Fluorophosphoric acid

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  • Identifiers

    CAS number
    13537-32-1

    Molecular formula
    FH2O3P

    SMILES
    OP(=O)(O)F

    Safety labels

    Corrosive
    Corrosive

    Acute Toxic
    Acute Toxic

  • Odor profile

    Fragrance
    Odorless 79.36%
    Sour 21.74%
    Clean 17.0%
    Sharp 16.4%
    Sulfurous 15.78%
    Savory 14.86%
    Pungent 14.26%
    Cooked 13.49%
    Cheesy 12.65%
    Meaty 12.26%

     

    Flavor
    Odorless 69.84%
    Sour 39.43%
    Vinegar 30.91%
    Pungent 27.84%
    Bland 22.38%
    Acidic 22.04%
    Formyl 21.26%
    Sharp 21.25%
    Soy 20.39%
    Mousy 19.93%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    -1.1

    pKa est.
    6.24 (neutral)

    Molecular weight
    99.986 g/mol

    Flash point

    • 143.88 ˚C est.

    Solubility expt.

    • SOL IN ALL PROPORTIONS IN COLD WATER

  • Synonyms

    • fluorophosphoric acid
    • 13537-32-1
    • Phosphorofluoridic acid
    • fluorophosphonic acid
    • MONOFLUOROPHOSPHORIC ACID
    • Fluorophosphoric acid, anhydrous
    • Fluorophosphonic acid, mono-
    • HSDB 1186
    • UNII-IW87A7KU3R
    • UN1776
    • CHEBI:30210
    • H2PFO3
    • IW87A7KU3R
    • [PFO(OH)2]
    • DTXSID1075309
    • MONOFLUOROPHOSPHORIC ACID [HSDB]
    • (PFO(OH)2)
    • FLUOROPHOSPHORIC ACID, (ANHYDROUS)
    • FLUOROPHOSPHORIC ACID, [ANHYDROUS]
    • Fluorophosphoric acid (H2PO3F)
    • Fluorophosphonic acid (F(HO)2PO)
    • MFCD00011334
    • fluoranylphosphonic acid
    • sodium-monofluorophosphate
    • Fluorophosphonic acid, mono
    • CHEMBL1208639
    • DTXCID4034316
    • AKOS015914016
    • PD062299
    • NS00013360
    • EN300-295245
    • A806925
    • BRD-K99308954-304-02-4
    • BRD-K99308954-304-03-2
    • BRD-K99308954-304-04-0
    • Q27110731
    • Fluorophosphoric acid, anhydrous [UN1776] [Corrosive]
    • Z1255360409

  • Applications

    Fluorophosphoric acid (CAS 13537-32-1) is typically used as an intermediate and fluorine source in the synthesis of organophosphorus fluorine compounds and phosphate esters. It may serve as a fluorination reagent for introducing fluorine into organic substrates and as a precursor to specialty phosphorus–fluorine materials, coatings, and polymers. In industrial practice, it can function as an etchant for glass and oxide surfaces in surface-treatment and electronics manufacturing; it also appears as an acid additive or processing reagent in certain polymer, adhesive, and coating formulations to impart fluorinated phosphorus characteristics. Use is subject to local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 303.0
    methanol 681.58
    isopropanol 205.37
    water 1731.51
    ethyl acetate 20.3
    n-propanol 167.01
    acetone 208.22
    n-butanol 97.83
    acetonitrile 77.53
    DMF 851.37
    toluene 8.31
    isobutanol 94.71
    1,4-dioxane 93.05
    methyl acetate 39.74
    THF 217.44
    2-butanone 51.81
    n-pentanol 67.08
    sec-butanol 86.23
    n-hexane 7.94
    ethylene glycol 521.14
    NMP 263.07
    cyclohexane 7.37
    DMSO 608.88
    n-butyl acetate 20.01
    n-octanol 20.83
    chloroform 7.46
    n-propyl acetate 23.26
    acetic acid 148.15
    dichloromethane 13.49
    cyclohexanone 39.91
    propylene glycol 327.91
    isopropyl acetate 17.95
    DMAc 323.96
    2-ethoxyethanol 232.96
    isopentanol 60.61
    n-heptane 9.3
    ethyl formate 50.75
    1,2-dichloroethane 17.08
    n-hexanol 51.58
    2-methoxyethanol 455.5
    isobutyl acetate 13.21
    tetrachloromethane 4.92
    n-pentyl acetate 15.84
    transcutol 112.77
    n-heptanol 36.74
    ethylbenzene 5.19
    MIBK 29.68
    2-propoxyethanol 185.56
    tert-butanol 147.93
    MTBE 31.12
    2-butoxyethanol 106.75
    propionic acid 80.46
    o-xylene 9.56
    formic acid 394.92
    diethyl ether 41.41
    m-xylene 9.36
    p-xylene 6.61
    chlorobenzene 3.57
    dimethyl carbonate 59.5
    n-octane 3.05
    formamide 510.89
    cyclopentanone 89.71
    2-pentanone 43.07
    anisole 18.23
    cyclopentyl methyl ether 52.46
    gamma-butyrolactone 91.62
    1-methoxy-2-propanol 301.98
    pyridine 33.9
    3-pentanone 29.42
    furfural 91.73
    n-dodecane 1.92
    diethylene glycol 268.29
    diisopropyl ether 13.86
    tert-amyl alcohol 68.07
    acetylacetone 47.21
    n-hexadecane 1.97
    acetophenone 19.62
    methyl propionate 39.45
    isopentyl acetate 13.63
    trichloroethylene 11.64
    n-nonanol 18.77
    cyclohexanol 40.9
    benzyl alcohol 30.23
    2-ethylhexanol 18.16
    isooctanol 22.5
    dipropyl ether 36.49
    1,2-dichlorobenzene 3.73
    ethyl lactate 46.13
    propylene carbonate 33.21
    n-methylformamide 417.52
    2-pentanol 55.31
    n-pentane 12.32
    1-propoxy-2-propanol 105.07
    1-methoxy-2-propyl acetate 33.5
    2-(2-methoxypropoxy) propanol 55.95
    mesitylene 8.58
    ε-caprolactone 31.49
    p-cymene 6.63
    epichlorohydrin 64.9
    1,1,1-trichloroethane 6.86
    2-aminoethanol 480.78
    morpholine-4-carbaldehyde 222.44
    sulfolane 132.3
    2,2,4-trimethylpentane 3.05
    2-methyltetrahydrofuran 55.69
    n-hexyl acetate 14.8
    isooctane 3.19
    2-(2-butoxyethoxy)ethanol 81.84
    sec-butyl acetate 11.57
    tert-butyl acetate 21.55
    decalin 2.41
    glycerin 462.97
    diglyme 138.98
    acrylic acid 95.75
    isopropyl myristate 8.33
    n-butyric acid 50.58
    acetyl acetate 13.68
    di(2-ethylhexyl) phthalate 12.19
    ethyl propionate 20.52
    nitromethane 196.72
    1,2-diethoxyethane 27.29
    benzonitrile 13.89
    trioctyl phosphate 12.42
    1-bromopropane 9.3
    gamma-valerolactone 121.86
    n-decanol 14.94
    triethyl phosphate 13.71
    4-methyl-2-pentanol 28.84
    propionitrile 41.3
    vinylene carbonate 29.3
    1,1,2-trichlorotrifluoroethane 79.53
    DMS 15.54
    cumene 5.43
    2-octanol 17.7
    2-hexanone 29.09
    octyl acetate 11.99
    limonene 7.89
    1,2-dimethoxyethane 216.8
    ethyl orthosilicate 14.27
    tributyl phosphate 11.3
    diacetone alcohol 61.86
    N,N-dimethylaniline 26.49
    acrylonitrile 60.47
    aniline 24.03
    1,3-propanediol 283.57
    bromobenzene 2.22
    dibromomethane 8.6
    1,1,2,2-tetrachloroethane 13.53
    2-methyl-cyclohexyl acetate 13.53
    tetrabutyl urea 23.09
    diisobutyl methanol 14.28
    2-phenylethanol 25.81
    styrene 5.18
    dioctyl adipate 13.49
    dimethyl sulfate 86.07
    ethyl butyrate 18.73
    methyl lactate 94.18
    butyl lactate 31.93
    diethyl carbonate 13.38
    propanediol butyl ether 88.49
    triethyl orthoformate 18.23
    p-tert-butyltoluene 7.39
    methyl 4-tert-butylbenzoate 30.83
    morpholine 145.7
    tert-butylamine 78.22
    n-dodecanol 11.98
    dimethoxymethane 325.57
    ethylene carbonate 26.84
    cyrene 72.19
    2-ethoxyethyl acetate 20.13
    2-ethylhexyl acetate 10.18
    1,2,4-trichlorobenzene 4.52
    4-methylpyridine 27.66
    dibutyl ether 11.2
    2,6-dimethyl-4-heptanol 14.28
    DEF 70.85
    dimethyl isosorbide 73.85
    tetrachloroethylene 11.91
    eugenol 50.44
    triacetin 20.09
    span 80 45.08
    1,4-butanediol 172.2
    1,1-dichloroethane 10.74
    2-methyl-1-pentanol 31.67
    methyl formate 256.21
    2-methyl-1-butanol 55.81
    n-decane 2.68
    butyronitrile 35.71
    3,7-dimethyl-1-octanol 13.06
    1-chlorooctane 4.97
    1-chlorotetradecane 2.86
    n-nonane 2.72
    undecane 2.21
    tert-butylcyclohexane 2.34
    cyclooctane 4.1
    cyclopentanol 88.24
    tetrahydropyran 44.11
    tert-amyl methyl ether 24.85
    2,5,8-trioxanonane 107.32
    1-hexene 12.53
    2-isopropoxyethanol 115.02
    2,2,2-trifluoroethanol 117.3
    methyl butyrate 29.03

    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