Monosodium 5-sulfoisophthalate

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  • Identifiers

    CAS number
    6362-79-4

    Molecular formula
    C8H5NaO7S

    SMILES
    C1=C(C=C(C=C1C(=O)O)S(=O)(=O)[O-])C(=O)O.[Na+]

    Safety labels

    Corrosive
    Corrosive

    Irritant
    Irritant

    Health Hazard
    Health

  • Odor profile

    Fragrance
    Odorless 84.18%
    Burnt 24.37%
    Sour 24.06%
    Cooked 20.18%
    Bitter 18.53%
    Roasted 18.1%
    Sharp 17.17%
    Savory 16.88%
    Clean 16.55%
    Nutty 15.48%

     

    Flavor
    Odorless 51.91%
    Bitter 40.93%
    Nutty 30.9%
    Mild 28.48%
    Very mild 27.79%
    Faint 26.57%
    Sour 23.01%
    Urine 22.33%
    Nitrile 21.21%
    Yeast 21.04%

     

    Odor impact est.
    Low

  • Properties

    pKa est.
    2.8 (strong acid)

    Molecular weight
    268.18 g/mol

    Flash point

    • 251.02 ˚C est.

  • Synonyms

    • Monosodium 5-sulfoisophthalate
    • Sodium hydrogen-5-sulphoisophthalate
    • UNII-5I79J6MURZ
    • Isophthalic acid, 5-sulfo-, monosodium salt
    • EINECS 228-845-2
    • 5I79J6MURZ
    • 3,5-Dicarboxybenzenesulfonic acid, sodium salt
    • DELION HS
    • 3,5-Dikarboxybenzensulfonan sodny
    • 1,3-Benzenedicarboxylic acid, 5-sulfo-, monosodium salt
    • Benzenesulfonic acid, 3,5-dicarboxy-, sodium salt
    • Kyselina 3,5-dikarboxybenzensulfonova sodny
    • Benzene-1,3-dicarboxylic acid, 5-sulfo-, monosodium salt
    • EC 228-845-2
    • MONOSODIM 5-SULFOISOPHTHALATE
    • RefChem:7812
    • 228-845-2
    • 6362-79-4
    • sodium 3,5-dicarboxybenzenesulfonate
    • 5-Sulfoisophthalic Acid Monosodium Salt
    • Sodium 5-Sulfoisophthalate
    • C8H5NaO7S
    • MFCD00007495
    • DTXSID9029279
    • sodium 3,5-dicarboxybenzene-1-sulfonate
    • 5-Sulfoisophthalic acid sodium salt
    • sodium;3,5-dicarboxybenzenesulfonate
    • 1,3-Benzenedicarboxylic acid, 5-sulfo-, sodium salt (1:1)
    • 3,5-Dikarboxybenzensulfonan sodny [Czech]
    • Kyselina 3,5-dikarboxybenzensulfonova sodny [Czech]
    • Sodium 5-sulphoisophthalate
    • SCHEMBL672765
    • 5-sulfoisophthalic acid sodium
    • DTXCID009279
    • CHEMBL3560997
    • GAA36279
    • Tox21_200715
    • AKOS015894368
    • AKOS015963289
    • NCGC00258269-01
    • AC-12231
    • AS-14124
    • 5-Sulfoisophthalic acid sodium salt, 95%
    • 5-Sulfoisophthalic acid sodium salt, 98%
    • CAS-6362-79-4
    • NS00078388
    • EN300-172946
    • A845355
    • 5-Sulfo-1,3-benzenedicarboxylic acid monosodium salt
    • Q27262303
    • 6362-79-4

  • Applications

    Monosodium 5-sulfoisophthalate (CAS 6362-79-4) is a hydrophilic, sulfonated aromatic monomer commonly used as an intermediate in polymer synthesis and as a co-monomer to introduce ionic sulfonate groups into polymers. It is evaluated for applications in waterborne coatings, inks and adhesives, where its sulfonate functionality enhances pigment dispersion and formulation stability. It also serves as an intermediate in dye and pigment chemistry, facilitating ionic interactions that improve dyeing and pigment compatibility. In specialty polymers and membranes, such as ion-exchange resins and proton-conducting materials, the compound contributes ionic character that supports performance. Depending on formulation, it may be used as a dispersing component in cleaning or formulation systems, always subject to local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 63.71
    methanol 93.62
    isopropanol 25.56
    water 6.15
    ethyl acetate 4.63
    n-propanol 30.62
    acetone 21.38
    n-butanol 16.69
    acetonitrile 8.84
    DMF 120.18
    toluene 8.23
    isobutanol 11.17
    1,4-dioxane 22.01
    methyl acetate 5.4
    THF 45.4
    2-butanone 12.62
    n-pentanol 9.25
    sec-butanol 13.04
    n-hexane 0.82
    ethylene glycol 55.38
    NMP 99.69
    cyclohexane 1.5
    DMSO 113.06
    n-butyl acetate 4.74
    n-octanol 18.64
    chloroform 1.0
    n-propyl acetate 2.48
    acetic acid 8.45
    dichloromethane 3.39
    cyclohexanone 8.98
    propylene glycol 35.33
    isopropyl acetate 2.97
    DMAc 86.69
    2-ethoxyethanol 43.0
    isopentanol 7.61
    n-heptane 3.08
    ethyl formate 6.4
    1,2-dichloroethane 5.17
    n-hexanol 9.77
    2-methoxyethanol 97.56
    isobutyl acetate 0.66
    tetrachloromethane 0.2
    n-pentyl acetate 8.88
    transcutol 64.02
    n-heptanol 19.65
    ethylbenzene 3.0
    MIBK 3.96
    2-propoxyethanol 44.53
    tert-butanol 12.45
    MTBE 5.3
    2-butoxyethanol 45.13
    propionic acid 8.12
    o-xylene 7.54
    formic acid 36.3
    diethyl ether 14.26
    m-xylene 5.75
    p-xylene 1.99
    chlorobenzene 1.83
    dimethyl carbonate 9.66
    n-octane 1.8
    formamide 65.71
    cyclopentanone 18.23
    2-pentanone 9.47
    anisole 7.44
    cyclopentyl methyl ether 13.72
    gamma-butyrolactone 19.66
    1-methoxy-2-propanol 66.69
    pyridine 27.2
    3-pentanone 8.28
    furfural 23.2
    n-dodecane 1.42
    diethylene glycol 46.79
    diisopropyl ether 2.64
    tert-amyl alcohol 7.92
    acetylacetone 7.56
    n-hexadecane 1.53
    acetophenone 6.88
    methyl propionate 10.86
    isopentyl acetate 2.79
    trichloroethylene 3.34
    n-nonanol 18.3
    cyclohexanol 7.07
    benzyl alcohol 10.0
    2-ethylhexanol 4.56
    isooctanol 9.85
    dipropyl ether 11.77
    1,2-dichlorobenzene 1.63
    ethyl lactate 5.64
    propylene carbonate 4.58
    n-methylformamide 58.01
    2-pentanol 9.12
    n-pentane 2.03
    1-propoxy-2-propanol 30.0
    1-methoxy-2-propyl acetate 10.51
    2-(2-methoxypropoxy) propanol 30.59
    mesitylene 3.33
    ε-caprolactone 8.58
    p-cymene 4.02
    epichlorohydrin 18.98
    1,1,1-trichloroethane 0.42
    2-aminoethanol 62.37
    morpholine-4-carbaldehyde 60.66
    sulfolane 31.4
    2,2,4-trimethylpentane 0.34
    2-methyltetrahydrofuran 14.76
    n-hexyl acetate 10.21
    isooctane 0.26
    2-(2-butoxyethoxy)ethanol 47.73
    sec-butyl acetate 1.2
    tert-butyl acetate 2.68
    decalin 0.43
    glycerin 54.68
    diglyme 49.96
    acrylic acid 11.41
    isopropyl myristate 5.18
    n-butyric acid 5.93
    acetyl acetate 1.31
    di(2-ethylhexyl) phthalate 5.96
    ethyl propionate 3.36
    nitromethane 15.7
    1,2-diethoxyethane 14.61
    benzonitrile 4.8
    trioctyl phosphate 5.43
    1-bromopropane 3.17
    gamma-valerolactone 31.64
    n-decanol 13.99
    triethyl phosphate 2.14
    4-methyl-2-pentanol 3.69
    propionitrile 7.8
    vinylene carbonate 4.39
    1,1,2-trichlorotrifluoroethane 13.68
    DMS 4.98
    cumene 1.75
    2-octanol 10.43
    2-hexanone 3.74
    octyl acetate 8.87
    limonene 4.48
    1,2-dimethoxyethane 29.86
    ethyl orthosilicate 2.16
    tributyl phosphate 2.84
    diacetone alcohol 9.89
    N,N-dimethylaniline 10.64
    acrylonitrile 13.41
    aniline 12.85
    1,3-propanediol 37.07
    bromobenzene 1.36
    dibromomethane 2.18
    1,1,2,2-tetrachloroethane 3.44
    2-methyl-cyclohexyl acetate 2.56
    tetrabutyl urea 12.03
    diisobutyl methanol 3.41
    2-phenylethanol 10.02
    styrene 3.06
    dioctyl adipate 6.87
    dimethyl sulfate 14.23
    ethyl butyrate 3.73
    methyl lactate 19.6
    butyl lactate 10.6
    diethyl carbonate 2.1
    propanediol butyl ether 35.58
    triethyl orthoformate 3.71
    p-tert-butyltoluene 3.86
    methyl 4-tert-butylbenzoate 22.01
    morpholine 36.26
    tert-butylamine 7.2
    n-dodecanol 9.42
    dimethoxymethane 81.52
    ethylene carbonate 3.1
    cyrene 22.77
    2-ethoxyethyl acetate 14.35
    2-ethylhexyl acetate 2.17
    1,2,4-trichlorobenzene 2.03
    4-methylpyridine 14.23
    dibutyl ether 7.38
    2,6-dimethyl-4-heptanol 3.41
    DEF 22.39
    dimethyl isosorbide 29.91
    tetrachloroethylene 2.72
    eugenol 26.47
    triacetin 9.25
    span 80 22.52
    1,4-butanediol 15.79
    1,1-dichloroethane 1.42
    2-methyl-1-pentanol 4.02
    methyl formate 26.81
    2-methyl-1-butanol 7.89
    n-decane 2.38
    butyronitrile 5.88
    3,7-dimethyl-1-octanol 6.88
    1-chlorooctane 5.32
    1-chlorotetradecane 2.34
    n-nonane 2.21
    undecane 1.84
    tert-butylcyclohexane 0.25
    cyclooctane 1.23
    cyclopentanol 11.12
    tetrahydropyran 12.52
    tert-amyl methyl ether 6.03
    2,5,8-trioxanonane 45.37
    1-hexene 2.2
    2-isopropoxyethanol 17.11
    2,2,2-trifluoroethanol 4.22
    methyl butyrate 3.4

    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