Zinc formaldehyde sulfoxylate

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  • Identifiers

    CAS number
    64641-37-8

    Molecular formula
    C2H6O6S2Zn

    SMILES
    C(O)S(=O)[O-].C(O)S(=O)[O-].[Zn+2]

    Safety labels

    Irritant
    Irritant

    Health Hazard
    Health

  • Odor profile

    Fragrance
    Odorless 69.78%
    Sulfurous 36.9%
    Meaty 27.55%
    Savory 26.87%
    Cooked 20.44%
    Roasted 19.27%
    Onion 17.51%
    Alliaceous 16.79%
    Garlic 16.56%
    Pungent 16.16%

     

    Flavor
    Odorless 59.02%
    Mild 22.91%
    Sour 22.53%
    Bland 22.43%
    Formyl 20.93%
    Very mild 20.7%
    Sweet-like 20.67%
    Mousy 20.56%
    Yeast 20.13%
    Soy 19.75%

     

    Odor impact est.
    High

  • Properties

    pKa est.
    -0.01 (strong acid)

    Molecular weight
    255.6 g/mol

    Flash point

    • 102.57 ˚C est.

  • Synonyms

    • Zinc formaldehyde sulfoxylate
    • Zinc bis(hydroxymethanesulphinate)
    • K1G3Y1UQ6T
    • ZINC FORMALDEHYDE SULPHOXYLATE
    • Zinc, bis[(hydroxy-.kappa.O)methanesulfinato-.kappa.O]-, (T-4)-
    • METHANESULFINIC ACID, 1-HYDROXY-, ZINC SALT (2:1)
    • Zinc, bis((hydroxy-kappaO)methanesulfinato-kappaO)-, (T-4)-
    • ZINC, BIS((HYDROXY-.KAPPA.O)METHANESULFINATO-.KAPPA.O)-, (T-4)-
    • ZINC, BIS(1-(HYDROXY-.KAPPA.O)METHANESULFINATO-.KAPPA.O)-, (T-4)-
    • Zinc, bis(1-(hydroxy-kappaO)methanesulfinato-kappaO)-, (T-4)-
    • Zinc, bis[1-(hydroxy-.kappa.O)methanesulfinato-.kappa.O]-, (T-4)-
    • Zinc, bis[1-(hydroxy-kappaO)methanesulfinato-kappaO]-, (T-4)-
    • RefChem:904942
    • 64641-37-8
    • ZINC FORMALDEHYDE SULFOXYLATE [INCI]
    • 246-515-6
    • 613-643-2
    • 24887-06-7
    • zinc;hydroxymethanesulfinate
    • UNII-K1G3Y1UQ6T
    • EINECS 246-515-6
    • Bis(hydroxymethanesulfinato-O,O')zinc
    • SCHEMBL1929836
    • CAAIULQYGCAMCD-UHFFFAOYSA-L
    • Zinc, bis(hydroxymethanesulfinato-O,O')-
    • Q27281822
    • Zinc, bis(hydroxymethanesulfinato-OS,O1)-, (beta-4)-
    • ZINC, BIS(HYDROXYMETHANESULFINATO-OS,O1)-, (.BETA.-4)-
    • 24887-06-7

  • Applications

    Zinc formaldehyde sulfoxylate (CAS 64641-37-8) is used primarily as a reducing agent in industrial formulations, delivering sulfoxylate species under processing conditions. Typical applications include textile dyeing and finishing (reducing vat dyes and sulfur-containing dyes), decolorization steps in paper and pulp processing, and it can serve as an intermediate or reagent in the synthesis of sulfur-containing compounds. It may also function as a processing aid in coatings, inks, and adhesive formulations to control redox activity, with use subject to local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 174.73
    methanol 504.36
    isopropanol 84.24
    water 1126.72
    ethyl acetate 21.52
    n-propanol 83.99
    acetone 190.54
    n-butanol 61.54
    acetonitrile 96.86
    DMF 882.95
    toluene 5.4
    isobutanol 41.42
    1,4-dioxane 83.28
    methyl acetate 46.72
    THF 67.6
    2-butanone 54.54
    n-pentanol 40.85
    sec-butanol 47.39
    n-hexane 2.56
    ethylene glycol 288.33
    NMP 369.08
    cyclohexane 8.2
    DMSO 1165.12
    n-butyl acetate 16.2
    n-octanol 23.52
    chloroform 11.29
    n-propyl acetate 20.15
    acetic acid 284.14
    dichloromethane 28.11
    cyclohexanone 61.97
    propylene glycol 112.47
    isopropyl acetate 14.39
    DMAc 385.7
    2-ethoxyethanol 177.35
    isopentanol 41.06
    n-heptane 6.04
    ethyl formate 66.58
    1,2-dichloroethane 29.82
    n-hexanol 23.16
    2-methoxyethanol 341.75
    isobutyl acetate 7.76
    tetrachloromethane 3.41
    n-pentyl acetate 16.73
    transcutol 250.28
    n-heptanol 20.5
    ethylbenzene 4.22
    MIBK 19.05
    2-propoxyethanol 71.48
    tert-butanol 78.49
    MTBE 22.79
    2-butoxyethanol 58.12
    propionic acid 85.46
    o-xylene 8.41
    formic acid 674.59
    diethyl ether 27.49
    m-xylene 5.14
    p-xylene 5.47
    chlorobenzene 5.61
    dimethyl carbonate 35.21
    n-octane 3.0
    formamide 863.39
    cyclopentanone 72.8
    2-pentanone 38.02
    anisole 18.31
    cyclopentyl methyl ether 23.71
    gamma-butyrolactone 85.06
    1-methoxy-2-propanol 153.01
    pyridine 47.6
    3-pentanone 26.62
    furfural 145.54
    n-dodecane 2.44
    diethylene glycol 149.89
    diisopropyl ether 7.47
    tert-amyl alcohol 51.49
    acetylacetone 58.93
    n-hexadecane 2.53
    acetophenone 31.87
    methyl propionate 32.07
    isopentyl acetate 11.78
    trichloroethylene 31.08
    n-nonanol 20.33
    cyclohexanol 41.81
    benzyl alcohol 35.01
    2-ethylhexanol 12.75
    isooctanol 14.74
    dipropyl ether 16.36
    1,2-dichlorobenzene 7.79
    ethyl lactate 31.63
    propylene carbonate 31.89
    n-methylformamide 434.93
    2-pentanol 31.19
    n-pentane 5.24
    1-propoxy-2-propanol 48.62
    1-methoxy-2-propyl acetate 22.5
    2-(2-methoxypropoxy) propanol 66.49
    mesitylene 5.3
    ε-caprolactone 47.89
    p-cymene 6.31
    epichlorohydrin 62.01
    1,1,1-trichloroethane 6.44
    2-aminoethanol 219.18
    morpholine-4-carbaldehyde 338.31
    sulfolane 193.56
    2,2,4-trimethylpentane 2.21
    2-methyltetrahydrofuran 34.29
    n-hexyl acetate 19.76
    isooctane 1.5
    2-(2-butoxyethoxy)ethanol 90.33
    sec-butyl acetate 9.04
    tert-butyl acetate 16.3
    decalin 2.41
    glycerin 229.32
    diglyme 179.23
    acrylic acid 134.5
    isopropyl myristate 9.72
    n-butyric acid 58.44
    acetyl acetate 18.9
    di(2-ethylhexyl) phthalate 16.04
    ethyl propionate 14.72
    nitromethane 486.25
    1,2-diethoxyethane 40.52
    benzonitrile 23.46
    trioctyl phosphate 12.37
    1-bromopropane 9.15
    gamma-valerolactone 155.33
    n-decanol 15.97
    triethyl phosphate 11.56
    4-methyl-2-pentanol 15.79
    propionitrile 34.77
    vinylene carbonate 41.92
    1,1,2-trichlorotrifluoroethane 104.67
    DMS 18.64
    cumene 4.21
    2-octanol 14.14
    2-hexanone 23.43
    octyl acetate 14.49
    limonene 9.9
    1,2-dimethoxyethane 194.69
    ethyl orthosilicate 10.35
    tributyl phosphate 13.0
    diacetone alcohol 50.13
    N,N-dimethylaniline 25.66
    acrylonitrile 78.57
    aniline 21.76
    1,3-propanediol 185.79
    bromobenzene 3.6
    dibromomethane 14.97
    1,1,2,2-tetrachloroethane 26.45
    2-methyl-cyclohexyl acetate 13.79
    tetrabutyl urea 32.11
    diisobutyl methanol 10.97
    2-phenylethanol 20.3
    styrene 5.83
    dioctyl adipate 21.02
    dimethyl sulfate 87.71
    ethyl butyrate 16.13
    methyl lactate 63.71
    butyl lactate 27.96
    diethyl carbonate 11.52
    propanediol butyl ether 72.52
    triethyl orthoformate 14.4
    p-tert-butyltoluene 5.91
    methyl 4-tert-butylbenzoate 37.02
    morpholine 114.53
    tert-butylamine 35.8
    n-dodecanol 13.02
    dimethoxymethane 172.07
    ethylene carbonate 30.8
    cyrene 72.88
    2-ethoxyethyl acetate 27.38
    2-ethylhexyl acetate 8.42
    1,2,4-trichlorobenzene 9.69
    4-methylpyridine 35.85
    dibutyl ether 15.34
    2,6-dimethyl-4-heptanol 10.97
    DEF 102.82
    dimethyl isosorbide 69.34
    tetrachloroethylene 26.39
    eugenol 48.26
    triacetin 36.38
    span 80 50.48
    1,4-butanediol 110.97
    1,1-dichloroethane 9.98
    2-methyl-1-pentanol 27.13
    methyl formate 273.6
    2-methyl-1-butanol 36.76
    n-decane 3.32
    butyronitrile 31.28
    3,7-dimethyl-1-octanol 16.09
    1-chlorooctane 6.78
    1-chlorotetradecane 3.85
    n-nonane 3.39
    undecane 2.74
    tert-butylcyclohexane 1.52
    cyclooctane 3.57
    cyclopentanol 45.13
    tetrahydropyran 33.93
    tert-amyl methyl ether 20.08
    2,5,8-trioxanonane 138.99
    1-hexene 5.13
    2-isopropoxyethanol 75.04
    2,2,2-trifluoroethanol 152.42
    methyl butyrate 28.5

    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