Pentadecanal

Overview IFRA Botanical Request a quote

  • Identifiers

    CAS number
    2765-11-9

    Molecular formula
    C15H30O

    SMILES
    CCCCCCCCCCCCCCC=O

    Safety labels

    Irritant
    Irritant

    Retention indicies (RI)

    • DB5: 1713.25
    • Carbowax: 2012.67

  • Odor profile

    Waxy 73.7%
    Fatty 72.29%
    Citrus 60.0%
    Fresh 41.65%
    Orange 41.34%
    Aldehydic 41.17%
    Sweet 38.67%
    Fruit skin 37.92%
    Fruity 37.86%
    Meaty 37.71%

    Scent© AI

  • Properties

    XLogP3-AA
    6.5

    Molecular weight
    226.4 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Melting point expt.

    • 24 - 25 °C

    Boiling point

    • 284.00 to 286.00 °C. @ 760.00 mm Hg

    Flash point est.
    134.94 ˚C

  • Synonyms

    • PENTADECANAL
    • 2765-11-9
    • 1-pentadecanal
    • n-pentadecanal
    • Pentadecanal-
    • pentadecaldehyde
    • PXR39QX5Q7
    • UNII-PXR39QX5Q7
    • DTXSID5062633
    • CHEBI:17302
    • EINECS 220-435-1
    • 1-Pentadecanal; Pentadecaldehyde; n-Pentadecanal
    • Pentadecanaldehyde
    • Pentadecyl Aldehyde
    • pentadecan-15-one
    • MFCD12911660
    • SCHEMBL120108
    • QSPL 086
    • CHEMBL5410059
    • DTXCID7037715
    • STR09264
    • LMFA06000083
    • AKOS013844767
    • CS-W004304
    • NS00049092
    • P1869
    • C01948
    • Q27102309
    • 220-435-1

  • Applications

    Pentadecanal (CAS 2765-11-9) is a straight-chain C15 fatty aldehyde used mainly as a versatile building block: a precursor that can be reduced to pentadecanol or oxidized to pentadecanoic acid and further to amide/ester derivatives for manufacturing surfactants, lubricant additives, and hydrophobic coatings; a reagent to form imines/oximes and acetals to tune volatility, odor character, and substantivity in fragrance compositions for perfumes, soaps, and personal-care products at trace levels; an analytical reference/internal standard in GC/GC-MS method development across long-chain alkanals, in catalytic redox mechanistic studies, and in assays of fatty aldehyde–metabolizing enzymes; a chain-length–defining starter in semi-synthetic routes to fragrance intermediates and certain insect semiochemicals; and an aldehyde handle for surface functionalization (Schiff-base coupling to polymers, porous solids, or nanoparticles) to impart hydrophobicity and improve compatibility with organic matrices in materials research.

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 260.31
    methanol 148.74
    isopropanol 396.57
    water 0.0
    ethyl acetate 1098.62
    n-propanol 353.4
    acetone 754.51
    n-butanol 458.19
    acetonitrile 271.92
    DMF 669.82
    toluene 429.84
    isobutanol 350.75
    1,4-dioxane 956.14
    methyl acetate 538.41
    THF 2552.16
    2-butanone 936.47
    n-pentanol 333.82
    sec-butanol 424.7
    n-hexane 433.8
    ethylene glycol 10.8
    NMP 1051.18
    cyclohexane 1001.62
    DMSO 925.81
    n-butyl acetate 1559.53
    n-octanol 256.42
    chloroform 1977.49
    n-propyl acetate 1179.47
    acetic acid 189.22
    dichloromethane 2002.62
    cyclohexanone 2215.8
    propylene glycol 44.45
    isopropyl acetate 1004.17
    DMAc 668.46
    2-ethoxyethanol 415.07
    isopentanol 546.91
    n-heptane 473.34
    ethyl formate 396.74
    1,2-dichloroethane 1696.72
    n-hexanol 473.57
    2-methoxyethanol 493.62
    isobutyl acetate 782.18
    tetrachloromethane 530.47
    n-pentyl acetate 1075.68
    transcutol 2062.25
    n-heptanol 257.37
    ethylbenzene 346.24
    MIBK 901.3
    2-propoxyethanol 666.04
    tert-butanol 691.6
    MTBE 1070.88
    2-butoxyethanol 518.04
    propionic acid 282.08
    o-xylene 345.1
    formic acid 19.82
    diethyl ether 1128.02
    m-xylene 346.52
    p-xylene 464.66
    chlorobenzene 696.38
    dimethyl carbonate 133.34
    n-octane 122.59
    formamide 47.13
    cyclopentanone 1987.39
    2-pentanone 1188.25
    anisole 553.01
    cyclopentyl methyl ether 1632.6
    gamma-butyrolactone 1688.34
    1-methoxy-2-propanol 627.47
    pyridine 1120.67
    3-pentanone 818.5
    furfural 1058.83
    n-dodecane 49.89
    diethylene glycol 188.34
    diisopropyl ether 543.29
    tert-amyl alcohol 608.09
    acetylacetone 1062.51
    n-hexadecane 63.06
    acetophenone 586.18
    methyl propionate 612.61
    isopentyl acetate 1336.71
    trichloroethylene 2294.74
    n-nonanol 255.03
    cyclohexanol 834.73
    benzyl alcohol 308.22
    2-ethylhexanol 559.85
    isooctanol 306.0
    dipropyl ether 1693.71
    1,2-dichlorobenzene 759.36
    ethyl lactate 299.63
    propylene carbonate 958.91
    n-methylformamide 211.57
    2-pentanol 461.2
    n-pentane 237.56
    1-propoxy-2-propanol 903.45
    1-methoxy-2-propyl acetate 968.03
    2-(2-methoxypropoxy) propanol 437.72
    mesitylene 299.49
    ε-caprolactone 1626.24
    p-cymene 334.23
    epichlorohydrin 1834.0
    1,1,1-trichloroethane 1818.1
    2-aminoethanol 60.05
    morpholine-4-carbaldehyde 912.94
    sulfolane 2112.41
    2,2,4-trimethylpentane 122.7
    2-methyltetrahydrofuran 2016.16
    n-hexyl acetate 1014.07
    isooctane 105.44
    2-(2-butoxyethoxy)ethanol 616.79
    sec-butyl acetate 945.95
    tert-butyl acetate 1192.45
    decalin 273.47
    glycerin 63.8
    diglyme 1383.31
    acrylic acid 152.38
    isopropyl myristate 413.91
    n-butyric acid 843.96
    acetyl acetate 527.59
    di(2-ethylhexyl) phthalate 219.74
    ethyl propionate 1004.18
    nitromethane 459.83
    1,2-diethoxyethane 1450.63
    benzonitrile 535.65
    trioctyl phosphate 194.64
    1-bromopropane 1386.85
    gamma-valerolactone 1945.91
    n-decanol 178.12
    triethyl phosphate 476.84
    4-methyl-2-pentanol 338.66
    propionitrile 455.3
    vinylene carbonate 598.12
    1,1,2-trichlorotrifluoroethane 896.83
    DMS 436.63
    cumene 261.43
    2-octanol 247.33
    2-hexanone 1054.77
    octyl acetate 429.76
    limonene 663.22
    1,2-dimethoxyethane 1344.45
    ethyl orthosilicate 501.92
    tributyl phosphate 291.12
    diacetone alcohol 829.85
    N,N-dimethylaniline 391.15
    acrylonitrile 372.19
    aniline 392.07
    1,3-propanediol 164.64
    bromobenzene 863.89
    dibromomethane 1544.42
    1,1,2,2-tetrachloroethane 2338.17
    2-methyl-cyclohexyl acetate 845.78
    tetrabutyl urea 378.1
    diisobutyl methanol 467.6
    2-phenylethanol 368.23
    styrene 418.98
    dioctyl adipate 536.65
    dimethyl sulfate 271.99
    ethyl butyrate 1458.33
    methyl lactate 185.45
    butyl lactate 546.78
    diethyl carbonate 668.37
    propanediol butyl ether 316.08
    triethyl orthoformate 965.78
    p-tert-butyltoluene 313.68
    methyl 4-tert-butylbenzoate 540.37
    morpholine 1444.95
    tert-butylamine 578.2
    n-dodecanol 136.1
    dimethoxymethane 551.47
    ethylene carbonate 630.55
    cyrene 381.03
    2-ethoxyethyl acetate 893.18
    2-ethylhexyl acetate 1152.0
    1,2,4-trichlorobenzene 808.53
    4-methylpyridine 1057.11
    dibutyl ether 1176.09
    2,6-dimethyl-4-heptanol 467.6
    DEF 1129.04
    dimethyl isosorbide 1010.75
    tetrachloroethylene 1436.33
    eugenol 392.94
    triacetin 731.43
    span 80 448.89
    1,4-butanediol 62.89
    1,1-dichloroethane 1522.96
    2-methyl-1-pentanol 385.57
    methyl formate 143.4
    2-methyl-1-butanol 450.61
    n-decane 124.19
    butyronitrile 671.73
    3,7-dimethyl-1-octanol 386.26
    1-chlorooctane 449.99
    1-chlorotetradecane 141.17
    n-nonane 137.75
    undecane 72.77
    tert-butylcyclohexane 218.15
    cyclooctane 276.82
    cyclopentanol 704.39
    tetrahydropyran 2201.71
    tert-amyl methyl ether 865.02
    2,5,8-trioxanonane 784.9
    1-hexene 812.39
    2-isopropoxyethanol 428.05
    2,2,2-trifluoroethanol 64.96
    methyl butyrate 1364.66

    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

Botanical

Name CAS Botanical Proportion
Lime (Mexican, West Indian, Key) 1 8008-26-2 Citrus aurantifolia (Christm.) Swingle, fam. Rutaceae 0.01%
Lime (Mexican, West Indian, Key) 2 8008-26-2 Citrus aurantifolia (Christm.) Swingle, fam. Rutaceae 0.01%
Lime (Persian) 1 90063-52-8 Citrus latifolia Tanaka, fam. Rutaceae 0.01%
Etrog, peel Citrus medica L., cultivar ethrog Engl., fam. Rutaceae 0.01%
Ziziphora tenuior (Turkey) Ziziphora tenuior L.(Z.acutifolia Montbret & Aucher ex Bentham), Lamiaceae 0.06%
Cilantro (Coriander leaf) 3 8008-52-4 Coriandrum sativum L., fam. Apiaceae (Umbelliferae) 0.1%
Angelica root (Finland) 4 8015-64-3 Angelica archangelica L. var. archangelica, fam. Apiaceae (Umbelliferae) 0.05%
Angelica root (Finland) 3 8015-64-3 Angelica archangelica L. var. sativa, fam. Apiaceae (Umbelliferae) 0.2%
Protium heptaphyllum 1a leaf Protium heptaphyllum (Aubl.) March., fam. Burseraceae 1.84%
Protium heptaphyllum 1b stem Protium heptaphyllum (Aubl.) March., fam. Burseraceae 2.18%
Rhubarb root Rheum palmatum L., fam. Polygonaceae 0.01%
Cilantro (Coriander leaf) 5a 8008-52-4 Coriandrum sativum L., fam. Apiaceae (Umbelliferae) 0.47%
Cilantro (Coriander leaf) 5b 8008-52-4 Coriandrum sativum L., fam. Apiaceae (Umbelliferae) 0.61%
Citron (Italy) peel 1b Citrus medica L., cultivar Diamante, fam. Rutaceae 0.01%
Citron (Italy) peel 1c Citrus medica L., cultivar Diamante, fam. Rutaceae 0.15%
Bifora radians (Turkey) Bifora radians Bieb., fam. Apiaceae (Umbelliferae) 0.82%
Catharanthus roseus leaf Catharanthus roseus (L.) G. Don, fam. Apocynaceae 0.4%
Catharanthus roseus marcs Catharanthus roseus (L.) G. Don, fam. Apocynaceae 0.3%
Mandarin (Italy) 8 8008-31-9 Citrus deliciosa Tenore (C. reticulata Blanco, cv.mandarin), fam. Rutaceae 0.01%
Tangerine (USA-Florida) 3 8008-31-9 Citrus reticulata Blanco, cultivar Dansy, fam. Rutaceae 0.01%
Cerastium candidissimum (Greece) Cerastium candidissimum Correns, fam. Caryophyllaceae 0.6%
Leea guineensis (Cameroon) 1b leaf Leea guineensis G. Don, fam. Leeaceae 0.3%
Tobacco, Yaka 8037-19-2 Nicotiana tabacum L., fam. Solanaceae 4.9%
Geneps fruit (Cuba) Melicocca bijuga L., fam. Sapindaceae 0.1%
Astronium urundeuva (Brazil) Astronium urundeuva (Allemao) Engl., fam. Anacardiaceae 0.05%
Croton jimenezii (Costa Rica) Croton jimenezii Standl. et Valerio, fam. Euphorbiaceae 0.7%