P-Toluenesulfonamide

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  • Identifiers

    CAS number
    70-55-3

    Molecular formula
    C7H9NO2S

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

    Safety labels

    Irritant
    Irritant

  • Odor profile

    Fragrance
    Odorless 69.52%
    Sulfurous 25.74%
    Cooked 23.44%
    Pungent 22.47%
    Roasted 20.99%
    Bitter 20.84%
    Burnt 19.79%
    Savory 19.35%
    Meaty 15.79%
    Garlic 15.62%

     

    Flavor
    Bitter 64.63%
    Odorless 24.48%
    Nitrile 21.91%
    Urine 20.16%
    Taco 20.12%
    Bread crust 19.88%
    Very strong 19.75%
    Almond shell 19.68%
    Indole 19.61%
    Roasted peanuts 19.55%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    0.8

    pKa est.
    9.68 (weak base)

    Molecular weight
    171.22 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Melting point expt.

    • 138 °C
    • MP: 105 °C (Hydrated)

    Boiling point

    • BP: 214 °C at 10 mm Hg

    Flash point

    • 185.76 ˚C est.
    • 202 °C (396 °F) Closed cup
    • 202 °C c.c.

    Solubility expt.

    • In water, 3.16X10+3 mg/L at 25 °C
    • Slightly soluble in water
    • Soluble in alcohol
    • Slightly soluble in ether; soluble in ethanol
    • Solubility in water, g/100ml at 25 °C: 0.316

  • Synonyms

    • P-TOLUENESULFONAMIDE
    • 4-Methylbenzenesulfonamide
    • 70-55-3
    • 4-Toluenesulfonamide
    • Tosylamide
    • p-Tosylamide
    • Toluene-4-sulfonamide
    • Benzenesulfonamide, 4-methyl-
    • para-Toluenesulfonamide
    • p-Toluenesulfonylamide
    • p-Tolylsulfonamide
    • p-Methylbenzenesulfonamide
    • Tolylsulfonamide
    • Toluene-4-sulphonamide
    • Toluene-p-sulphonamide
    • 4-Toluenesulfanamide
    • TOLUENESULFONAMIDE, P-
    • 4-Toluenesulfonic acid, amide
    • NSC-9908
    • DTXSID8029105
    • I8266RI90M
    • DTXCID109105
    • CHEBI:34435
    • 4-toluenesulfonylamide
    • para-toluenesulphonamide
    • RefChem:858209
    • PTS100
    • PTS 100
    • 200-741-1
    • 4-methylbenzene-1-sulfonamide
    • p-Toluenesulfamide
    • tosylamine
    • MFCD00011692
    • Gliclazide EP Impurity A
    • 4-tolylsulfonamide
    • PASAM
    • p-toluene sulphonamide
    • 4-methylbenzenesulphonamide
    • CHEMBL574
    • CAS-70-55-3
    • HSDB 5203
    • NSC 9908
    • EINECS 200-741-1
    • BRN 0472689
    • UNII-I8266RI90M
    • AI3-19503
    • p-toluensulfonamide
    • 4-tolylsulphonamide
    • 4J8
    • p-Toluenesulphonamide
    • 4-toluenesulphonamide
    • p-toluene sulfonamide
    • p-toluene-sulfonamide
    • Toluene-p-sulfonamide
    • Gliclazide impurity A
    • N-p-tolylsulfonylamine
    • Paratoulene sulfonamide
    • p-toluenesulfonic amide
    • para-toluen sulphonamide
    • para-toluene sulphonamide
    • 4-methylphenylsulphonamide
    • 4-methylphenyl sulfonamide
    • 4-methyl benzenesulfonamide
    • 4-methyl-benzenesulfonamide
    • WLN: ZSWR D1
    • 4-methylphenylsulphonylamine
    • EC 200-741-1
    • p-methyl-benzene sulfonamide
    • SCHEMBL7370
    • SCHEMBL29058
    • 4-11-00-00376 (Beilstein Handbook Reference)
    • MLS001065595
    • BIDD:ER0609
    • SCHEMBL351578
    • SCHEMBL428943
    • orb3029303
    • SCHEMBL4878659
    • SCHEMBL8432001
    • SCHEMBL27503287
    • BDBM10859
    • benzene, 1-methyl-4-sulphamoyl-
    • NSC9908
    • HMS3039B12
    • P-TOLUENESULFONAMIDE [HSDB]
    • Tox21_201594
    • Tox21_303506
    • aromatic/heteroaromatic sulfonamide 4
    • EBC-04049
    • SBB058201
    • STK416410
    • P-TOLUENESULFONAMIDE [USP-RS]
    • AKOS000149655
    • FS-3585
    • MSK000805-1000M
    • NCGC00091435-01
    • NCGC00091435-02
    • NCGC00091435-03
    • NCGC00257435-01
    • NCGC00259143-01
    • BP-12584
    • HY-79602
    • NCI60_042220
    • p-Toluenesulfonamide, reagent grade, 98%
    • SMR000568494
    • GLICLAZIDE IMPURITY A [EP IMPURITY]
    • CS-0012133
    • NS00010636
    • ST45216288
    • T0281
    • TOLBUTAMIDE IMPURITY A [EP IMPURITY]
    • EN300-15721
    • p-Toluenesulfonamide, ReagentPlus(R), >=99%
    • AE-562/40173366
    • F216546
    • doi:10.14272/LMYRWZFENFIFIT-UHFFFAOYSA-N.1
    • p-Toluenesulfonamide, Vetec(TM) reagent grade, 98%
    • BRD-K62412084-001-07-1
    • Gliclazide EP Impurity A ; Tolbutamide EP Impurity A
    • p-Toluenesulfonamide Solution in Methanol, 1000ug/mL
    • Q23013959
    • Z45415564
    • F0722-8812
    • p-Toluenesulfonamide, United States Pharmacopeia (USP) Reference Standard
    • 12552-95-3
    • 70-55-3

  • Applications

    Primarily, P-Toluenesulfonamide is used as an organic synthesis intermediate and building block for sulfonamide-containing compounds. In practice, it is employed in R&D to access a range of derivatives for pharmaceuticals and agrochemicals. It also functions as a precursor in polymer and materials chemistry, enabling the development of specialty additives and functional monomers for coatings and plastics. In laboratory workflows, it serves as a reagent in synthetic sequences and as a basis for further functionalization. Overall, its applications lie in chemical synthesis and development across multiple industries, with use governed by formulation needs and regulatory constraints.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 126.55
    methanol 255.34
    isopropanol 57.08
    water 4.0
    ethyl acetate 153.56
    n-propanol 63.36
    acetone 529.43
    n-butanol 41.08
    acetonitrile 337.77
    DMF 583.21
    toluene 2.21
    isobutanol 24.55
    1,4-dioxane 420.82
    methyl acetate 224.35
    THF 367.94
    2-butanone 308.2
    n-pentanol 23.11
    sec-butanol 36.28
    n-hexane 0.3
    ethylene glycol 31.11
    NMP 379.75
    cyclohexane 1.53
    DMSO 272.3
    n-butyl acetate 37.93
    n-octanol 8.49
    chloroform 7.47
    n-propyl acetate 51.24
    acetic acid 118.02
    dichloromethane 24.21
    cyclohexanone 315.67
    propylene glycol 44.57
    isopropyl acetate 44.26
    DMAc 395.41
    2-ethoxyethanol 72.52
    isopentanol 22.16
    n-heptane 0.94
    ethyl formate 106.01
    1,2-dichloroethane 29.49
    n-hexanol 22.4
    2-methoxyethanol 182.23
    isobutyl acetate 18.13
    tetrachloromethane 1.27
    n-pentyl acetate 19.17
    transcutol 76.24
    n-heptanol 10.75
    ethylbenzene 2.66
    MIBK 38.66
    2-propoxyethanol 66.25
    tert-butanol 46.3
    MTBE 25.61
    2-butoxyethanol 28.54
    propionic acid 80.46
    o-xylene 3.54
    formic acid 73.11
    diethyl ether 42.88
    m-xylene 2.08
    p-xylene 6.18
    chlorobenzene 12.82
    dimethyl carbonate 44.71
    n-octane 0.44
    formamide 308.42
    cyclopentanone 497.45
    2-pentanone 144.36
    anisole 35.56
    cyclopentyl methyl ether 43.0
    gamma-butyrolactone 407.07
    1-methoxy-2-propanol 86.42
    pyridine 120.02
    3-pentanone 101.06
    furfural 230.28
    n-dodecane 0.52
    diethylene glycol 61.65
    diisopropyl ether 4.85
    tert-amyl alcohol 29.47
    acetylacetone 184.7
    n-hexadecane 0.59
    acetophenone 47.65
    methyl propionate 112.74
    isopentyl acetate 27.25
    trichloroethylene 38.78
    n-nonanol 8.46
    cyclohexanol 28.69
    benzyl alcohol 27.75
    2-ethylhexanol 11.41
    isooctanol 8.25
    dipropyl ether 15.49
    1,2-dichlorobenzene 12.09
    ethyl lactate 24.52
    propylene carbonate 116.57
    n-methylformamide 301.25
    2-pentanol 16.76
    n-pentane 0.43
    1-propoxy-2-propanol 33.56
    1-methoxy-2-propyl acetate 45.37
    2-(2-methoxypropoxy) propanol 33.8
    mesitylene 2.02
    ε-caprolactone 157.93
    p-cymene 4.98
    epichlorohydrin 220.64
    1,1,1-trichloroethane 13.04
    2-aminoethanol 52.96
    morpholine-4-carbaldehyde 307.99
    sulfolane 276.5
    2,2,4-trimethylpentane 0.3
    2-methyltetrahydrofuran 136.61
    n-hexyl acetate 22.79
    isooctane 0.25
    2-(2-butoxyethoxy)ethanol 39.17
    sec-butyl acetate 22.89
    tert-butyl acetate 36.87
    decalin 0.63
    glycerin 54.99
    diglyme 90.35
    acrylic acid 74.4
    isopropyl myristate 10.88
    n-butyric acid 65.5
    acetyl acetate 67.8
    di(2-ethylhexyl) phthalate 14.69
    ethyl propionate 41.67
    nitromethane 536.78
    1,2-diethoxyethane 35.88
    benzonitrile 43.64
    trioctyl phosphate 10.63
    1-bromopropane 6.59
    gamma-valerolactone 525.22
    n-decanol 7.27
    triethyl phosphate 15.71
    4-methyl-2-pentanol 7.9
    propionitrile 100.77
    vinylene carbonate 97.03
    1,1,2-trichlorotrifluoroethane 73.32
    DMS 34.54
    cumene 2.67
    2-octanol 6.14
    2-hexanone 61.43
    octyl acetate 15.57
    limonene 7.52
    1,2-dimethoxyethane 168.83
    ethyl orthosilicate 13.03
    tributyl phosphate 12.09
    diacetone alcohol 62.58
    N,N-dimethylaniline 18.26
    acrylonitrile 155.86
    aniline 21.17
    1,3-propanediol 67.14
    bromobenzene 6.24
    dibromomethane 9.03
    1,1,2,2-tetrachloroethane 24.84
    2-methyl-cyclohexyl acetate 25.92
    tetrabutyl urea 21.43
    diisobutyl methanol 6.67
    2-phenylethanol 29.29
    styrene 3.99
    dioctyl adipate 20.67
    dimethyl sulfate 67.73
    ethyl butyrate 31.47
    methyl lactate 46.68
    butyl lactate 18.23
    diethyl carbonate 22.39
    propanediol butyl ether 25.85
    triethyl orthoformate 17.48
    p-tert-butyltoluene 4.56
    methyl 4-tert-butylbenzoate 29.76
    morpholine 304.05
    tert-butylamine 15.3
    n-dodecanol 5.95
    dimethoxymethane 151.7
    ethylene carbonate 80.41
    cyrene 65.14
    2-ethoxyethyl acetate 38.19
    2-ethylhexyl acetate 20.28
    1,2,4-trichlorobenzene 18.57
    4-methylpyridine 73.27
    dibutyl ether 9.37
    2,6-dimethyl-4-heptanol 6.67
    DEF 123.96
    dimethyl isosorbide 73.36
    tetrachloroethylene 12.97
    eugenol 31.34
    triacetin 35.78
    span 80 27.83
    1,4-butanediol 24.46
    1,1-dichloroethane 17.57
    2-methyl-1-pentanol 14.79
    methyl formate 235.05
    2-methyl-1-butanol 19.22
    n-decane 0.69
    butyronitrile 74.63
    3,7-dimethyl-1-octanol 8.77
    1-chlorooctane 2.97
    1-chlorotetradecane 1.79
    n-nonane 0.56
    undecane 0.6
    tert-butylcyclohexane 0.46
    cyclooctane 0.34
    cyclopentanol 60.62
    tetrahydropyran 157.57
    tert-amyl methyl ether 16.56
    2,5,8-trioxanonane 68.34
    1-hexene 2.12
    2-isopropoxyethanol 37.85
    2,2,2-trifluoroethanol 53.2
    methyl butyrate 69.04

    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