Sodium metaborate

Overview IFRA Request a quote

  • Identifiers

    CAS number
    7775-19-1

    Molecular formula
    BNaO2

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

    Safety labels

    Irritant
    Irritant

    Health Hazard
    Health

  • Odor profile

    Fragrance
    Odorless 83.2%
    Sharp 23.92%
    Pungent 23.3%
    Sour 21.95%
    Burnt 14.99%
    Caramellic 14.8%
    Fruity 13.58%
    Cheesy 13.57%
    Ethereal 13.55%
    Bitter 12.08%

     

    Flavor
    Odorless 57.48%
    Pungent 34.02%
    Mustard 30.54%
    Vinegar 27.18%
    Formyl 26.05%
    Bitter 25.26%
    Sour 25.18%
    Sulfur 23.61%
    Mousy 22.31%
    Rotten 21.77%

     

  • Properties

    pKa est.
    5.55 (weak acid)

    Molecular weight
    65.8 g/mol

    Melting point expt.

    • 966 °C

    Boiling point

    • 1434 °C

    Flash point

    • -3.74 ˚C est.

    Solubility expt.

    • In water, 2.0X10+5 mg/L at 20 °C
    • 36 g/100 g water at 35 °C

  • Synonyms

    • SODIUM METABORATE
    • 7775-19-1
    • Borosoap
    • Kodalk
    • Boric acid (HBO2), sodium salt
    • Sodium borate (NaBO2)
    • Sodium metaborate, anhydrous
    • Caswell No. 779AA
    • Boric acid, monosodium salt
    • Monosodium metaborate
    • sodium;oxido(oxo)borane
    • HSDB 5045
    • EINECS 231-891-6
    • EPA Pesticide Chemical Code 011104
    • NaBO2
    • SODIUMMETABORATE
    • Sodium(1+), (metaborato-O)-
    • Z6Q395A23R
    • Boric acid (HBO2), sodium salt (1:1)
    • SODIUM METABORATE [MI]
    • DTXSID2034386
    • SODIUM METABORATE [HSDB]
    • CHEBI:75227
    • EC 231-891-6
    • SODIUM BORATE (NA2(BO2)2)
    • UNII-Z6Q395A23R
    • Caswell Number 779 AA
    • 98536-58-4
    • DTXCID0014386
    • AKOS024426998
    • USEPA/OPP Pesticide Code: 011104
    • NS00093515
    • Q3333421
    • 231-891-6

  • Applications

    Sodium metaborate (CAS 7775-19-1) is used primarily as a boron source and flux in the glass and ceramic industries, aiding boron oxide incorporation and lowering melting temperatures in frits and glazes; in polymers and coatings, it serves as a processing aid and stabilizer, and can help adjust rheology and durability of formulations; in cleaning, detergents, and personal care, it functions as a pH adjuster and stabilizer for aqueous systems, helping formulation stability and cleaning performance; in agriculture, it can provide boron as a micronutrient fertilizer; in inks and coatings, it helps stabilize formulations and adjust pH for consistent viscosity and performance.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 612.0
    methanol 894.07
    isopropanol 504.66
    water 149.98
    ethyl acetate 121.61
    n-propanol 396.07
    acetone 389.66
    n-butanol 347.87
    acetonitrile 201.6
    DMF 1686.2
    toluene 41.21
    isobutanol 253.52
    1,4-dioxane 300.71
    methyl acetate 162.1
    THF 509.76
    2-butanone 205.06
    n-pentanol 235.56
    sec-butanol 330.98
    n-hexane 27.03
    ethylene glycol 468.44
    NMP 482.56
    cyclohexane 18.06
    DMSO 1164.07
    n-butyl acetate 67.81
    n-octanol 121.95
    chloroform 66.72
    n-propyl acetate 84.23
    acetic acid 261.25
    dichloromethane 102.81
    cyclohexanone 133.52
    propylene glycol 349.36
    isopropyl acetate 86.14
    DMAc 665.67
    2-ethoxyethanol 404.67
    isopentanol 258.77
    n-heptane 24.48
    ethyl formate 131.38
    1,2-dichloroethane 114.63
    n-hexanol 170.31
    2-methoxyethanol 805.5
    isobutyl acetate 46.37
    tetrachloromethane 22.42
    n-pentyl acetate 75.1
    transcutol 443.56
    n-heptanol 118.54
    ethylbenzene 31.17
    MIBK 130.39
    2-propoxyethanol 339.3
    tert-butanol 569.18
    MTBE 239.75
    2-butoxyethanol 205.73
    propionic acid 169.86
    o-xylene 43.9
    formic acid 337.41
    diethyl ether 256.5
    m-xylene 42.95
    p-xylene 31.04
    chlorobenzene 33.96
    dimethyl carbonate 138.04
    n-octane 13.51
    formamide 488.05
    cyclopentanone 235.78
    2-pentanone 198.51
    anisole 106.33
    cyclopentyl methyl ether 194.38
    gamma-butyrolactone 235.37
    1-methoxy-2-propanol 597.96
    pyridine 130.28
    3-pentanone 121.79
    furfural 207.17
    n-dodecane 14.03
    diethylene glycol 371.47
    diisopropyl ether 79.88
    tert-amyl alcohol 343.37
    acetylacetone 148.49
    n-hexadecane 14.28
    acetophenone 77.28
    methyl propionate 160.98
    isopentyl acetate 56.23
    trichloroethylene 99.61
    n-nonanol 106.87
    cyclohexanol 162.33
    benzyl alcohol 107.49
    2-ethylhexanol 75.97
    isooctanol 83.97
    dipropyl ether 104.73
    1,2-dichlorobenzene 33.97
    ethyl lactate 86.38
    propylene carbonate 90.19
    n-methylformamide 593.2
    2-pentanol 263.97
    n-pentane 46.93
    1-propoxy-2-propanol 215.47
    1-methoxy-2-propyl acetate 91.11
    2-(2-methoxypropoxy) propanol 153.05
    mesitylene 33.13
    ε-caprolactone 113.47
    p-cymene 25.12
    epichlorohydrin 271.71
    1,1,1-trichloroethane 51.24
    2-aminoethanol 526.28
    morpholine-4-carbaldehyde 452.52
    sulfolane 278.96
    2,2,4-trimethylpentane 19.27
    2-methyltetrahydrofuran 267.38
    n-hexyl acetate 94.8
    isooctane 19.73
    2-(2-butoxyethoxy)ethanol 234.15
    sec-butyl acetate 55.19
    tert-butyl acetate 111.68
    decalin 12.14
    glycerin 449.18
    diglyme 344.47
    acrylic acid 166.81
    isopropyl myristate 51.83
    n-butyric acid 162.32
    acetyl acetate 56.86
    di(2-ethylhexyl) phthalate 43.59
    ethyl propionate 81.04
    nitromethane 366.67
    1,2-diethoxyethane 136.35
    benzonitrile 67.92
    trioctyl phosphate 43.13
    1-bromopropane 80.92
    gamma-valerolactone 286.81
    n-decanol 87.57
    triethyl phosphate 34.92
    4-methyl-2-pentanol 144.34
    propionitrile 147.53
    vinylene carbonate 78.98
    1,1,2-trichlorotrifluoroethane 193.06
    DMS 62.84
    cumene 27.1
    2-octanol 92.91
    2-hexanone 114.16
    octyl acetate 69.43
    limonene 35.77
    1,2-dimethoxyethane 473.48
    ethyl orthosilicate 36.17
    tributyl phosphate 41.5
    diacetone alcohol 212.46
    N,N-dimethylaniline 101.78
    acrylonitrile 183.66
    aniline 96.08
    1,3-propanediol 484.04
    bromobenzene 23.38
    dibromomethane 68.48
    1,1,2,2-tetrachloroethane 97.24
    2-methyl-cyclohexyl acetate 41.91
    tetrabutyl urea 72.71
    diisobutyl methanol 59.12
    2-phenylethanol 86.21
    styrene 36.9
    dioctyl adipate 61.02
    dimethyl sulfate 211.73
    ethyl butyrate 57.15
    methyl lactate 167.89
    butyl lactate 73.34
    diethyl carbonate 36.82
    propanediol butyl ether 201.92
    triethyl orthoformate 45.06
    p-tert-butyltoluene 27.66
    methyl 4-tert-butylbenzoate 93.73
    morpholine 412.91
    tert-butylamine 326.7
    n-dodecanol 71.31
    dimethoxymethane 650.95
    ethylene carbonate 69.45
    cyrene 115.22
    2-ethoxyethyl acetate 96.92
    2-ethylhexyl acetate 41.31
    1,2,4-trichlorobenzene 39.4
    4-methylpyridine 132.92
    dibutyl ether 81.54
    2,6-dimethyl-4-heptanol 59.12
    DEF 294.97
    dimethyl isosorbide 170.69
    tetrachloroethylene 80.92
    eugenol 123.2
    triacetin 72.15
    span 80 129.07
    1,4-butanediol 239.24
    1,1-dichloroethane 84.74
    2-methyl-1-pentanol 162.29
    methyl formate 364.33
    2-methyl-1-butanol 226.85
    n-decane 18.31
    butyronitrile 150.87
    3,7-dimethyl-1-octanol 86.1
    1-chlorooctane 46.61
    1-chlorotetradecane 26.09
    n-nonane 17.73
    undecane 15.85
    tert-butylcyclohexane 14.29
    cyclooctane 10.2
    cyclopentanol 225.56
    tetrahydropyran 199.5
    tert-amyl methyl ether 188.54
    2,5,8-trioxanonane 263.12
    1-hexene 69.34
    2-isopropoxyethanol 250.3
    2,2,2-trifluoroethanol 135.74
    methyl butyrate 106.91

    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