Synthesis of hydroquinone

Preparation of hydroquinone

Preparation of hydroquinone

Preparation of hydroquinone

10 g of finely powdered quinone are suspended in cold water, and the liquid saturated with sulphur dioxide until, after the intermediate formation of hydroquinone, complete solution and decolorisation have occurred. The liquid is repeatedly extracted with ether until nothing further is removed, the ether expelled on a water bath, and the residue recrystallised from dilute sulphurous acid with the addition of animal charcoal. The yield of hydroquinone is 80%. Colourless prisms; soluble in ether, alcohol, and warm water; sublimes at a gentle heat.

Systematic organic chemistry, by W. M. Cumming, 187, 1937.





InChI Key


Canonical SMILES


MeSH Synonyms

1,4-dihydroxybenzene, Artra, beta-quinol, Black and White, Eldopaque, Eldopaque Forte, Eldoquin, Eldoquin Forte, Esoterica, Hidroquilaude, Hidroquin, Hidroquinona Isdin, hydroquinone, hydroquinone, copper (1+) salt, hydroquinone, lead (2+) salt (2:1), hydroquinone, monocopper (2+) salt, ICN brand 1 of hydroquinone, ICN brand 2 of hydroquinone, ICN brand 3 of hydroquinone, ICN brand 4 of hydroquinone, Licostrata, Lustra, Melanasa, Melanex, Melpaque, Melquin, Neostrata HQ, p-benzenediol, Phiaquin, Plough brand 1 of hydroquinone, Plough brand 2 of hydroquinone, Solaquin, Stratus brand 1 of hydroquinone, Stratus brand 2 of hydroquinone, Ultraquin

Depositor-Supplied Synonyms

hydroquinone, 1,4-benzenediol, Benzene-1,4-diol, 1,4-Dihydroxybenzene, Quinol, p-Benzenediol, hydroquinol, Benzoquinol, 123-31-9, p-Dihydroxybenzene, p-Hydroxyphenol, 4-Hydroxyphenol, Eldoquin, Phiaquin, p-Dioxybenzene, p-Hydroquinone, Hydroquinole, Eldopaque, Dihydroxybenzene, Benzohydroquinone, Dihydroquinone, Idrochinone, Tecquinol, Solaquin forte, Hidroquinone, Hydrochinon, Hydrochinone, Arctuvin, Tequinol, Artra, p-Dioxobenzene, Eldopaque Forte, Eldoquin Forte, Derma-Blanch, 1,4-Dihydroxy-benzol, Tenox HQ, 1,4-Diidrobenzene, Melanex, beta-quinol, Diak 5, 1,4-Dihydroxybenzen, Benzene, p-dihydroxy-, Usaf ek-356, 1,4-Dihydroxy-benzeen, para-Dioxybenzene, para-Hydroquinone, alpha-hydroquinone, Pyrogentistic acid, HE 5, Black and White Bleaching Cream, NCI-C55834, para-Dihydroxybenzene, Idrochinone [Italian], Hydroquinoue, hydroquinone gr, a-Hydroquinone, p Benzendiol, p-Hydroxybenzene, b-Quinol, para-Hydroxyphenol, Hydrochinon [Czech, Polish], 1,4-Dihydroxybenzen [Czech], 1,4-Diidrobenzene [Italian], 1,4-Hydroxybenzene, 1,4-Dihydroxy-benzeen [Dutch], 1,4-Dihydroxy-benzol [German], CHEBI:17594, NSC 9247, hydroquinone for synthesis, UN2662, CHEMBL537, UNII-XV74C1N1AE, CCRIS 714, AI3-00072, HSDB 577, QIGBRXMKCJKVMJ-UHFFFAOYSA-N, EINECS 204-617-8, Hydroquinone [UN2662] [Poison], Hydroquinone (USP), Hydroquinone [USP], NCGC00015523-02, DSSTox_CID_716, DSSTox_RID_75754, DSSTox_GSID_20716, CAS-123-31-9, SMR000059154, hydrokinone, hydroquinon, quinnone, Eldopacque, Accutin, Elopaque, Epiquin, Sunvanish, hydroq uinone, p-Dihydroquinone, p-Diphenol, Dihydroxybenzen e, Hydroquinone, HQ, .beta.-Quinol, HQE, Hydroquinone polymer, Hydroquinone tablets, p -Dihydroxybenzene, 1,4-Benzendil, Artra (Salt/Mix), HYDROP, HYDROQUI, .alpha.-Hydroquinone, phenol derivative, 4, PubChem9139, Spectrum_001757, 4e3h, ACMC-209aok, SpecPlus_000769, 1,4-Dihydrobenzoquinone, ELDOQUIN (TN), HYDROQUINONE BAKER, Spectrum2_001672, Spectrum3_000656, Spectrum4_000633, Spectrum5_001430, 4-DIHYDROXYBENZENE, Lopac-H-9003, 1,2 BENZOLDIOL, WLN: QR DQ, bmse000293, Epitope ID:116206, AC1L1A0Q, AC1Q78XD, XV74C1N1AE, HT1014_SIGMA, Lopac0_000577, SCHEMBL15516, BSPBio_002291, KBioGR_001246, KBioSS_002237, PHENOXY, 4-HYDROXY-, 1,4-Dihydroxybenzene, XIII, KSC175A5P, MLS000069815, MLS001074911, BIDD:ER0340, DivK1c_006865, H9003_SIGMA, SPECTRUM1504237, Hydrochinon(CZECH, POLISH), SPBio_001883, Black & White Bleaching Cream, H3660_SIAL, H9003_SIAL, BDBM26190, CTK0H5057, H17902_SIAL, HMDB02434, KBio1_001809, KBio2_002237, KBio2_004805, KBio2_007373, KBio3_001511, NSC9247, MolPort-000-871-937, BB_NC-2226, HMS1922H15, HMS2093E08, HMS3261D16, LABOTEST-BB LTBB001931, LS-23, Pharmakon1600-01504237, HY-B0951, Hydroquinone [UN2662] [Poison], Hydroquinone; 1,4-Dihydroxybenzene, NSC-9247, ZINC5133378, Tox21_110169, Tox21_202345, Tox21_300015, ANW-18114, BBL011606, CCG-39082, DNC000142, DNC000750, NSC758707, SBB060421, STK397446, ZINC05133378, AKOS000119003, Tox21_110169_1, AS00174, LP00577, MCULE-3953269041, NE10177, NSC-758707, RP18954, RTR-035006, TRA0027681, UN 2662, TRA-0192683, 1,4-+/-(1/2) paragraph signthorn.O, NCGC00015523-01, NCGC00015523-03, NCGC00015523-04, NCGC00015523-05, NCGC00015523-06, NCGC00015523-07, NCGC00015523-08, NCGC00015523-09, NCGC00015523-10, NCGC00015523-11, NCGC00015523-12, NCGC00015523-13, NCGC00090880-01, NCGC00090880-02, NCGC00090880-03, NCGC00090880-04, NCGC00090880-05, NCGC00254037-01, NCGC00259894-01, AN-43474, BC207641, BP-21160, KB-52519, OR000327, OR192027, OR210005, OR210006, OR257718, 1,4- paragraph signthornoC>>u+/-(1/2), AB1002199, TR-035006, EU-0100577, FT-0606877, FT-0643608, ST50214344, C00530, D00073, H 9003, 19538-EP2272837A1, 19538-EP2284165A1, 19538-EP2302015A1, 19538-EP2305825A1, 19538-EP2309584A1, 19538-EP2311804A2, 19538-EP2314576A1, 19538-EP2314579A1, 19538-EP2314584A1, 19538-EP2315303A1, 19538-EP2371803A1, 19538-EP2377843A1, 97871-EP2305685A1, 122680-EP2295053A1, Quinol/1-4 dihydroxy benzene/1-4 hydroxy benzene, 3B4-0135, I01-8167, 094CADDB-59BF-4EDF-B278-59791B203EA2, 3B1-007598, InChI=1/C6H6O2/c7-5-1-2-6(8)4-3-5/h1-4,7-8, 57534-13-1, 8027-02-9, PLQ

Removed Synonyms

Hidroquilaude, Licostrata, Esoterica, Hidroquin, Melanasa, Melpaque, Solaquin, Ultraquin, Melquin, Lustra, Mixture Name, |A-hydroquinone, Black and White, Neostrata HQ, Tri-Luma, Hidroquinona Isdin, AIDA, 1,4-dihydroquinone, 1,4-CYCLOHEXANEDIOL, 1,4-BENZOQUINONE, ICN brand 1 of hydroquinone, ICN brand 2 of hydroquinone, ICN brand 3 of hydroquinone, ICN brand 4 of hydroquinone, Plough brand 1 of hydroquinone, Plough brand 2 of hydroquinone, C6H6O2, CID785, Stratus brand 1 of hydroquinone, Stratus brand 2 of hydroquinone, hydroquinone, copper (1+) salt, hydroquinone, monocopper (2+) salt, c0091, hydroquinone, lead (2+) salt (2:1), H0186, C031927, C403008, 556-48-9, HQ, 105-34-0, 10534-59-5, 122-95-2

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