Isoamyl alcohol

  • Identifiers

    CAS number
    123-51-3

    Molecular formula
    C5H12O

    SMILES
    CC(C)CCO
    HO

    Safety labels

    Flammable
    Flammable

    Corrosive
    Corrosive

    Irritant
    Irritant

    Retention indicies (RI)

    • DB5: 738.86
    • Carbowax: 1203.71

  • Odor profile

    fermented 81.58%
    alcoholic 81.51%
    fruity 80.03%
    ethereal 77.22%
    solvent 67.61%
    winey 63.78%
    sweet 58.94%
    pungent 58.15%
    oily 56.92%
    green 54.96%

    Scent© AI

  • Properties

    XLogP3-AA
    1.2 Well soluble in IAA, MMB, TEC

    Molecular weight
    88.15 g/mol

    Vapor pressure est.

    • 2.983 hPa @ 20°C
    • 4.4317 hPa @ 25°C

    Evaporation rate
    Very fast

    Melting points

    • -179 °F (NIOSH, 2024)
    • -117.2 °C
    • -117 °C
    • -179 °F

    Boiling points

    • 270 °F at 760 mmHg (USCG, 1999)
    • 132.5 °C
    • 131.00 to 133.00 °C. @ 760.00 mm Hg
    • 132 °C
    • 270 °F

    Flash points

    • 114 °F (USCG, 1999)
    • 43 °C
    • 109 °F (43 °C) (Closed cup)
    • 42 °C c.c.
    • 114 °F

    Solubilities

    • 2 % at 57 °F (NIOSH, 2024)
    • MISCIBLE WITH ALC, ETHER, BENZENE, CHLOROFORM, PETROLEUM ETHER, GLACIAL ACETIC ACID, OILS
    • VERY SOL IN ACETONE
    • Water solubility = 2.67X10+4 mg/l @ 25 °C
    • 26.7 mg/mL at 25 °C
    • Solubility in water, g/100ml: 2.5 (moderate)
    • Soluble in ethanol, water and most organic solvents

  • Synonyms

    • Isoamyl alcohol
    • 3-Methyl-1-butanol
    • Isopentyl alcohol
    • 3-Methylbutan-1-ol
    • 123-51-3
    • Isopentanol
    • 3-Methylbutanol
    • 1-Butanol, 3-methyl-
    • Isoamylol
    • Isobutylcarbinol
NaN -Infinity

Botanical

Name CAS Botanical Proportion
Roman chamomile (India) 8015-92-7 Anthemis nobilis L., fam. Asteraceae (Compositae) 0.02%
Eriocephalus punctualis Eriocephalus punctualis DC., fam. Eriocaulaceae 0.1%
Laurel leaf (USA) 8006-78-8 Laurus nobilis L., fam. Lauraceae 0.21%
Peppermint (Greece) 2 8006-90-4 Mentha piperita L., fam. Lamiaceae (Labiatae) 0.2%
Rose (Turkey) 6 8007-01-0 Rosa damascena Mill., fam. Rosaceae 0.05%
Rose (Bulgaria) 3a 8007-01-0 Rosa damascena Mill., fam. Rosaceae 0.05%
Truffle, black (Perigord) Tuber melanosporum, fam. Ascomycetae 0.05%
Narcissus poeticus absolute 8023-75-4 Narcissus poeticus L., fam. Amaryllidaceae 0.1%
Osmanthus concentrate 2 (Sukhumi-Abkhasia) 68917-05-5 Osmanthus fragrans (Thunb.) Lour., fam. Oleaceae 0.05%
Rose (Bulgaria) 2 8007-01-0 Rosa damascena Mill., fam. Rosaceae 0.05%
Gingergrass (India) 5 Cymbopogon martini Stapf., var. sofia, fam. Poaceae (Gramineae) 0.08%
Rose headspace 1 8007-01-0 Rosa damascena Mill., cv. Othello, fam. Rosaceae 0.05%
Mustard, flowers 8007-40-7 Brassica juncea (L.) Czern. et Coss., fam. Brassicaceae (Crucifereae) 0.3%
Mustard, leaves & stems 8007-40-7 Brassica juncea (L.) Czern. et Coss., fam. Brassicaceae (Crucifereae) 0.5%
Mustard, root 8007-40-7 Brassica juncea (L.) Czern. et Coss., fam. Brassicaceae (Crucifereae) 0.1%
Cornmint (Mentha arvensis) (India) 3 Shivalik 68917-18-0 Mentha arvensis (L.) var. piperascens Malinv., fam. Lamiaceae (Labiatae) 0.08%
Asparagus officinalis (China) stem Asparagus officinalis L., fam. Liliaceae 1.18%
Passion fruit (China) 2 Passiflora edulis Sims var. flavicarpa Dengener, fam. Passifloraceae 0.56%
Hedyotis diffusa (Malaysia) Hedyotis diffusa Willd. (syn. Oldenlandia diffusa Roxb.), fam. Rubiaceae 0.4%
Averrhoa bilimbi fruit (Malaysia) Averrhoa bilimbi L., fam. Oxalidaceae 0.2%
Bouea macrophylla fruit (Malaysia) Bouea macrophylla Grif. (B. gandaria Blume x Miq., fam. Anacardiaceae 0.03%
Zizyphus jujuba fruit (Malaysia) Zizyphus jujuba Mill. var. inermis, fam. Rhamnaceae 0.31%
Acacia confusa flower (China) Acacia confusa Merr., fam. Mimosaceae (Leguminosae) 0.1%
Rose (China) 2 8007-01-7 Rosa damascena Mill., fam. Rosaceae 0.02%
Mentha asiatica (Mongolia) Mentha asiatica Borriss, fam. Lamiaceae (Labiatae) 0.07%
Tamarind 3 fruit Tamarindus indica L., fam. Leguminosae 0.01%
Phaeomeria speciosa Phaeomeria speciosa Koord., (Etlingera elatior (Jack) R.M. Smith), Zingib. 0.01%
Colocasia esculenta (Taro) Colocasia esculenta (L.) Schott, fam. Araceae 0.01%
Psidium cattleianum fruit (R‚union Island) Psidium cattleianum Sabine, fam. Myrtaceae 5.0%
Kewda (India) Pandanus fascicularis Lam., var. fascilarris, fam. Pandanaceae 0.05%
Mullilam leaf (India) Zanthoxylum rhetsa D.C. syn. Z. limonella (Dennst.) Alston, fam. Rutaceae 0.01%
Carob bean extract 1 9000-40-2 Ceratonia siliqua L., fam. Leguminoseae 0.5%
Carob bean powder 2a raw 9000-40-2 Ceratonia siliqua L., fam. Leguminoseae 6.6%
Carob bean powder 2b roasted 9000-40-2 Ceratonia siliqua L., fam. Leguminoseae 0.01%
Truffle, Asian Tuber indicum Cooke et Mass. (T. himalayense Zhang-Minter),fam.Ascomycetae 50.0%
Cordia nitida fruit Cordia nitida Vahl., fam. Borraginaceae 0.9%
Patchouli (China) 3a root 8014-09-3 Pogostemon cablin Benth., fam. Lamiaceae (Labiatae) 0.01%
Pepper, black (India) 6b free volatiles 8006-82-4 Piper nigrum L., fam. Piperaceae 0.1%
Gourd, ridge (Columbia) flower headspace 90063-68-6 Luffa acutangula, fam. Cucurbitaceae 0.05%
Cassie absolute 1a extract 8023-82-3 Acacia farnesiana (L.) Willd., fam. Mimosaceae (Leguminosae) 0.5%
Banana passa headspace extract (Brazil) 89957-82-4 Musa cavendishii cultivar nanica, fam. Musaceae 54.5%
Asafoetida (Pakistan) 2 9000-04-8 Ferula assafoetida L., fam. Apiaceae (Umbelliferae) 0.01%
Mango (Cameroon) headspace of ripe fruit 90063-86-0 Mangifera indica L., fam. Anacardiaceae 0.01%
Papaya (Cameroon) headspace of ripe fruit Carica papaya L., 0.01%