.00e-4 1.00e-3 400 450 500 | ||||
| η | 0.0009603 | Pa×s | 394.72 | Joback Calculated Property |
| η | 0.0004493 | Pa×s | 415.54 | Joback Calculated Property |
| η | 0.0002260 | Pa×s | 436.35 | Joback Calculated Property |
| η | 0.0001210 | Pa×s | 457.17 | Joback Calculated Property |
| η | 0.0000684 | Pa×s | 477.99 | Joback Calculated Property |
| η | 0.0000406 | Pa×s | 498.80 | Joback Calculated Property |
| η | 0.0000251 | Pa×s | 519.62 | Joback Calculated Property |
| ΔfusH | [26.48; 27.23] | kJ/mol | [444.95; 453.00] |
|
|
T(K) Enthalpy of fusion at a given temperature (kJ/mol) 26.6 26.8 27 27.2 446 448 450 452 | ||||
| ΔfusH | 26.50 | kJ/mol | 444.95 | NIST |
| ΔfusH | 27.23 | kJ/mol | 445.10 | NIST |
| ΔfusH | 27.11 | kJ/mol | 445.10 | NIST |
| ΔfusH | 27.11 | kJ/mol | 445.50 | NIST |
| ΔfusH | 26.48 | kJ/mol | 453.00 | NIST |
| ΔsubH | [93.70; 104.00] | kJ/mol | [322.00; 370.50] |
|
|
T(K) Enthalpy of sublimation at a given temperature (kJ/mol) 94 96 98 100 102 104 340 360 | ||||
| ΔsubH | 103.80 | kJ/mol | 322.00 | NIST |
| ΔsubH | 100.60 ± 1.30 | kJ/mol | 332.00 | NIST |
| ΔsubH | 93.70 ± 0.50 | kJ/mol | 334.00 | NIST |
| ΔsubH | 103.80 | kJ/mol | 335.50 | NIST |
| ΔsubH | 104.00 ± 1.00 | kJ/mol | 342.00 | NIST |
| ΔsubH | 99.00 ± 2.00 | kJ/mol | 351.00 | NIST |
| ΔsubH | 101.30 | kJ/mol | 370.50 | NIST |
| ΔvapH | 70.50 | kJ/mol | 503.50 | NIST |
| Psub | [5.13e-05; 3.53e-04] | kPa | [322.80; 339.40] |
|
|
T(K) Sublimation pressure (kPa) 5.00e-5 1.00e-4 1.50e-4 2.00e-4 2.50e-4 3.00e-4 3.50e-4 325 330 335 | ||||
| Psub | 5.56e-05 | kPa | 322.80 | Vapor P... |
| Psub | 5.45e-05 | kPa | 322.80 | Vapor P... |
| Psub | 5.13e-05 | kPa | 322.80 | Vapor P... |
| Psub | 6.59e-05 | kPa | 324.80 | Vapor P... |
| Psub | 7.43e-05 | kPa | 324.90 | Vapor P... |
| Psub | 6.93e-05 | kPa | 324.90 | Vapor P... |
| Psub | 9.44e-05 | kPa | 326.90 | Vapor P... |
| Psub | 8.72e-05 | kPa | 326.90 | Vapor P... |
| Psub | 8.46e-05 | kPa | 326.90 | Vapor P... |
| Psub | 1.13e-04 | kPa | 328.90 | Vapor P... |
| Psub | 1.09e-04 | kPa | 329.00 | Vapor P... |
| Psub | 1.05e-04 | kPa | 329.00 | Vapor P... |
| Psub | 1.38e-04 | kPa | 331.00 | Vapor P... |
| Psub | 1.38e-04 | kPa | 331.00 | Vapor P... |
| Psub | 1.42e-04 | kPa | 331.10 | Vapor P... |
| Psub | 1.77e-04 | kPa | 333.10 | Vapor P... |
| Psub | 1.72e-04 | kPa | 333.20 | Vapor P... |
| Psub | 1.69e-04 | kPa | 333.20 | Vapor P... |
| Psub | 2.32e-04 | kPa | 335.20 | Vapor P... |
| Psub | 2.17e-04 | kPa | 335.20 | Vapor P... |
| Psub | 2.12e-04 | kPa | 335.20 | Vapor P... |
| Psub | 2.62e-04 | kPa | 337.20 | Vapor P... |
| Psub | 2.75e-04 | kPa | 337.30 | Vapor P... |
| Psub | 2.64e-04 | kPa | 337.30 | Vapor P... |
| Psub | 3.53e-04 | kPa | 339.20 | Vapor P... |
| Psub | 3.40e-04 | kPa | 339.40 | Vapor P... |
| Psub | 3.33e-04 | kPa | 339.40 | Vapor P... |
| ρl | 1328.00 | kg/m3 | 293.15 | Measure... |
| ρs | [1332.00; 1338.00] | kg/m3 | [293.20; 298.15] |
|
| ρs | 1332.00 | kg/m3 | 293.20 | Ternary... |
| ρs | 1338.00 | kg/m3 | 298.15 | Liquid ... |
| ΔfusS | [59.00; 60.90] | J/mol×K | [444.95; 445.50] |
|
| ΔfusS | 59.00 | J/mol×K | 444.95 | NIST |
| ΔfusS | 60.90 | J/mol×K | 445.50 | NIST |
Pressure Dependent Properties
| Property | Value | Unit | Pressure (kPa) | Source |
|---|---|---|---|---|
| Tboilr | [558.00; 558.20] | K | [97.30; 97.30] |
|
| Tboilr | 558.20 | K | 97.30 | NIST |
| Tboilr | 558.00 | K | 97.30 | NIST |
Similar Compounds
Find more compounds similar to Hydroquinone.
Mixtures
- Choline chloride + Hydroquinone
- 2-Hexanone + Hydroquinone + Water
- Hydroquinone + Water
- Hydroquinone + Propane, 2-methoxy-2-methyl- + Water
- Hydroquinone + Ethyl Acetate
- Hydroquinone + Acetic acid, butyl ester
- Hydroquinone + Acetic acid
- Hydroquinone + Methyl Alcohol
- Ethanol + Hydroquinone
- Isopropyl Alcohol + Hydroquinone
- Hydroquinone + Water + 1,4,7,10,13,16-Hexaoxacyclooctadecane
- 2-Butanone, 3-methyl- + Hydroquinone + Water
- Methyl Isobutyl Ketone + Hydroquinone + Water
- 2-Pentanone + Hydroquinone + Water
- 2-Octanone + Hydroquinone + Water
Sources
- Crippen Method
- Liquid liquid equilibria for the quaternary system methyl isobutyl ketone water phenol hydroquinone
- Ternary liquid-liquid equilibria for methyl isopropyl ketone + (resorcinol or hydroquinone) + water systems at different temperatures
- Liquid-liquid equilibrium for ternary systems, methyl isobutyl ketone +(catechol, resorcinol and hydroquinone) + water at 333.15 K, 343.15 K and 353.15 K
- Liquid pharmaceuticals formulation by eutectic formation
- Effects of structural isomerism on solution behaviour of solutes: Apparent molar volumes and isentropic compression of catechol, resorcinal, and hydroquinone in aqueous solution at T = (283.15, 293.15, 298.15, 303.15, and 313.15) K
- Enthalpies of formation of dihydroxybenzenes revisited: Combining experimental and high-level ab initio data
- Experimental result and data correlation of liquid-liquid equilibrium for methyl isopropyl ketone + o, m, p-dihydroxybenzene + water at 333.15 K, 343.15 K and 353.15 K
- Di-Hydroxybenzenes: Catechol, Resorcinol, and Hydroquinone. Enthalpies of Phase Transitions Revisited
- Measurement of enthalpy curves of phase change materials via DSC and T-History: When are both methods needed to estimate the behaviour of the bulk material in applications?
- Ternary and Quaternary Liquid-Liquid Equilibria for Systems of Methyl Butyl Ketone + Water + Hydroquinone + Phenol at 313.2 K and Atmospheric Pressure
- Solubility of 3,7,9,11-Tetraoxo-2,4,6,8,10-pentaaza[3.3.3] Propellane (TOPAP) in Different Pure Solvents at Temperatures between 273.15 and 318.15 K
- Liquid-Liquid Equilibria for Ternary (Methyl Propyl Ketone + Hydroquinone or Resorcinol + Water) Systems at 298.15, 318.15, and 333.15 K
- Liquid Liquid Equilibria for Octan-2-one + Dihydroxybenzene + Water at Different Temperatures: Experimental Data and Thermodynamic Modeling
- Measurements and Thermodynamic Modeling of Liquid-Liquid Equilibria Data for the Ternary (Methyl Propyl Ketone + Catechol/Resorcinol/Hydroquinone + Water) Systems
- Solubility of Hydroquinone in Different Solvents from 276.65 K to 345.10 K
- Vapor Pressure Characterization of Several Phenolics and Polyhydric Compounds by Knudsen Effusion Method
- Liquid-Liquid Equilibria for the Ternary System Methyl Isobutyl Ketone + Water + Hydroquinone
- Measurements of Liquid Liquid Equilibria for the Quaternary System 2-Methoxy-2-methylpropane + Phenol + Hydroquinone + Water at 313.15 K
- Liquid Liquid Equilibria for Ternary Systems: Methyl Butyl Ketone + Phenol + Water and Methyl Butyl Ketone + Hydroquinone + Water at 298.15 K and 323.15 K
- Activity Coefficient Studies in Ternary Aqueous Solutions at 298.15 K: H2O + r-Cyclodextrin + Potassium Acetate and H2O + 18-Crown-6 + Hydroquinone Systems
- Joback Method
- KDB
- Aqueous Solubility Prediction Method
- Estimated Solubility Method
- McGowan Method
- NIST Webbook
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