Potassium Phosphate, Dibasic

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  • Identifiers

    CAS number
    7758-11-4

    Molecular formula
    HK2O4P

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

    Safety labels

    Corrosive
    Corrosive

    Irritant
    Irritant

  • Odor profile

    Fragrance
    Odorless 82.12%
    Clean 17.91%
    Sour 17.89%
    Sweet 15.18%
    Sharp 13.81%
    Bitter 12.85%
    Balsamic 12.23%
    Savory 12.21%
    Alcoholic 11.55%
    Milky 11.42%

     

    Flavor
    Odorless 70.05%
    Sour 33.87%
    Vinegar 25.11%
    Bland 22.95%
    Formyl 20.64%
    Pungent 20.52%
    Mousy 20.02%
    Soy 19.53%
    Acidic 19.26%
    Yeast 19.1%

     

    Odor impact est.
    Low

  • Properties

    pKa est.
    2.57 (strong acid)

    Molecular weight
    174.176 g/mol

    Melting point expt.

    • Decomp

    Flash point

    • 154.65 ˚C est.

    Solubility expt.

    • Freely soluble in water. Insoluble in ethanol
    • Very sol in water; 100 g dissolves rapidly & completely in 67 g cold water
    • Slightly sol in alcohol

  • Synonyms

    • 7758-11-4
    • Dipotassium hydrogen phosphate
    • DIPOTASSIUM PHOSPHATE
    • Potassium phosphate dibasic
    • Dipotassium hydrogenphosphate
    • Dibasic potassium phosphate
    • Potassium phosphate, dibasic
    • Phosphoric acid, dipotassium salt
    • Potassium dibasic phosphate
    • Dipotassium monophosphate
    • Potassium monophosphate
    • Dipotassium orthophosphate
    • Dipotassium monohydrogen phosphate
    • Hydrogen dipotassium phosphate
    • Potassium phosphate (dibasic)
    • di-potassium hydrogen phosphate
    • Dipotassium hydrogenorthophosphate
    • Dipotassium acid phosphate
    • Dipotassium hydrogen orthophosphate
    • Kali phosphoricum
    • Secondary potassium phosphate
    • Phosphoric acid, potassium salt (1:2)
    • CI71S98N1Z
    • INS NO.340(II)
    • INS-340(II)
    • Dipotassium hydrogen monophosphate
    • E-340(II)
    • Potassium phosphate,dibasic
    • DTXSID8035506
    • KALI PHOSPHORICUM [HPUS]
    • CHEBI:131527
    • potassium dibasic phosphate trihydrate
    • POTASSIUM PHOSPHATE (K2HPO4)
    • POTASSIUM PHOSPHATE, DIBASIC [II]
    • POTASSIUM PHOSPHATE, DIBASIC [MI]
    • POTASSIUM PHOSPHATE, DIBASIC [FCC]
    • POTASSIUM PHOSPHATE, DIBASIC [JAN]
    • DIPOTASSIUM PHOSPHATE [EP IMPURITY]
    • POTASSIUM PHOSPHATE, DIBASIC [HSDB]
    • POTASSIUM PHOSPHATE,DIBASIC [VANDF]
    • DIBASIC POTASSIUM PHOSPHATE [USP-RS]
    • DIPOTASSIUM PHOSPHATE [EP MONOGRAPH]
    • POTASSIUM PHOSPHATE DIBASIC [WHO-DD]
    • POTASSIUM PHOSPHATE DIBASIC ANHYDRATE
    • DIPOTASSIUM HYDROGEN PHOSPHATE (K2HPO4)
    • DIBASIC POTASSIUM PHOSPHATE [USP IMPURITY]
    • DIBASIC POTASSIUM PHOSPHATE [USP MONOGRAPH]
    • POTASSIUM PHOSPHATE, DIBASIC [ORANGE BOOK]
    • POTASSIUM PHOSPHATE, DIBASIC [USP IMPURITY]
    • POTASSIUM PHOSPHATES COMPONENT DIBASIC POTASSIUM PHOSPHATE
    • POTASSIUM PHOSPHATE, DIBASIC (II)
    • DIPOTASSIUM PHOSPHATE (EP IMPURITY)
    • DIPOTASSIUM PHOSPHATE (EP MONOGRAPH)
    • DIBASIC POTASSIUM PHOSPHATE (USP-RS)
    • DIBASIC POTASSIUM PHOSPHATE (USP IMPURITY)
    • DIBASIC POTASSIUM PHOSPHATE (USP MONOGRAPH)
    • POTASSIUM PHOSPHATE, DIBASIC (USP IMPURITY)
    • DipotassiumOphosphate
    • Kali Phos 6X
    • TONICPET 6
    • DIKALIUM PHOSPHATE
    • RefChem:867979
    • KALI PHOSPHORICUM 6X
    • Kali Phosphoricum Kit Refill
    • Potassium phosphate, (dibasic)
    • DTXCID6015506
    • DIPOTASSIUM PHOSPHATE [INCI]
    • POTASSIUM ORTHOPHOSPHATE, MONO-H
    • DIBASIC POTASSIUM PHOSPHATE COMPONENT OF POTASSIUM PHOSPHATES
    • 231-834-5
    • Dipotassium monophosphateSecondary potassium phosphateDipotassium orthophosphateDibasic potassium phosphate
    • Potassium Hydrogen Phosphate
    • Potassium monohydrogen phosphate
    • K2HPO4
    • dipotassium;hydrogen phosphate
    • MFCD00011383
    • Potassium phosphate dibasic anhydrous
    • Potassium phosphate dibasic, anhydrous
    • Potassium phosphate dibasic, ACS reagent
    • Isolyte
    • sec.-Potassium phosphate
    • Dipotassium-O-phosphate
    • HK2O4P
    • CCRIS 6544
    • HSDB 935
    • EINECS 231-834-5
    • Mediject P (TN)
    • di potassium phosphate
    • potassiumdibasicphosphate
    • PotassiumHydrogenPhosphate
    • potassium hydrogenphosphate
    • SCHEMBL3947
    • dipotasium hydrogen phosphate
    • UNII-CI71S98N1Z
    • potassium monohydrogenphosphate
    • potassium hydrogen monophosphate
    • orb1909123
    • CHEMBL1200459
    • Potassium phosphate dibasic anhdyrous
    • dipotassium monohydrogen orthophosphate
    • AKOS015915872
    • AKOS016371887
    • DB09414
    • FP29767
    • Potassium hydrogen phosphate, anhydrous
    • Potassium Phosphate, Dibasic, Anhydrous
    • Potassium phosphate dibasic, USP reagent
    • Potassium phosphate, dibasic (JAN/USP)
    • Potassium phosphate, dibasic [USP:JAN]
    • 7558-11-4
    • Potassium phosphate dibasic, LR, >=98%
    • SY010082
    • DB-230259
    • NS00081371
    • Potassium phosphate dibasic, Biochemical grade
    • Potassium phosphate dibasic, puriss., >=99%
    • D02403
    • EC 231-834-5
    • F094672
    • Potassium phosphate dibasic, ACS reagent, >=98%
    • Potassium phosphate dibasic, USP, 98.0-100.5%
    • Q403721
    • Potassium phosphate dibasic, AR, anhydrous, >=99%
    • Potassium phosphate dibasic, reagent grade, >=98.0%
    • Potassium phosphate dibasic, 99.95% trace metals basis
    • Potassium phosphate dibasic, SAJ first grade, >=98.0%
    • Potassium phosphate dibasic, Trace metals grade 99.95%
    • 7758-11-4

  • Applications

    Potassium Phosphate, Dibasic (CAS 7758-11-4) is widely used as a buffering agent and as a source of potassium and phosphate in a range of industrial processes. In food processing, it functions as an acidity regulator and metal-chelating agent to help stabilize quality and shelf life; in agriculture it serves as a potassium/phosphate fertilizer; in pharmaceuticals and biotechnological manufacturing it acts as a pH adjuster and stabilizer in formulations and as a component of culture media; in cosmetics and personal care it is used to adjust pH and maintain formulation stability; in detergents and household cleaners it serves as a builder and water-softening agent to enhance cleaning performance; in industrial manufacturing and coatings/inks it helps control pH during processing and can function as a processing aid or water-treatment adjunct.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 575.63
    methanol 1025.21
    isopropanol 455.03
    water 1459.1
    ethyl acetate 94.05
    n-propanol 355.75
    acetone 466.75
    n-butanol 265.18
    acetonitrile 238.17
    DMF 1721.38
    toluene 53.65
    isobutanol 224.86
    1,4-dioxane 377.04
    methyl acetate 159.22
    THF 487.79
    2-butanone 185.31
    n-pentanol 189.36
    sec-butanol 260.58
    n-hexane 35.66
    ethylene glycol 642.87
    NMP 603.49
    cyclohexane 45.73
    DMSO 1523.21
    n-butyl acetate 56.43
    n-octanol 89.1
    chloroform 59.84
    n-propyl acetate 76.45
    acetic acid 260.6
    dichloromethane 113.2
    cyclohexanone 153.59
    propylene glycol 397.72
    isopropyl acetate 70.76
    DMAc 851.27
    2-ethoxyethanol 472.12
    isopentanol 185.54
    n-heptane 33.71
    ethyl formate 153.86
    1,2-dichloroethane 137.25
    n-hexanol 123.15
    2-methoxyethanol 864.76
    isobutyl acetate 38.95
    tetrachloromethane 25.02
    n-pentyl acetate 56.34
    transcutol 329.33
    n-heptanol 90.2
    ethylbenzene 30.78
    MIBK 94.19
    2-propoxyethanol 311.44
    tert-butanol 428.28
    MTBE 163.97
    2-butoxyethanol 200.53
    propionic acid 169.31
    o-xylene 56.67
    formic acid 533.39
    diethyl ether 209.77
    m-xylene 46.59
    p-xylene 37.14
    chlorobenzene 31.83
    dimethyl carbonate 175.98
    n-octane 16.89
    formamide 772.47
    cyclopentanone 240.03
    2-pentanone 156.42
    anisole 92.83
    cyclopentyl methyl ether 189.14
    gamma-butyrolactone 235.14
    1-methoxy-2-propanol 572.02
    pyridine 146.84
    3-pentanone 119.82
    furfural 264.98
    n-dodecane 12.74
    diethylene glycol 445.27
    diisopropyl ether 61.51
    tert-amyl alcohol 242.66
    acetylacetone 153.5
    n-hexadecane 13.26
    acetophenone 80.13
    methyl propionate 145.19
    isopentyl acetate 40.21
    trichloroethylene 88.24
    n-nonanol 79.68
    cyclohexanol 155.86
    benzyl alcohol 109.25
    2-ethylhexanol 53.28
    isooctanol 62.15
    dipropyl ether 106.45
    1,2-dichlorobenzene 30.44
    ethyl lactate 99.29
    propylene carbonate 98.65
    n-methylformamide 730.8
    2-pentanol 179.4
    n-pentane 59.23
    1-propoxy-2-propanol 198.6
    1-methoxy-2-propyl acetate 85.81
    2-(2-methoxypropoxy) propanol 148.59
    mesitylene 40.94
    ε-caprolactone 117.74
    p-cymene 25.14
    epichlorohydrin 252.97
    1,1,1-trichloroethane 44.87
    2-aminoethanol 597.0
    morpholine-4-carbaldehyde 561.79
    sulfolane 358.45
    2,2,4-trimethylpentane 16.79
    2-methyltetrahydrofuran 203.79
    n-hexyl acetate 65.23
    isooctane 14.75
    2-(2-butoxyethoxy)ethanol 205.13
    sec-butyl acetate 44.53
    tert-butyl acetate 75.21
    decalin 14.96
    glycerin 611.89
    diglyme 341.33
    acrylic acid 179.98
    isopropyl myristate 39.05
    n-butyric acid 130.98
    acetyl acetate 55.32
    di(2-ethylhexyl) phthalate 41.92
    ethyl propionate 76.87
    nitromethane 436.26
    1,2-diethoxyethane 118.44
    benzonitrile 62.4
    trioctyl phosphate 40.76
    1-bromopropane 77.99
    gamma-valerolactone 316.62
    n-decanol 66.77
    triethyl phosphate 41.92
    4-methyl-2-pentanol 94.41
    propionitrile 148.47
    vinylene carbonate 98.47
    1,1,2-trichlorotrifluoroethane 211.72
    DMS 60.08
    cumene 28.48
    2-octanol 66.81
    2-hexanone 92.49
    octyl acetate 51.86
    limonene 34.25
    1,2-dimethoxyethane 599.5
    ethyl orthosilicate 41.82
    tributyl phosphate 39.83
    diacetone alcohol 156.36
    N,N-dimethylaniline 116.38
    acrylonitrile 186.59
    aniline 111.18
    1,3-propanediol 484.02
    bromobenzene 22.65
    dibromomethane 79.58
    1,1,2,2-tetrachloroethane 95.72
    2-methyl-cyclohexyl acetate 40.56
    tetrabutyl urea 76.86
    diisobutyl methanol 45.15
    2-phenylethanol 75.49
    styrene 35.21
    dioctyl adipate 55.15
    dimethyl sulfate 283.15
    ethyl butyrate 55.94
    methyl lactate 205.84
    butyl lactate 70.9
    diethyl carbonate 42.39
    propanediol butyl ether 173.06
    triethyl orthoformate 53.89
    p-tert-butyltoluene 26.69
    methyl 4-tert-butylbenzoate 94.7
    morpholine 416.48
    tert-butylamine 257.78
    n-dodecanol 56.49
    dimethoxymethane 757.73
    ethylene carbonate 95.54
    cyrene 144.89
    2-ethoxyethyl acetate 68.59
    2-ethylhexyl acetate 32.23
    1,2,4-trichlorobenzene 32.76
    4-methylpyridine 138.51
    dibutyl ether 61.25
    2,6-dimethyl-4-heptanol 45.15
    DEF 271.87
    dimethyl isosorbide 161.7
    tetrachloroethylene 79.06
    eugenol 125.58
    triacetin 66.5
    span 80 111.58
    1,4-butanediol 285.12
    1,1-dichloroethane 78.27
    2-methyl-1-pentanol 115.54
    methyl formate 508.08
    2-methyl-1-butanol 168.85
    n-decane 17.62
    butyronitrile 125.73
    3,7-dimethyl-1-octanol 57.51
    1-chlorooctane 34.78
    1-chlorotetradecane 21.26
    n-nonane 18.16
    undecane 14.69
    tert-butylcyclohexane 13.27
    cyclooctane 24.01
    cyclopentanol 230.07
    tetrahydropyran 193.17
    tert-amyl methyl ether 128.06
    2,5,8-trioxanonane 287.01
    1-hexene 58.75
    2-isopropoxyethanol 262.54
    2,2,2-trifluoroethanol 206.84
    methyl butyrate 99.26

    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