1,4-Benzoquinone

  • Identifiers

    CAS mumber
    106-51-4

    Molecular formula
    C6H4O2

    SMILES
    C1=CC(=O)C=CC1=O

  • Properties

    XLogP3-AA
    0.2 Well soluble in TEC, MMB, DEP

    Molecular weight
    108.09 g/mol

    Melting points

    • 240.3 °F (NTP, 1992)
    • 115.7 °C
    • Heat of fusion at melting point = 1.845X10+7 J/kmol
    • 115.7 °C
    • 116 °C
    • 240 °F

    Boiling points

    • SUBLIMES (NTP, 1992)
    • ~180 °C
    • Sublimes

    Flash points

    • 559 °F (NTP, 1992)
    • 93 °C
    • 100-200 °F (38-93 °C) (CLOSED CUP)
    • 38-93 °C
    • 100-200 °F

    Solubilities

    • Slightly soluble (NTP, 1992)
    • SOL IN ALKALIES, HOT PETROLEUM ETHER
    • > 10% in ether
    • > 10% in ethanol
    • Water solubility = 1.113X10+4 mg/l @ 18 °C
    • 11.1 mg/mL at 18 °C
    • Solubility in water: poor
    • Slight

  • Synonyms

    • p-benzoquinone
    • 1,4-BENZOQUINONE
    • Benzoquinone
    • Quinone
    • 106-51-4
    • p-Quinone
    • cyclohexa-2,5-diene-1,4-dione
    • para-Benzoquinone
    • Chinone
    • 2,5-Cyclohexadiene-1,4-dione
    • Cyclohexadienedione
    • para-Quinone
    • 1,4-Benzoquine
    • 1,4-Cyclohexadienedione
    • 1,4-Dioxybenzene
    • Steara pbq
    • p-Chinon
    • Benzo-chinon
    • Benzo-1,4-quinone
    • 1,4-Diossibenzene
    • Chinon
    • 1,4-Dioxy-benzol
    • 1,4-Cyclohexadiene dioxide
    • semiquinone radicals
    • Caswell No. 719C
    • Semiquinone anion
    • RCRA waste number U197
    • NCI-C55845
    • CCRIS 933
    • USAF P-220
    • HSDB 1111
    • Cyclohexadiene-1,4-dione
    • 1,4-Benzochinon
    • EINECS 203-405-2
    • MFCD00001591
    • NSC 36324
    • NSC-36324
    • UN2587
    • EPA Pesticide Chemical Code 059805
    • UNII-3T006GV98U
    • [1,4]benzoquinone
    • DTXSID6020145
    • CHEBI:16509
    • AI3-09068
    • Quinone1,4-Benzoquinone
    • QUINONE [MI]
    • QUINONE [WHO-DD]
    • PARA-QUINONE [IARC]
    • CHEMBL8320
    • DTXCID40145
    • 2,5-cyclohexadiene-1-4-dione
    • 3225-29-4
    • 1,4-BENZOQUINONE [HSDB]
    • EC 203-405-2
    • 3T006GV98U
    • 1,4-BENZOQUINONE [USP-RS]
    • UN 2587
    • 1,4-Benzoquinone, 99%
    • PARA-QUINONE (IARC)
    • 2,5-Cyclohexadiene-1,4-dione, radical ion(1-)
    • p-Chinon [German]
    • Benzo-chinon [German]
    • 1,4-Benzoquinone; SKF-21232
    • 1,4-BENZOQUINONE (USP-RS)
    • Chinon [Dutch, German]
    • 1,4 benzoquinone
    • CAS-106-51-4
    • 1,4-Dioxy-benzol [German]
    • 1,4-Diossibenzene [Italian]
    • RCRA waste no. U197
    • parabenzochinon
    • paraQuinone
    • pBenzoquinone
    • pChinon
    • pQuinone
    • parabenzoquinone
    • p-benzo-quinone
    • C6H4O2
    • 1,4benzoquinone
    • 1,4Dioxybenzene
    • 1,4Dioxybenzol
    • 1,4Benzoquine
    • 1,4Diossibenzene
    • Quinone; p-BQ
    • NSC36324
    • Caswell No 719C
    • 2,4-dione
    • p-BQ
    • 1,4Cyclohexadienedione
    • p-Benzoquinone (OSHA)
    • Benzo-1,4-quinone #
    • Lopac-B-1266
    • 1,4Cyclohexadiene dioxide
    • Quinone (ACGIH:OSHA)
    • Benzoquinone [UN2587]
    • Epitope ID:116219
    • WLN: L6V DVJ
    • Chinon(DUTCH, GERMAN)
    • 2,5Cyclohexadiene1,4dione
    • cid_4650
    • Lopac0_000120
    • SCHEMBL18103
    • MLS002454445
    • GTPL6307
    • BDBM22774
    • CHEBI:39439
    • HMS2230N13
    • HMS3260G22
    • Quinone; 1,4-Cyclohexanedienedione
    • Tox21_202020
    • Tox21_302970
    • Tox21_500120
    • BBL010327
    • Benzoquinone [UN2587] [Poison]
    • c0261
    • STK398389
    • AKOS000119965
    • AKOS025243267
    • CCG-204215
    • FB01020
    • LP00120
    • SDCCGSBI-0050108.P002
    • 2,5-CYCLOHEXANDIEN-1,4-DIONE
    • p-Benzoquinone, reagent grade, >=98%
    • NCGC00015139-01
    • NCGC00015139-02
    • NCGC00015139-03
    • NCGC00015139-04
1 3

Botanical

Name CAS Botanical Proportion
Ketaki (India) Pandanus fascicularis Lam., var. Ketaki, fam. Pandanaceae 1.3%