Calcium arsenate

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  • Identifiers

    CAS number
    7778-44-1

    Molecular formula
    As2Ca3O8

    SMILES
    [O-][As](=O)([O-])[O-].[O-][As](=O)([O-])[O-].[Ca+2].[Ca+2].[Ca+2]

    Safety labels

    Acute Toxic
    Acute Toxic

    Health Hazard
    Health

    Environmental Hazard
    Environmental

  • Odor profile

    Fragrance
    Odorless 81.26%
    Sweet 21.15%
    Clean 16.86%
    Sour 13.68%
    Bitter 12.73%
    Balsamic 12.35%
    Musk 12.31%
    Savory 11.62%
    Sharp 11.41%
    Milky 11.34%

     

    Flavor
    Odorless 65.43%
    Sour 24.16%
    Bland 21.31%
    Mousy 19.9%
    Mild 19.6%
    Formyl 19.46%
    Rotten 18.91%
    Soy 18.88%
    Yeast 18.43%
    Sweet-like 18.04%

     

  • Properties

    pKa est.
    -12.3 (strong acid)

    Molecular weight
    398.07 g/mol

    Melting point expt.

    • 2651 °F (EPA, 1998)
    • Decomposes
    • 1455 °C

    Boiling point

    • Decomposes (NIOSH, 2024)
    • No boiling point at normal pressure; decomposes on heating
    • Decomposes

    Flash point

    • 167.95 ˚C est.

    Solubility expt.

    • 0.01 % at 77 °F (NIOSH, 2024)
    • Sol in dil acids
    • Insol in organic solvents
    • 0.013 G/100 CC OF WATER AT 25 °C
    • Solubility in water: very poor
    • (77 °F): 0.01%

  • Synonyms

    • CALCIUM ARSENATE
    • 7778-44-1
    • Pencal
    • Cucumber dust
    • Spra-cal
    • Arsenic acid, calcium salt
    • Calcium-o-arsenate
    • Chip-Cal Granular
    • Tricalcium arsenate
    • Calcium orthoarsenate
    • Calcium arsenate (Ca3(AsO4)2)
    • tricalcium;diarsorate
    • 10103-62-5
    • HSDB 1433
    • EINECS 233-287-8
    • UNII-95OX15I8ZU
    • 95OX15I8ZU
    • AI3-24838
    • Arsenic acid (H3AsO4), calcium salt (2:3)
    • CALCAREA ARSENICICA
    • Arsenic acid (H3AsO4),calcium salt (2:3)
    • DTXSID6058182
    • EC 231-904-5
    • Kalziumarseniat (German)
    • UN1573
    • Arseniate de calcium (French)
    • EINECS 231-904-5
    • Calciumarsenat
    • Kalziumarseniat
    • Spracal
    • Kilmag
    • Chip-Cal
    • Arsenic acid, calcium slt (2:3)
    • Arseniate de calcium
    • Caswell no 137
    • MFCD00049407
    • KALO
    • Calcium ortho-arsenate
    • Arsenic acid,calcium salt
    • Pesticide Code 013501
    • TRICALCIUM-O-ARSENATE
    • CALCIUM ARSENATE [MI]
    • CALCIUM ARSENATE [HSDB]
    • TRICALCIUM ORTHO ARSENATE
    • DTXCID2031950
    • CHEBI:81880
    • CALCIUM ARSENATE [WHO-DD]
    • CALCIUM ARSENATE, (SOLID)
    • RMBBSOLAGVEUSI-UHFFFAOYSA-H
    • CALCAREA ARSENICICA [HPUS]
    • EPA pesticide chemical code 013501
    • Calcium arsenate [UN1573] [Poison]
    • DB-254154
    • NS00080311
    • C18647
    • Q412645
    • ARSENIC ACID (H(SUB 3)ASO(SUB 4)) CALCIUM SALT (2:3)
    • 231-904-5

  • Applications

    Calcium arsenate (CAS 7778-44-1) is used in agriculture as an arsenic-containing pesticide (insecticide/miticide and historically a fungicide) to control pests on crops; it has also been employed as a wood preservative to deter insects and extend timber life; in industrial manufacturing it can serve as a source or intermediate for arsenate-containing inorganic chemicals and related formulations; its presence is mainly in legacy or specialized products and requires adherence to local regulations and handling limits; it may also be encountered in certain agrochemical formulations or analytical contexts as a reagent, with usage varying by region.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 300.05
    methanol 432.91
    isopropanol 285.36
    water 178.09
    ethyl acetate 120.31
    n-propanol 205.08
    acetone 381.06
    n-butanol 188.28
    acetonitrile 182.99
    DMF 1132.76
    toluene 69.44
    isobutanol 147.26
    1,4-dioxane 273.7
    methyl acetate 138.46
    THF 471.57
    2-butanone 185.36
    n-pentanol 129.24
    sec-butanol 206.1
    n-hexane 43.3
    ethylene glycol 248.91
    NMP 527.47
    cyclohexane 61.25
    DMSO 1165.96
    n-butyl acetate 65.56
    n-octanol 104.45
    chloroform 147.78
    n-propyl acetate 82.02
    acetic acid 176.48
    dichloromethane 186.15
    cyclohexanone 156.62
    propylene glycol 172.24
    isopropyl acetate 98.78
    DMAc 637.0
    2-ethoxyethanol 271.4
    isopentanol 141.61
    n-heptane 45.48
    ethyl formate 122.71
    1,2-dichloroethane 176.44
    n-hexanol 114.58
    2-methoxyethanol 561.24
    isobutyl acetate 47.89
    tetrachloromethane 60.71
    n-pentyl acetate 78.26
    transcutol 242.29
    n-heptanol 95.02
    ethylbenzene 42.5
    MIBK 121.23
    2-propoxyethanol 230.36
    tert-butanol 330.32
    MTBE 217.13
    2-butoxyethanol 152.82
    propionic acid 118.01
    o-xylene 73.87
    formic acid 230.96
    diethyl ether 258.66
    m-xylene 67.28
    p-xylene 48.45
    chlorobenzene 51.84
    dimethyl carbonate 141.71
    n-octane 26.81
    formamide 355.28
    cyclopentanone 246.8
    2-pentanone 179.19
    anisole 101.66
    cyclopentyl methyl ether 216.03
    gamma-butyrolactone 224.64
    1-methoxy-2-propanol 413.3
    pyridine 151.81
    3-pentanone 149.85
    furfural 218.48
    n-dodecane 21.28
    diethylene glycol 272.07
    diisopropyl ether 99.71
    tert-amyl alcohol 234.51
    acetylacetone 179.98
    n-hexadecane 22.64
    acetophenone 93.42
    methyl propionate 154.35
    isopentyl acetate 55.3
    trichloroethylene 159.21
    n-nonanol 95.49
    cyclohexanol 157.48
    benzyl alcohol 95.86
    2-ethylhexanol 67.39
    isooctanol 70.02
    dipropyl ether 116.64
    1,2-dichlorobenzene 57.4
    ethyl lactate 80.78
    propylene carbonate 105.61
    n-methylformamide 377.45
    2-pentanol 175.4
    n-pentane 85.21
    1-propoxy-2-propanol 166.29
    1-methoxy-2-propyl acetate 96.45
    2-(2-methoxypropoxy) propanol 123.14
    mesitylene 56.85
    ε-caprolactone 121.54
    p-cymene 42.14
    epichlorohydrin 228.4
    1,1,1-trichloroethane 105.32
    2-aminoethanol 246.07
    morpholine-4-carbaldehyde 403.84
    sulfolane 388.34
    2,2,4-trimethylpentane 30.12
    2-methyltetrahydrofuran 231.31
    n-hexyl acetate 88.65
    isooctane 25.59
    2-(2-butoxyethoxy)ethanol 157.82
    sec-butyl acetate 54.62
    tert-butyl acetate 118.23
    decalin 20.95
    glycerin 288.22
    diglyme 248.65
    acrylic acid 117.98
    isopropyl myristate 57.2
    n-butyric acid 123.41
    acetyl acetate 72.14
    di(2-ethylhexyl) phthalate 49.99
    ethyl propionate 84.48
    nitromethane 307.8
    1,2-diethoxyethane 118.83
    benzonitrile 70.02
    trioctyl phosphate 49.6
    1-bromopropane 124.34
    gamma-valerolactone 257.01
    n-decanol 81.24
    triethyl phosphate 52.93
    4-methyl-2-pentanol 100.46
    propionitrile 125.28
    vinylene carbonate 91.73
    1,1,2-trichlorotrifluoroethane 209.06
    DMS 70.19
    cumene 37.82
    2-octanol 84.3
    2-hexanone 101.21
    octyl acetate 69.43
    limonene 61.23
    1,2-dimethoxyethane 364.43
    ethyl orthosilicate 53.4
    tributyl phosphate 47.49
    diacetone alcohol 188.0
    N,N-dimethylaniline 124.23
    acrylonitrile 149.33
    aniline 116.72
    1,3-propanediol 267.49
    bromobenzene 44.64
    dibromomethane 146.48
    1,1,2,2-tetrachloroethane 174.33
    2-methyl-cyclohexyl acetate 56.45
    tetrabutyl urea 86.76
    diisobutyl methanol 62.62
    2-phenylethanol 82.79
    styrene 46.74
    dioctyl adipate 64.82
    dimethyl sulfate 258.08
    ethyl butyrate 66.62
    methyl lactate 160.51
    butyl lactate 73.14
    diethyl carbonate 48.81
    propanediol butyl ether 129.89
    triethyl orthoformate 61.63
    p-tert-butyltoluene 48.94
    methyl 4-tert-butylbenzoate 111.34
    morpholine 317.12
    tert-butylamine 238.64
    n-dodecanol 69.05
    dimethoxymethane 577.8
    ethylene carbonate 81.28
    cyrene 126.71
    2-ethoxyethyl acetate 83.92
    2-ethylhexyl acetate 46.51
    1,2,4-trichlorobenzene 65.76
    4-methylpyridine 146.27
    dibutyl ether 79.2
    2,6-dimethyl-4-heptanol 62.62
    DEF 275.41
    dimethyl isosorbide 159.56
    tetrachloroethylene 137.56
    eugenol 120.05
    triacetin 81.73
    span 80 108.51
    1,4-butanediol 130.78
    1,1-dichloroethane 141.41
    2-methyl-1-pentanol 89.54
    methyl formate 272.56
    2-methyl-1-butanol 131.49
    n-decane 30.05
    butyronitrile 117.21
    3,7-dimethyl-1-octanol 76.29
    1-chlorooctane 61.36
    1-chlorotetradecane 34.53
    n-nonane 30.67
    undecane 24.59
    tert-butylcyclohexane 21.25
    cyclooctane 32.5
    cyclopentanol 195.0
    tetrahydropyran 191.82
    tert-amyl methyl ether 186.4
    2,5,8-trioxanonane 208.31
    1-hexene 73.82
    2-isopropoxyethanol 179.43
    2,2,2-trifluoroethanol 134.32
    methyl butyrate 101.39

    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