Sulfamic acid

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  • Identifiers

    CAS number
    5329-14-6

    Molecular formula
    H3NO3S

    SMILES
    NS(=O)(=O)O

    Safety labels

    Irritant
    Irritant

  • Odor profile

    Fragrance
    Odorless 89.23%
    Sulfurous 19.71%
    Pungent 17.61%
    Cooked 16.2%
    Savory 15.84%
    Garlic 12.04%
    Onion 11.66%
    Clean 11.49%
    Roasted 11.38%
    Burnt 11.11%

     

    Flavor
    Bitter 74.28%
    Odorless 39.47%
    Bland 26.53%
    Formyl 21.24%
    Nitrile 19.71%
    Rotten 19.69%
    Mousy 19.18%
    Sulfur 19.13%
    Urine 18.26%
    Decomposing cabbage 18.06%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    -1.6

    pKa est.
    8.18 (weak base)

    Molecular weight
    97.1 g/mol

    Melting point expt.

    • Melting point equals 205 °C
    • 205 °C

    Boiling point

    • DECOMP @ BOILING POINT

    Flash point

    • 195.59 ˚C est.

    Solubility expt.

    • SPARINGLY SOL IN ALC, METHANOL; SLIGHTLY SOL IN ACETONE; INSOL IN ETHER; FREELY SOL IN NITROGENOUS BASES AND IN NITROGEN CONTAINING ORG SOLVENTS
    • INSOL IN CARBON DISULFIDE & CARBON TETRACHLORIDE
    • 12.8 wt% in water at 0 °C; 17.57 wt% in water at 20 °C; 22.77 wt% in water at 40 °C; 0.1667 wt% in formamide at 25 °C; 0.0412 wt% in methanol at 25 °C; 0.0167 wt% in ethanol (2% benzene) at 25 °C; 0.0040 wt% in acetone at 25 °C; 0.0001 wt% in ether at 25 °C
    • water solubility = 1.47X10+5 mg/l @ 0 °C
    • 147 mg/mL at 0 °C
    • Solubility in water at 20 °C: freely soluble

  • Synonyms

    • SULFAMIC ACID
    • 5329-14-6
    • Amidosulfonic acid
    • Sulphamic acid
    • Amidosulfuric acid
    • Aminosulfonic acid
    • Imidosulfonic acid
    • Sulfamidic acid
    • Sulfaminic acid
    • Jumbo
    • Aminosulfuric acid
    • Sulphamidic acid
    • Kyselina sulfaminova
    • Kyselina amidosulfonova
    • Caswell No. 809
    • sulfuramidic acid
    • NSC 1871
    • Sulfamidsaeure
    • HSDB 795
    • amidohydroxidodioxidosulfur
    • Amidoschwefelsaeure
    • EINECS 226-218-8
    • MFCD00011603
    • EPA Pesticide Chemical Code 078101
    • UNII-9NFU33906Q
    • CHEBI:9330
    • DTXSID6034005
    • AI3-15024
    • 9NFU33906Q
    • NSC-1871
    • H2NSO3H
    • CHEMBL68253
    • DTXCID4014005
    • [S(NH2)O2(OH)]
    • EC 226-218-8
    • (S(NH2)O2(OH))
    • Kyselina sulfaminova [Czech]
    • CAS-5329-14-6
    • Kyselina amidosulfonova [Czech]
    • UN2967
    • SULFAMIC ACID, ACS
    • SULFAMIC ACID, REAG
    • Sulphamic-acid-
    • amidosulphuric acid
    • Sulfamic acid [UN2967] [Corrosive]
    • SCALE CLEEN
    • ALPROJET W
    • AMINESULFONIC ACID
    • WLN: ZSWQ
    • NH2SO3H
    • Sulfamic acid, ACS grade
    • SULFAMIC ACID [MI]
    • NCIOpen2_000675
    • SULFAMIC ACID [HSDB]
    • BDBM26994
    • NSC1871
    • Sulfamic acid, p.a., 99.5%
    • Sulfamic acid, analytical standard
    • Sulfamic acid, reagent grade, 98%
    • Tox21_201905
    • Tox21_303482
    • MSK000600
    • STL282725
    • 7773-06-0 (mono-ammonium salt)
    • AKOS005287325
    • Sulfamic acid, ACS reagent, 99.3%
    • UN 2967
    • NCGC00090927-01
    • NCGC00090927-02
    • NCGC00257489-01
    • NCGC00259454-01
    • Sulfamic acid [UN2967] [Corrosive]
    • Sulfamic acid, ReagentPlus(R), >=99%
    • FS164108
    • Sulfamic acid, >=99.5% (alkalimetric)
    • NS00003168
    • Sulfamic acid, 99.999% trace metals basis
    • Sulfamic acid, SAJ first grade, >=99.0%
    • Sulfamic acid, JIS special grade, >=99.5%
    • Q412304
    • Sulfamic acid, analytical standard (for acidimetry), ACS reagent
    • 226-218-8

  • Applications

    Sulfamic acid (CAS 5329-14-6) is a solid, non-volatile acid widely used as a descaling and cleaning agent in industrial and household settings. In industry, it efficiently removes lime scale and mineral deposits from boilers, heat exchangers, and process lines, and serves as a rust-removing and surface-cleaning agent in metal finishing and maintenance. It also acts as a catalyst and acid source for selected organic syntheses, notably esterification and related reactions, in laboratory and production contexts. In electronics and coatings applications, it appears in non-oxidizing cleaners and surface-prep formulations for copper and other metals. For the food and dairy processing sector, it is employed in equipment cleaning formulations and on food-contact surfaces under appropriate regulatory guidance. It may also be used in household descalers for kettles and dishwashers. Subject to local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 48.0
    methanol 121.67
    isopropanol 27.5
    water 322.67
    ethyl acetate 7.78
    n-propanol 23.32
    acetone 60.78
    n-butanol 13.61
    acetonitrile 26.35
    DMF 361.81
    toluene 2.19
    isobutanol 13.17
    1,4-dioxane 33.82
    methyl acetate 15.8
    THF 49.69
    2-butanone 16.51
    n-pentanol 8.7
    sec-butanol 11.65
    n-hexane 0.96
    ethylene glycol 100.5
    NMP 128.78
    cyclohexane 1.32
    DMSO 209.31
    n-butyl acetate 6.81
    n-octanol 3.29
    chloroform 1.23
    n-propyl acetate 7.04
    acetic acid 53.8
    dichloromethane 2.4
    cyclohexanone 14.54
    propylene glycol 60.73
    isopropyl acetate 5.42
    DMAc 163.91
    2-ethoxyethanol 49.36
    isopentanol 8.45
    n-heptane 1.26
    ethyl formate 19.27
    1,2-dichloroethane 3.31
    n-hexanol 7.53
    2-methoxyethanol 124.21
    isobutyl acetate 4.04
    tetrachloromethane 0.84
    n-pentyl acetate 4.31
    transcutol 29.78
    n-heptanol 5.27
    ethylbenzene 1.15
    MIBK 7.14
    2-propoxyethanol 43.56
    tert-butanol 19.2
    MTBE 5.81
    2-butoxyethanol 23.47
    propionic acid 23.32
    o-xylene 2.48
    formic acid 136.88
    diethyl ether 8.51
    m-xylene 1.99
    p-xylene 1.72
    chlorobenzene 1.1
    dimethyl carbonate 23.46
    n-octane 0.45
    formamide 178.95
    cyclopentanone 30.96
    2-pentanone 12.03
    anisole 5.39
    cyclopentyl methyl ether 11.62
    gamma-butyrolactone 36.21
    1-methoxy-2-propanol 69.22
    pyridine 13.81
    3-pentanone 9.05
    furfural 43.62
    n-dodecane 0.3
    diethylene glycol 70.16
    diisopropyl ether 2.17
    tert-amyl alcohol 9.43
    acetylacetone 18.59
    n-hexadecane 0.31
    acetophenone 7.05
    methyl propionate 14.53
    isopentyl acetate 4.61
    trichloroethylene 2.99
    n-nonanol 3.1
    cyclohexanol 7.0
    benzyl alcohol 7.83
    2-ethylhexanol 3.31
    isooctanol 3.32
    dipropyl ether 7.02
    1,2-dichlorobenzene 1.05
    ethyl lactate 14.42
    propylene carbonate 15.56
    n-methylformamide 139.2
    2-pentanol 6.83
    n-pentane 1.22
    1-propoxy-2-propanol 24.69
    1-methoxy-2-propyl acetate 12.68
    2-(2-methoxypropoxy) propanol 16.5
    mesitylene 1.74
    ε-caprolactone 12.49
    p-cymene 1.62
    epichlorohydrin 19.44
    1,1,1-trichloroethane 1.43
    2-aminoethanol 85.32
    morpholine-4-carbaldehyde 110.05
    sulfolane 54.44
    2,2,4-trimethylpentane 0.38
    2-methyltetrahydrofuran 13.53
    n-hexyl acetate 3.81
    isooctane 0.32
    2-(2-butoxyethoxy)ethanol 20.26
    sec-butyl acetate 3.38
    tert-butyl acetate 5.64
    decalin 0.44
    glycerin 118.86
    diglyme 44.5
    acrylic acid 34.79
    isopropyl myristate 2.0
    n-butyric acid 14.5
    acetyl acetate 6.05
    di(2-ethylhexyl) phthalate 3.97
    ethyl propionate 6.84
    nitromethane 94.11
    1,2-diethoxyethane 7.59
    benzonitrile 4.76
    trioctyl phosphate 3.32
    1-bromopropane 1.52
    gamma-valerolactone 56.19
    n-decanol 2.51
    triethyl phosphate 5.23
    4-methyl-2-pentanol 3.82
    propionitrile 10.4
    vinylene carbonate 14.35
    1,1,2-trichlorotrifluoroethane 30.43
    DMS 6.58
    cumene 1.08
    2-octanol 2.44
    2-hexanone 7.4
    octyl acetate 3.04
    limonene 2.04
    1,2-dimethoxyethane 62.18
    ethyl orthosilicate 4.55
    tributyl phosphate 3.38
    diacetone alcohol 16.48
    N,N-dimethylaniline 7.15
    acrylonitrile 19.0
    aniline 7.0
    1,3-propanediol 54.59
    bromobenzene 0.64
    dibromomethane 1.35
    1,1,2,2-tetrachloroethane 3.02
    2-methyl-cyclohexyl acetate 4.77
    tetrabutyl urea 7.41
    diisobutyl methanol 2.36
    2-phenylethanol 6.55
    styrene 1.26
    dioctyl adipate 4.21
    dimethyl sulfate 37.89
    ethyl butyrate 6.59
    methyl lactate 33.7
    butyl lactate 9.63
    diethyl carbonate 5.46
    propanediol butyl ether 19.78
    triethyl orthoformate 6.32
    p-tert-butyltoluene 1.64
    methyl 4-tert-butylbenzoate 9.84
    morpholine 45.99
    tert-butylamine 8.7
    n-dodecanol 2.02
    dimethoxymethane 92.64
    ethylene carbonate 12.07
    cyrene 25.69
    2-ethoxyethyl acetate 7.08
    2-ethylhexyl acetate 3.49
    1,2,4-trichlorobenzene 1.39
    4-methylpyridine 10.26
    dibutyl ether 2.24
    2,6-dimethyl-4-heptanol 2.36
    DEF 27.26
    dimethyl isosorbide 25.39
    tetrachloroethylene 2.68
    eugenol 15.03
    triacetin 7.83
    span 80 12.14
    1,4-butanediol 27.92
    1,1-dichloroethane 1.89
    2-methyl-1-pentanol 4.5
    methyl formate 97.25
    2-methyl-1-butanol 8.18
    n-decane 0.42
    butyronitrile 8.58
    3,7-dimethyl-1-octanol 2.26
    1-chlorooctane 0.82
    1-chlorotetradecane 0.5
    n-nonane 0.43
    undecane 0.34
    tert-butylcyclohexane 0.36
    cyclooctane 0.67
    cyclopentanol 14.84
    tetrahydropyran 11.18
    tert-amyl methyl ether 5.0
    2,5,8-trioxanonane 33.93
    1-hexene 1.79
    2-isopropoxyethanol 22.44
    2,2,2-trifluoroethanol 40.99
    methyl butyrate 9.94

    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