Sodium Trimetaphosphate

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  • Identifiers

    CAS number
    7785-84-4

    Molecular formula
    Na3O9P3

    SMILES
    [O-]P1(=O)OP(=O)(OP(=O)(O1)[O-])[O-].[Na+].[Na+].[Na+]

    Safety labels

  • Odor profile

    Fragrance
    Odorless 81.14%
    Sweet 15.33%
    Clean 14.71%
    Sour 13.84%
    Sharp 11.8%
    Burnt 11.71%
    Ethereal 10.97%
    Nutty 10.61%
    Aromatic 9.91%
    Cooked 9.81%

     

    Flavor
    Odorless 44.09%
    Sour 22.88%
    Formyl 19.82%
    Bitter 19.57%
    Rotten 18.95%
    Mousy 18.83%
    Soy 18.57%
    Urine 18.49%
    Yeast 18.38%
    Stinky 18.33%

     

    Odor impact est.
    Low

  • Properties

    pKa est.
    2.25 (strong acid)

    Molecular weight
    305.89 g/mol

    Flash point

    • 199.63 ˚C est.

  • Synonyms

    • SODIUM TRIMETAPHOSPHATE
    • 7785-84-4
    • Trisodium trimetaphosphate
    • Trisodium metaphosphate
    • Cyclic sodium trimetaphosphate
    • Sodium phosphate ((NaPO3)3)
    • Metaphosphoric acid, trisodium salt
    • Sodium metaphosphate (Na3(P3O9))
    • Trisodium trimetaphosphate (Na3P3O9)
    • Cyclisches trinatriummetaphosphat
    • 3IH6169RL0
    • Metaphosphoric acid (H3P3O9), trisodium salt
    • Trimetaphosphoric acid (H3P3O9), trisodium salt
    • DTXSID7052789
    • RefChem:184143
    • DTXCID3031365
    • 232-088-3
    • Sodium phosphate tribasic
    • Sodium trimetaphosphate [USAN]
    • MFCD00867826
    • trisodium;2,4,6-trioxido-1,3,5,2lambda5,4lambda5,6lambda5-trioxatriphosphinane 2,4,6-trioxide
    • Sodium trimetaphosphate (USAN)
    • Detoxol
    • Sodiumtrimetaphosphate
    • HSDB 5048
    • EINECS 232-088-3
    • Cyclisches trinatriummetaphosphat [German]
    • UNII-3IH6169RL0
    • CCRIS 8524
    • 1,3,5,2,4,6-Trioxatriphosphorinane, 2,4,6-trihydroxy-, trisodium salt
    • Na3O9P3
    • EC 232-088-3
    • SCHEMBL1499247
    • CHEMBL2107557
    • SODIUM TRIMETAPHOSPHATE [II]
    • SODIUM TRIMETAPHOSPHATE [MI]
    • SODIUM TRIMETAPHOSPHATE [FCC]
    • SODIUM TRIMETAPHOSPHATE [HSDB]
    • SODIUM TRIMETAPHOSPHATE [VANDF]
    • NS00131907
    • D02423
    • E75943
    • Metaphosphoric acid (H3P3O9), sodium salt (1:3)
    • Q7553388
    • Trisodium 2,4,6-trioxo-1,3,5,2lambda~5~,4lambda~5~,6lambda~5~-trioxatriphosphinane-2,4,6-tris(olate)
    • 7785-84-4

  • Applications

    Sodium trimetaphosphate is widely used as a sequestrant and chelating agent to bind polyvalent metal ions, helping prevent scale and precipitation in diverse formulations. It functions as a water-conditioning additive in detergents and cleaners, and as a processing aid in textiles and paper by dispersing pigments and preventing aggregation of particles. Additionally, it acts as a crosslinking agent for starches used in adhesives and paper coatings, and serves as a stabilizer and dispersant in coatings and inks. In ceramics and glass manufacturing, it can serve as a deflocculant and a binder precursor in slips and glazes. These uses are subject to local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 281.24
    methanol 637.09
    isopropanol 238.6
    water 871.61
    ethyl acetate 140.4
    n-propanol 190.93
    acetone 321.71
    n-butanol 152.34
    acetonitrile 200.06
    DMF 994.96
    toluene 40.28
    isobutanol 124.72
    1,4-dioxane 210.62
    methyl acetate 151.81
    THF 552.08
    2-butanone 172.72
    n-pentanol 86.32
    sec-butanol 153.98
    n-hexane 16.38
    ethylene glycol 253.99
    NMP 517.4
    cyclohexane 17.04
    DMSO 1084.84
    n-butyl acetate 67.39
    n-octanol 54.77
    chloroform 104.07
    n-propyl acetate 91.77
    acetic acid 104.16
    dichloromethane 123.87
    cyclohexanone 120.78
    propylene glycol 184.3
    isopropyl acetate 112.16
    DMAc 685.73
    2-ethoxyethanol 287.42
    isopentanol 107.87
    n-heptane 16.03
    ethyl formate 162.6
    1,2-dichloroethane 103.3
    n-hexanol 83.7
    2-methoxyethanol 632.49
    isobutyl acetate 45.5
    tetrachloromethane 41.34
    n-pentyl acetate 48.68
    transcutol 122.5
    n-heptanol 62.99
    ethylbenzene 21.62
    MIBK 125.55
    2-propoxyethanol 302.9
    tert-butanol 238.58
    MTBE 109.05
    2-butoxyethanol 149.3
    propionic acid 106.9
    o-xylene 37.35
    formic acid 263.99
    diethyl ether 190.29
    m-xylene 41.04
    p-xylene 24.79
    chlorobenzene 24.48
    dimethyl carbonate 262.69
    n-octane 8.43
    formamide 470.04
    cyclopentanone 267.91
    2-pentanone 194.66
    anisole 69.29
    cyclopentyl methyl ether 203.25
    gamma-butyrolactone 304.56
    1-methoxy-2-propanol 538.22
    pyridine 95.79
    3-pentanone 147.03
    furfural 204.66
    n-dodecane 6.4
    diethylene glycol 325.28
    diisopropyl ether 62.66
    tert-amyl alcohol 152.49
    acetylacetone 187.85
    n-hexadecane 6.65
    acetophenone 71.57
    methyl propionate 215.85
    isopentyl acetate 44.36
    trichloroethylene 87.65
    n-nonanol 49.15
    cyclohexanol 89.13
    benzyl alcohol 63.21
    2-ethylhexanol 39.83
    isooctanol 41.55
    dipropyl ether 93.73
    1,2-dichlorobenzene 27.06
    ethyl lactate 118.71
    propylene carbonate 147.83
    n-methylformamide 511.85
    2-pentanol 121.89
    n-pentane 28.0
    1-propoxy-2-propanol 195.94
    1-methoxy-2-propyl acetate 132.61
    2-(2-methoxypropoxy) propanol 104.75
    mesitylene 33.45
    ε-caprolactone 106.82
    p-cymene 21.26
    epichlorohydrin 253.12
    1,1,1-trichloroethane 61.72
    2-aminoethanol 273.07
    morpholine-4-carbaldehyde 339.54
    sulfolane 377.54
    2,2,4-trimethylpentane 8.59
    2-methyltetrahydrofuran 206.41
    n-hexyl acetate 51.42
    isooctane 7.86
    2-(2-butoxyethoxy)ethanol 112.19
    sec-butyl acetate 57.32
    tert-butyl acetate 110.65
    decalin 6.97
    glycerin 319.55
    diglyme 194.36
    acrylic acid 100.87
    isopropyl myristate 30.59
    n-butyric acid 112.38
    acetyl acetate 73.99
    di(2-ethylhexyl) phthalate 27.73
    ethyl propionate 119.66
    nitromethane 280.43
    1,2-diethoxyethane 68.39
    benzonitrile 48.28
    trioctyl phosphate 33.02
    1-bromopropane 71.31
    gamma-valerolactone 269.31
    n-decanol 40.01
    triethyl phosphate 52.34
    4-methyl-2-pentanol 71.32
    propionitrile 146.7
    vinylene carbonate 115.23
    1,1,2-trichlorotrifluoroethane 185.85
    DMS 63.29
    cumene 18.44
    2-octanol 46.0
    2-hexanone 95.0
    octyl acetate 40.78
    limonene 25.87
    1,2-dimethoxyethane 377.0
    ethyl orthosilicate 49.72
    tributyl phosphate 30.97
    diacetone alcohol 181.16
    N,N-dimethylaniline 86.59
    acrylonitrile 166.41
    aniline 78.1
    1,3-propanediol 267.39
    bromobenzene 19.33
    dibromomethane 89.32
    1,1,2,2-tetrachloroethane 110.23
    2-methyl-cyclohexyl acetate 45.76
    tetrabutyl urea 53.66
    diisobutyl methanol 34.08
    2-phenylethanol 64.71
    styrene 20.11
    dioctyl adipate 37.29
    dimethyl sulfate 359.61
    ethyl butyrate 73.31
    methyl lactate 259.35
    butyl lactate 60.14
    diethyl carbonate 55.89
    propanediol butyl ether 92.74
    triethyl orthoformate 63.69
    p-tert-butyltoluene 24.46
    methyl 4-tert-butylbenzoate 80.14
    morpholine 269.35
    tert-butylamine 139.35
    n-dodecanol 31.49
    dimethoxymethane 894.25
    ethylene carbonate 113.74
    cyrene 131.41
    2-ethoxyethyl acetate 59.93
    2-ethylhexyl acetate 36.24
    1,2,4-trichlorobenzene 31.26
    4-methylpyridine 101.28
    dibutyl ether 36.28
    2,6-dimethyl-4-heptanol 34.08
    DEF 271.92
    dimethyl isosorbide 173.52
    tetrachloroethylene 74.89
    eugenol 95.17
    triacetin 53.99
    span 80 64.77
    1,4-butanediol 115.84
    1,1-dichloroethane 87.9
    2-methyl-1-pentanol 54.76
    methyl formate 381.6
    2-methyl-1-butanol 103.36
    n-decane 9.33
    butyronitrile 129.82
    3,7-dimethyl-1-octanol 37.03
    1-chlorooctane 22.59
    1-chlorotetradecane 11.9
    n-nonane 9.34
    undecane 7.54
    tert-butylcyclohexane 7.29
    cyclooctane 10.65
    cyclopentanol 157.29
    tetrahydropyran 128.0
    tert-amyl methyl ether 110.79
    2,5,8-trioxanonane 151.69
    1-hexene 30.16
    2-isopropoxyethanol 166.38
    2,2,2-trifluoroethanol 145.6
    methyl butyrate 126.54

    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