Trisodium pyrophosphate

Overview IFRA Request a quote

  • Identifiers

    CAS number
    14691-80-6

    Molecular formula
    HNa3O7P2

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

    Safety labels

    Corrosive
    Corrosive

    Irritant
    Irritant

  • Odor profile

    Fragrance
    Odorless 77.74%
    Clean 18.41%
    Sour 14.7%
    Sweet 14.15%
    Balsamic 13.08%
    Alcoholic 12.77%
    Savory 12.32%
    Fresh 11.98%
    Cooling 11.65%
    Ethereal 11.58%

     

    Flavor
    Odorless 66.24%
    Sour 30.3%
    Bland 23.61%
    Mild 21.65%
    Very mild 20.26%
    Vinegar 20.06%
    Yeast 19.57%
    Formyl 19.46%
    Mousy 18.81%
    Soy 18.69%

     

    Odor impact est.
    Low

  • Properties

    pKa est.
    1.11 (strong acid)

    Molecular weight
    243.92 g/mol

    Flash point

    • 190.3 ˚C est.

    Solubility expt.

    • Soluble in water

  • Synonyms

    • 14691-80-6
    • Trisodium diphosphate
    • AR7OGW33N1
    • DTXSID70872534
    • Trisodium pyrophosphate
    • RefChem:900574
    • DTXCID90820178
    • 238-735-6
    • Trisodium hydrogen diphosphate
    • Diphosphoric acid, trisodium salt
    • trisodium;[hydroxy(oxido)phosphoryl] phosphate
    • Sodium hydrogendiphosphate
    • trisodium;hydron;phosphonato phosphate
    • UNII-AR7OGW33N1
    • EINECS 238-735-6
    • DIPHOSPHORIC ACID TRISODIUM SALT
    • Diphosphoric acid, sodium salt (1:3)
    • Sodiumhydrogendiphosphate
    • HNa3O7P2
    • Sodium hydrogen diphosphate
    • EC 238-735-6
    • SCHEMBL121219
    • MLIKYFGFHUYZAL-UHFFFAOYSA-K
    • PAA69180
    • AKOS015910371
    • trisodium hydrogen (phosphonatooxy)phosphonate
    • Q17333553
    • 14691-80-6

  • Applications

    Trisodium pyrophosphate (CAS 14691-80-6) is commonly used as a buffering agent and a chelating agent to bind metal ions in cleaning formulations, where it also helps soften water and enhance detergent performance. It serves as a processing aid in papermaking and as a dispersant/deflocculant in ceramics and coatings to improve suspension and pigment stability. In textile processing it acts as a sequestrant to control metal ions and support dye performance. It can also be used as an additive in polymer and coating formulations to stabilize systems and adjust pH. Its use is subject to local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 1010.09
    methanol 2392.7
    isopropanol 860.0
    water 2136.99
    ethyl acetate 163.67
    n-propanol 697.48
    acetone 743.96
    n-butanol 600.72
    acetonitrile 312.3
    DMF 4104.31
    toluene 39.41
    isobutanol 407.89
    1,4-dioxane 338.39
    methyl acetate 196.64
    THF 1432.66
    2-butanone 344.08
    n-pentanol 375.92
    sec-butanol 499.83
    n-hexane 24.76
    ethylene glycol 1350.4
    NMP 1431.58
    cyclohexane 20.77
    DMSO 3371.21
    n-butyl acetate 88.24
    n-octanol 110.3
    chloroform 48.56
    n-propyl acetate 157.12
    acetic acid 327.5
    dichloromethane 74.81
    cyclohexanone 257.21
    propylene glycol 1163.59
    isopropyl acetate 145.17
    DMAc 1661.08
    2-ethoxyethanol 1167.95
    isopentanol 387.9
    n-heptane 23.15
    ethyl formate 291.91
    1,2-dichloroethane 100.6
    n-hexanol 221.26
    2-methoxyethanol 2397.82
    isobutyl acetate 74.25
    tetrachloromethane 21.33
    n-pentyl acetate 77.76
    transcutol 513.69
    n-heptanol 142.19
    ethylbenzene 27.07
    MIBK 253.66
    2-propoxyethanol 834.79
    tert-butanol 722.66
    MTBE 189.57
    2-butoxyethanol 449.73
    propionic acid 276.1
    o-xylene 43.34
    formic acid 885.47
    diethyl ether 239.73
    m-xylene 52.43
    p-xylene 29.31
    chlorobenzene 19.57
    dimethyl carbonate 379.08
    n-octane 10.12
    formamide 1518.48
    cyclopentanone 678.39
    2-pentanone 404.86
    anisole 108.53
    cyclopentyl methyl ether 363.96
    gamma-butyrolactone 615.45
    1-methoxy-2-propanol 2069.58
    pyridine 127.44
    3-pentanone 230.03
    furfural 443.02
    n-dodecane 7.14
    diethylene glycol 1111.92
    diisopropyl ether 76.52
    tert-amyl alcohol 435.38
    acetylacetone 367.28
    n-hexadecane 7.44
    acetophenone 118.7
    methyl propionate 300.94
    isopentyl acetate 60.11
    trichloroethylene 74.76
    n-nonanol 101.41
    cyclohexanol 239.08
    benzyl alcohol 157.99
    2-ethylhexanol 78.33
    isooctanol 90.9
    dipropyl ether 144.92
    1,2-dichlorobenzene 20.7
    ethyl lactate 301.74
    propylene carbonate 249.48
    n-methylformamide 1813.14
    2-pentanol 419.37
    n-pentane 44.57
    1-propoxy-2-propanol 495.83
    1-methoxy-2-propyl acetate 197.69
    2-(2-methoxypropoxy) propanol 305.81
    mesitylene 42.76
    ε-caprolactone 197.95
    p-cymene 23.79
    epichlorohydrin 494.35
    1,1,1-trichloroethane 42.38
    2-aminoethanol 1499.93
    morpholine-4-carbaldehyde 1023.94
    sulfolane 991.97
    2,2,4-trimethylpentane 12.1
    2-methyltetrahydrofuran 413.0
    n-hexyl acetate 83.68
    isooctane 12.95
    2-(2-butoxyethoxy)ethanol 428.63
    sec-butyl acetate 86.23
    tert-butyl acetate 167.97
    decalin 9.24
    glycerin 1764.27
    diglyme 540.07
    acrylic acid 288.43
    isopropyl myristate 47.97
    n-butyric acid 286.56
    acetyl acetate 82.3
    di(2-ethylhexyl) phthalate 53.47
    ethyl propionate 169.06
    nitromethane 682.86
    1,2-diethoxyethane 123.22
    benzonitrile 74.23
    trioctyl phosphate 62.64
    1-bromopropane 62.53
    gamma-valerolactone 727.6
    n-decanol 79.92
    triethyl phosphate 65.28
    4-methyl-2-pentanol 209.48
    propionitrile 261.56
    vinylene carbonate 178.11
    1,1,2-trichlorotrifluoroethane 432.08
    DMS 76.45
    cumene 25.14
    2-octanol 90.19
    2-hexanone 220.26
    octyl acetate 67.32
    limonene 32.75
    1,2-dimethoxyethane 986.35
    ethyl orthosilicate 58.37
    tributyl phosphate 56.41
    diacetone alcohol 470.9
    N,N-dimethylaniline 139.11
    acrylonitrile 322.19
    aniline 118.69
    1,3-propanediol 1238.95
    bromobenzene 13.03
    dibromomethane 50.01
    1,1,2,2-tetrachloroethane 92.98
    2-methyl-cyclohexyl acetate 65.44
    tetrabutyl urea 121.72
    diisobutyl methanol 62.01
    2-phenylethanol 120.37
    styrene 26.16
    dioctyl adipate 75.11
    dimethyl sulfate 594.35
    ethyl butyrate 102.72
    methyl lactate 656.01
    butyl lactate 153.31
    diethyl carbonate 64.72
    propanediol butyl ether 416.11
    triethyl orthoformate 78.89
    p-tert-butyltoluene 29.4
    methyl 4-tert-butylbenzoate 163.51
    morpholine 624.1
    tert-butylamine 341.96
    n-dodecanol 59.54
    dimethoxymethane 1809.77
    ethylene carbonate 175.55
    cyrene 395.45
    2-ethoxyethyl acetate 95.01
    2-ethylhexyl acetate 43.23
    1,2,4-trichlorobenzene 24.27
    4-methylpyridine 145.43
    dibutyl ether 59.14
    2,6-dimethyl-4-heptanol 62.01
    DEF 526.95
    dimethyl isosorbide 384.44
    tetrachloroethylene 60.21
    eugenol 227.16
    triacetin 93.8
    span 80 212.74
    1,4-butanediol 653.74
    1,1-dichloroethane 68.0
    2-methyl-1-pentanol 193.55
    methyl formate 1069.98
    2-methyl-1-butanol 337.99
    n-decane 10.22
    butyronitrile 250.07
    3,7-dimethyl-1-octanol 67.65
    1-chlorooctane 25.19
    1-chlorotetradecane 13.79
    n-nonane 10.49
    undecane 8.41
    tert-butylcyclohexane 9.3
    cyclooctane 13.34
    cyclopentanol 485.38
    tetrahydropyran 229.92
    tert-amyl methyl ether 184.18
    2,5,8-trioxanonane 442.04
    1-hexene 54.85
    2-isopropoxyethanol 580.38
    2,2,2-trifluoroethanol 354.27
    methyl butyrate 225.29

    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