Sodium Diacetate

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  • Identifiers

    CAS number
    126-96-5

    Molecular formula
    C4H7NaO4

    SMILES
    CC(=O)O.CC(=O)[O-].[Na+]

    Safety labels

    Corrosive
    Corrosive

  • Odor profile

    Fragrance
    Sour 68.08%
    Sharp 57.49%
    Pungent 55.59%
    Odorless 46.14%
    Cheesy 39.7%
    Dairy 30.78%
    Burnt 30.77%
    Milky 29.49%
    Sweaty 29.2%
    Caramellic 25.8%

     

    Flavor
    Pungent 57.23%
    Vinegar 56.69%
    Sharp 49.61%
    Sour 48.79%
    Odorless 41.69%
    Acidic 37.21%
    Rancid 35.91%
    Formyl 25.16%
    Soy 25.1%
    Mousy 24.53%

     

    Odor impact est.
    High

  • Properties

    pKa est.
    9.57 (weak base)

    Molecular weight
    142.09 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra fast

    Boiling point est.
    117°C

    Flash point

    • 47.39 ˚C est.

    Solubility expt.

    • SOLUBILITY IN WATER: 1 G/ML
    • Slightly soluble in alcohol; insoluble in ether

  • Synonyms

    • SODIUM DIACETATE
    • 126-96-5
    • Acetic acid, sodium salt (2:1)
    • Sodium hydrogen diacetate
    • Dykon
    • Acid acetate
    • Sodium acid acetate
    • Sodium acetate, acid
    • Sodium hydrogen acetate
    • Sodium acetate (1:2)
    • Acetic acid dimer, sodium salt
    • HSDB 736
    • UNII-26WJH3CS0B
    • EINECS 204-814-9
    • 26WJH3CS0B
    • sodium;acetic acid;acetate
    • SODIUM DIACETATE [MI]
    • SODIUM DIACETATE [FCC]
    • INS NO.262(II)
    • SODIUM DIACETATE [FHFI]
    • SODIUM DIACETATE [HSDB]
    • DTXSID3034909
    • INS-262(II)
    • SODIUM DIACETATE [MART.]
    • EC 204-814-9
    • E-262(II)
    • SODIUM DIACETATE (MART.)
    • Sodium hydrogen di(acetate)
    • AcOH AcONa
    • AcONa AcOH
    • HOAc NaOAc
    • NaOAc HOAc
    • sodium acetate acetate
    • CH3COONa CH3COOH
    • acetic acid sodium acetate
    • sodium acetate acetic acid
    • sodium acetate-acetic acid
    • SCHEMBL41629
    • sodium acetate ion acetic acid
    • DTXCID1014909
    • AAA12696
    • AKOS024432562
    • MSK2521-1000W
    • USEPA/OPP Pesticide Code: 044008
    • Sodium diacetate Solution in Water, 1000ug/mL
    • Q409655
    • Acetic acid, sodium salt, compd.with acetic acid (1:1)
    • ACETIC ACID, SODIUM SALT, COMPD WITH ACETIC ACID (1:1)
    • 204-814-9

  • Applications

    Sodium diacetate is widely used in the food industry as an acidulant, preservative and mild flavoring agent; it releases acetic acid under moisture, helping inhibit microbial growth and extend shelf life in dry bakery products, processed meats, snacks, sauces and seasonings. It also serves as a preservative and acidifying ingredient in animal feeds and pet foods. In industrial manufacturing, it is used as a chemical intermediate and a source of acetate for various syntheses, and it can function as a controlled-release acidulant in formulations that require a tangy component. It is subject to local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 315.87
    methanol 669.41
    isopropanol 200.77
    water 3231.57
    ethyl acetate 46.15
    n-propanol 162.38
    acetone 218.74
    n-butanol 104.17
    acetonitrile 123.75
    DMF 963.22
    toluene 5.67
    isobutanol 97.12
    1,4-dioxane 158.45
    methyl acetate 87.17
    THF 171.54
    2-butanone 76.53
    n-pentanol 67.7
    sec-butanol 98.45
    n-hexane 5.08
    ethylene glycol 621.18
    NMP 331.42
    cyclohexane 2.65
    DMSO 376.04
    n-butyl acetate 21.64
    n-octanol 34.09
    chloroform 14.61
    n-propyl acetate 35.66
    acetic acid 354.23
    dichloromethane 18.98
    cyclohexanone 56.02
    propylene glycol 445.24
    isopropyl acetate 28.22
    DMAc 575.52
    2-ethoxyethanol 269.33
    isopentanol 67.45
    n-heptane 3.79
    ethyl formate 100.7
    1,2-dichloroethane 16.4
    n-hexanol 41.97
    2-methoxyethanol 528.43
    isobutyl acetate 22.95
    tetrachloromethane 6.94
    n-pentyl acetate 21.18
    transcutol 219.9
    n-heptanol 30.78
    ethylbenzene 4.89
    MIBK 31.57
    2-propoxyethanol 179.02
    tert-butanol 171.38
    MTBE 47.35
    2-butoxyethanol 100.18
    propionic acid 169.69
    o-xylene 8.25
    formic acid 695.4
    diethyl ether 40.97
    m-xylene 7.2
    p-xylene 6.91
    chlorobenzene 5.71
    dimethyl carbonate 89.98
    n-octane 1.82
    formamide 590.16
    cyclopentanone 94.82
    2-pentanone 51.04
    anisole 30.85
    cyclopentyl methyl ether 46.49
    gamma-butyrolactone 137.44
    1-methoxy-2-propanol 310.16
    pyridine 40.77
    3-pentanone 35.69
    furfural 161.19
    n-dodecane 2.0
    diethylene glycol 297.13
    diisopropyl ether 12.16
    tert-amyl alcohol 95.45
    acetylacetone 65.79
    n-hexadecane 2.0
    acetophenone 31.41
    methyl propionate 69.06
    isopentyl acetate 17.5
    trichloroethylene 19.98
    n-nonanol 29.65
    cyclohexanol 48.29
    benzyl alcohol 45.43
    2-ethylhexanol 18.07
    isooctanol 22.52
    dipropyl ether 25.41
    1,2-dichlorobenzene 6.56
    ethyl lactate 64.89
    propylene carbonate 69.57
    n-methylformamide 462.29
    2-pentanol 51.24
    n-pentane 5.1
    1-propoxy-2-propanol 92.56
    1-methoxy-2-propyl acetate 41.51
    2-(2-methoxypropoxy) propanol 91.08
    mesitylene 6.13
    ε-caprolactone 62.1
    p-cymene 5.72
    epichlorohydrin 92.21
    1,1,1-trichloroethane 11.11
    2-aminoethanol 521.12
    morpholine-4-carbaldehyde 400.06
    sulfolane 145.86
    2,2,4-trimethylpentane 3.08
    2-methyltetrahydrofuran 68.43
    n-hexyl acetate 31.57
    isooctane 2.49
    2-(2-butoxyethoxy)ethanol 118.36
    sec-butyl acetate 19.45
    tert-butyl acetate 28.63
    decalin 2.31
    glycerin 685.34
    diglyme 197.09
    acrylic acid 201.36
    isopropyl myristate 14.04
    n-butyric acid 101.22
    acetyl acetate 31.54
    di(2-ethylhexyl) phthalate 22.75
    ethyl propionate 35.78
    nitromethane 382.51
    1,2-diethoxyethane 40.39
    benzonitrile 24.72
    trioctyl phosphate 17.42
    1-bromopropane 8.01
    gamma-valerolactone 209.03
    n-decanol 22.37
    triethyl phosphate 17.24
    4-methyl-2-pentanol 30.64
    propionitrile 58.67
    vinylene carbonate 69.55
    1,1,2-trichlorotrifluoroethane 146.35
    DMS 35.6
    cumene 5.79
    2-octanol 18.68
    2-hexanone 35.46
    octyl acetate 21.99
    limonene 7.64
    1,2-dimethoxyethane 274.71
    ethyl orthosilicate 16.8
    tributyl phosphate 19.32
    diacetone alcohol 77.88
    N,N-dimethylaniline 32.29
    acrylonitrile 91.53
    aniline 30.74
    1,3-propanediol 346.39
    bromobenzene 2.97
    dibromomethane 9.3
    1,1,2,2-tetrachloroethane 19.32
    2-methyl-cyclohexyl acetate 17.77
    tetrabutyl urea 31.19
    diisobutyl methanol 12.12
    2-phenylethanol 29.38
    styrene 5.33
    dioctyl adipate 25.98
    dimethyl sulfate 127.25
    ethyl butyrate 22.23
    methyl lactate 140.01
    butyl lactate 37.68
    diethyl carbonate 19.25
    propanediol butyl ether 128.3
    triethyl orthoformate 21.63
    p-tert-butyltoluene 6.04
    methyl 4-tert-butylbenzoate 43.21
    morpholine 197.67
    tert-butylamine 75.57
    n-dodecanol 17.2
    dimethoxymethane 283.93
    ethylene carbonate 58.86
    cyrene 99.18
    2-ethoxyethyl acetate 34.22
    2-ethylhexyl acetate 12.71
    1,2,4-trichlorobenzene 8.97
    4-methylpyridine 44.65
    dibutyl ether 18.07
    2,6-dimethyl-4-heptanol 12.12
    DEF 109.17
    dimethyl isosorbide 86.16
    tetrachloroethylene 17.05
    eugenol 62.95
    triacetin 45.09
    span 80 76.25
    1,4-butanediol 190.56
    1,1-dichloroethane 14.19
    2-methyl-1-pentanol 41.88
    methyl formate 339.09
    2-methyl-1-butanol 63.67
    n-decane 2.87
    butyronitrile 46.48
    3,7-dimethyl-1-octanol 22.76
    1-chlorooctane 7.32
    1-chlorotetradecane 4.12
    n-nonane 2.64
    undecane 2.32
    tert-butylcyclohexane 3.09
    cyclooctane 1.49
    cyclopentanol 87.25
    tetrahydropyran 56.36
    tert-amyl methyl ether 36.5
    2,5,8-trioxanonane 148.55
    1-hexene 10.88
    2-isopropoxyethanol 134.06
    2,2,2-trifluoroethanol 253.46
    methyl butyrate 48.62

    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