Benzo(1,2-c:4,5-c')dipyrrole-1,3,5,7(2H,6H)-tetrone

Overview IFRA Request a quote

  • Identifiers

    CAS number
    2550-73-4

    Molecular formula
    C10H4N2O4

    SMILES
    C1=C2C(=CC3=C1C(=O)NC3=O)C(=O)NC2=O

    Safety labels

  • Odor profile

    Fragrance
    Odorless 66.27%
    Burnt 31.36%
    Bitter 24.13%
    Pungent 17.46%
    Cooked 14.62%
    Sharp 14.61%
    Musty 14.12%
    Sour 13.99%
    Nutty 13.77%
    Phenolic 13.44%

     

    Flavor
    Bitter 93.47%
    Odorless 32.79%
    Nitrile 18.71%
    Rotten 17.96%
    Very strong 17.43%
    Formyl 17.39%
    Indole 16.97%
    Sweet-like 16.93%
    Oriental 16.84%
    Moth ball 16.82%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    -0.5

    pKa est.
    8.67 (weak base)

    Molecular weight
    216.15 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Boiling point est.
    679°C

    Flash point

    • 241.93 ˚C est.

  • Synonyms

    • Pyromellitic diimide
    • 2550-73-4
    • Pyromellitimide
    • Pyromellitic acid diimide
    • Benzo[1,2-c:4,5-c']dipyrrole-1,3,5,7(2H,6H)-tetrone
    • 1,2,4,5-Benzenetetracarboxylic acid diimide
    • 1,2,4,5-Benzenetetracarboxylic 1,2:4,5-diimide
    • 32XA0W314G
    • NSC-55160
    • DTXSID4062515
    • Benzo(1,2-c:4,5-c')dipyrrole-1,3,5,7(2H,6H)-tetrone
    • RefChem:565135
    • DTXCID4037320
    • 219-852-1
    • pyrrolo[3,4-f]isoindole-1,3,5,7-tetrone
    • MFCD00005004
    • pyrrolo[3,4-f]isoindole-1,3,5,7(2h,6h)-tetraone
    • Pyrrolo[3,4-f]isoindole-1,3,5,7(2H,6H)-tetrone
    • 1H,2H,3H,5H,6H,7H-pyrrolo[3,4-f]isoindole-1,3,5,7-tetrone
    • PYROMELLITICDIIMIDE
    • 2H,6H-azolino[3',4'-1,2]benzo[4,5-c]azolidine-1,3,5,7-tetraone
    • Benzene-1,2,4,5-tetracarboxylic diimide
    • UNII-32XA0W314G
    • EINECS 219-852-1
    • NSC 55160
    • Benzene-1,2:4,5-tetracarboxydiimide
    • Cambridge id 6648564
    • Pyromellitic diimide, 97%
    • Oprea1_370668
    • SCHEMBL342450
    • UGQZLDXDWSPAOM-UHFFFAOYSA-
    • NSC55160
    • BBL001823
    • SBB044943
    • STK386605
    • AKOS000275022
    • CCG-357155
    • MS-9670
    • FP169218
    • ST010119
    • SY050133
    • 1,4,5-Benzenetetracarboxylic acid diimide
    • CS-0129471
    • NS00027905
    • P1153
    • D82058
    • 1,4,5-Benzenetetracarboxylic 1,2:4,5-diimide
    • F341699
    • SR-01000393974
    • SR-01000393974-1
    • Benzo[1,5-c']dipyrrole-1,3,5,7(2H,6H)-tetrone
    • Q27256197
    • Pyrrolo[3,4-f]isoindole-1,3,5,7(2H,6H)-tetrone #
    • 2H,6H-azolidino[3',4'-5,4]benzo[c]azoline-1,3,5,7-tetraone
    • Pyromellitic diimide, 97% [Benzene-1,2,4,5-tetracarboxylic diimide
    • InChI=1/C10H4N2O4/c13-7-3-1-4-6(10(16)12-8(4)14)2-5(3)9(15)11-7/h1-2H,(H,11,13,15)(H,12,14,16)
    • 2550-73-4

  • Applications

    Benzo(1,2-c:4,5-c')dipyrrole-1,3,5,7(2H,6H)-tetrone (CAS 2550-73-4) is used mainly as a conjugated building block in organic electronics and as an intermediate for dyes and pigments, supporting OLEDs and other optoelectronic devices as well as colorants for coatings and inks. It is also explored as a monomer or functional component in high-performance polymers and specialty resins, contributing to thermal stability and electronic properties. In synthetic chemistry, it serves as a precursor for heterocyclic compounds that may find applications in pharmaceutical and agrochemical research. In coatings and plastics, its planar, carbonyl-bearing core provides a reactive scaffold for pigmentation and optical tuning, making it relevant to advanced materials development and formulation.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 4.71
    methanol 8.97
    isopropanol 2.94
    water 1.44
    ethyl acetate 3.25
    n-propanol 3.38
    acetone 6.69
    n-butanol 2.75
    acetonitrile 3.05
    DMF 53.37
    toluene 0.59
    isobutanol 1.97
    1,4-dioxane 10.72
    methyl acetate 4.65
    THF 13.38
    2-butanone 7.04
    n-pentanol 2.29
    sec-butanol 2.29
    n-hexane 0.13
    ethylene glycol 6.43
    NMP 65.64
    cyclohexane 0.1
    DMSO 49.77
    n-butyl acetate 3.58
    n-octanol 2.56
    chloroform 0.28
    n-propyl acetate 2.3
    acetic acid 3.48
    dichloromethane 0.86
    cyclohexanone 8.88
    propylene glycol 3.75
    isopropyl acetate 2.03
    DMAc 62.01
    2-ethoxyethanol 11.82
    isopentanol 2.03
    n-heptane 0.28
    ethyl formate 4.31
    1,2-dichloroethane 1.2
    n-hexanol 2.17
    2-methoxyethanol 23.05
    isobutyl acetate 0.84
    tetrachloromethane 0.1
    n-pentyl acetate 4.22
    transcutol 15.67
    n-heptanol 2.88
    ethylbenzene 0.5
    MIBK 2.13
    2-propoxyethanol 13.27
    tert-butanol 2.24
    MTBE 1.11
    2-butoxyethanol 10.69
    propionic acid 4.47
    o-xylene 0.7
    formic acid 8.21
    diethyl ether 2.3
    m-xylene 0.53
    p-xylene 0.68
    chlorobenzene 0.43
    dimethyl carbonate 6.45
    n-octane 0.18
    formamide 18.81
    cyclopentanone 13.0
    2-pentanone 4.65
    anisole 1.7
    cyclopentyl methyl ether 3.27
    gamma-butyrolactone 18.06
    1-methoxy-2-propanol 12.8
    pyridine 7.04
    3-pentanone 4.33
    furfural 17.1
    n-dodecane 0.17
    diethylene glycol 15.66
    diisopropyl ether 0.49
    tert-amyl alcohol 1.92
    acetylacetone 5.12
    n-hexadecane 0.2
    acetophenone 3.51
    methyl propionate 6.37
    isopentyl acetate 2.44
    trichloroethylene 1.04
    n-nonanol 2.75
    cyclohexanol 2.19
    benzyl alcohol 2.88
    2-ethylhexanol 1.39
    isooctanol 1.87
    dipropyl ether 2.61
    1,2-dichlorobenzene 0.5
    ethyl lactate 4.28
    propylene carbonate 5.88
    n-methylformamide 21.55
    2-pentanol 1.46
    n-pentane 0.14
    1-propoxy-2-propanol 8.06
    1-methoxy-2-propyl acetate 6.59
    2-(2-methoxypropoxy) propanol 9.17
    mesitylene 0.38
    ε-caprolactone 9.28
    p-cymene 0.72
    epichlorohydrin 9.33
    1,1,1-trichloroethane 0.25
    2-aminoethanol 6.04
    morpholine-4-carbaldehyde 48.14
    sulfolane 27.76
    2,2,4-trimethylpentane 0.05
    2-methyltetrahydrofuran 5.32
    n-hexyl acetate 4.15
    isooctane 0.03
    2-(2-butoxyethoxy)ethanol 12.08
    sec-butyl acetate 1.24
    tert-butyl acetate 1.84
    decalin 0.09
    glycerin 11.11
    diglyme 18.59
    acrylic acid 5.91
    isopropyl myristate 1.86
    n-butyric acid 3.61
    acetyl acetate 1.46
    di(2-ethylhexyl) phthalate 3.14
    ethyl propionate 2.85
    nitromethane 10.97
    1,2-diethoxyethane 5.57
    benzonitrile 2.29
    trioctyl phosphate 2.62
    1-bromopropane 0.6
    gamma-valerolactone 32.46
    n-decanol 2.2
    triethyl phosphate 2.55
    4-methyl-2-pentanol 0.83
    propionitrile 2.99
    vinylene carbonate 5.33
    1,1,2-trichlorotrifluoroethane 8.93
    DMS 4.44
    cumene 0.4
    2-octanol 1.84
    2-hexanone 3.27
    octyl acetate 2.94
    limonene 0.96
    1,2-dimethoxyethane 18.09
    ethyl orthosilicate 2.16
    tributyl phosphate 2.61
    diacetone alcohol 5.2
    N,N-dimethylaniline 2.25
    acrylonitrile 5.08
    aniline 2.05
    1,3-propanediol 7.7
    bromobenzene 0.27
    dibromomethane 0.41
    1,1,2,2-tetrachloroethane 1.17
    2-methyl-cyclohexyl acetate 2.32
    tetrabutyl urea 6.66
    diisobutyl methanol 0.93
    2-phenylethanol 2.76
    styrene 0.5
    dioctyl adipate 3.27
    dimethyl sulfate 12.39
    ethyl butyrate 2.93
    methyl lactate 10.59
    butyl lactate 5.8
    diethyl carbonate 2.16
    propanediol butyl ether 8.23
    triethyl orthoformate 2.89
    p-tert-butyltoluene 0.59
    methyl 4-tert-butylbenzoate 5.68
    morpholine 15.11
    tert-butylamine 0.95
    n-dodecanol 1.65
    dimethoxymethane 22.78
    ethylene carbonate 4.62
    cyrene 12.75
    2-ethoxyethyl acetate 7.58
    2-ethylhexyl acetate 2.16
    1,2,4-trichlorobenzene 0.81
    4-methylpyridine 5.08
    dibutyl ether 2.24
    2,6-dimethyl-4-heptanol 0.93
    DEF 14.65
    dimethyl isosorbide 12.79
    tetrachloroethylene 0.81
    eugenol 7.42
    triacetin 5.56
    span 80 6.94
    1,4-butanediol 4.21
    1,1-dichloroethane 0.4
    2-methyl-1-pentanol 1.61
    methyl formate 13.05
    2-methyl-1-butanol 1.88
    n-decane 0.27
    butyronitrile 2.23
    3,7-dimethyl-1-octanol 1.45
    1-chlorooctane 0.63
    1-chlorotetradecane 0.37
    n-nonane 0.23
    undecane 0.21
    tert-butylcyclohexane 0.06
    cyclooctane 0.07
    cyclopentanol 3.29
    tetrahydropyran 4.04
    tert-amyl methyl ether 1.44
    2,5,8-trioxanonane 15.29
    1-hexene 0.45
    2-isopropoxyethanol 6.0
    2,2,2-trifluoroethanol 3.85
    methyl butyrate 3.75

    Scent© AI

1 4

IFRA standard 51

Recommendation
No restriction
Maximum acceptable concentrations in the finished product (%)
Category 1
Products applied to the lips
 No restriction Category 7A
Rinse-off products applied to the hair with some hand contact
 No restriction
Category 2
Products applied to the axillae
 No restriction Category 7B
Leave-on products applied to the hair with some hand contact
 No restriction
Category 3
Products applied to the face/body using fingertips
 No restriction Category 8
Products with significant anogenital exposure
 No restriction
Category 4
Products related to fine fragrance
 No restriction Category 9
Products with body and hand exposure, primarily rinse off
 No restriction
Category 5A
Body lotion products applied to the body using the hands (palms), primarily leave on
 No restriction Category 10A
Household care products with mostly hand contact
 No restriction
Category 5B
Face moisturizer products applied to the face using the hands (palms), primarily leave on
 No restriction Category 10B
Household care products with mostly hand contact, including aerosol/spray products (with potential leave-on skin contact)
 No restriction
Category 5C
Hand cream products applied to the hands using the hands (palms), primarily leave on
 No restriction Category 11A
Products with intended skin contact but minimal transfer of fragrance to skin from inert substrate without UV exposure
 No restriction
Category 5D
Baby Creams, baby Oils and baby talc
 No restriction Category 11B
Products with intended skin contact but minimal transfer of fragrance to skin from inert substrate with potential UV exposure
 No restriction
Category 6
Products with oral and lip exposure
 No restriction Category 12
Products not intended for direct skin contact, minimal or insignificant transfer to skin
 No restriction