Propane

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  • Identifiers

    CAS number
    74-98-6

    Molecular formula
    C3H8

    SMILES
    CCC

    Safety labels

    Flammable
    Flammable

    Compressed Gas
    Compressed Gas

  • Odor profile

    Ethereal 73.07%
    Gassy 44.96%
    Solvent 43.48%
    Sweet 41.39%
    Alcoholic 35.08%
    Musty 29.0%
    Camphoreous 27.8%
    Fermented 27.79%
    Fresh 27.49%
    Pungent 25.12%

    Scent© AI

    Odor threshold>

    • Odor Threshold Low: 12225.0 [ppm]. Odor Threshold High: 20005.0 [ppm]. Odor threshold from AIHA
    • 5,000-20,000 PPM
    • WATER: 1.0 MG/L; AIR: 16,000 UL/L; ODOR SAFETY CLASS C; C= LESS THAN 50% OF DISTRACTED PERSONS PERCEIVE WARNING OF TLV.
    • Recognition threshold values: 36,000 mg/cu m; 22,000 mg/cu m; odor index at 20 °C= 425
    • Odor threshold 1800 mg/cu m (low), 36000 mg/cu m (high)

  • Properties

    XLogP3-AA
    1.8

    Molecular weight
    44.1 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra fast

    Melting point expt.

    • -305.9 °F (USCG, 1999)
    • -187.6 °C
    • -189.9 °C
    • -189.7 °C
    • -306 °F

    Boiling point

    • -43.8 °F at 760 mmHg (USCG, 1999)
    • -42.1 °C at 1 atm
    • -42 °C
    • -44 °F

    Flash point est.
    -88.76 ˚C

    Flash point expt.

    • -156 °F (gas) (USCG, 1999)
    • -156 °F
    • -156 °F (Closed cup)
    • -104 °C
    • NA (Gas)

    Solubility expt.

    • 0.01 % (NIOSH, 2024)
    • Slightly soluble in acetone; soluble in ethanol; very soluble in ethyl ether, benzene, chloroform
    • 100 vol water dissolve 6.5 vol at 17.8 °C, 753 mm Hg; 100 vol absolute alcohol dissolve 790 vol at 16.6 °C, 754 mm Hg; 100 vol ether dissolve 926 vol at 16.6 °C, 757 mm Hg; 100 vol chloroform dissolve 1299 vol at 21.6 °C, 757 mm Hg; 100 vol benzene dissolve 1452 vol at 21.5 °C, 757 mm Hg; 100 vol turpentine dissolve 1587 vol at 17.7 °C, 757 mm Hg
    • In water, 62.4 ppm at 25 °C
    • 0.0624 mg/mL at 25 °C
    • Solubility in water, g/100ml at 20 °C: 0.007
    • 0.01%

  • Synonyms

    • PROPANE
    • n-Propane
    • Dimethylmethane
    • 74-98-6
    • Propyl hydride
    • propan
    • Propyldihydride
    • Propane liquefied
    • A-108
    • Praseodymium doped ceria
    • Purifrigor p 3.5
    • HC 290
    • HSDB 1672
    • R 290
    • EINECS 200-827-9
    • CH3-CH2-CH3
    • INS NO.944
    • E944
    • UNII-T75W9911L6
    • CHEBI:32879
    • INS-944
    • T75W9911L6
    • 130071-47-5
    • cerium oxide, praseodymium doped
    • DTXSID5026386
    • E-944
    • EC 200-827-9
    • PROPANE (II)
    • PROPANE [II]
    • PROPANE (MART.)
    • PROPANE [MART.]
    • Bottled gas
    • dimethyl methane
    • Propane [USAN:NF]
    • UN1978
    • C3H8
    • n-Propane-
    • Propane (NF)
    • Praseodymium Nanofoil
    • Propane, 98%
    • Freon 290
    • PROPANE [VANDF]
    • PROPANE [HSDB]
    • PROPANE [FCC]
    • PROPANE [MI]
    • Propane, 99.97%
    • PROPANE [WHO-DD]
    • LPG (liquefied petroleum gas)
    • CHEMBL135416
    • DTXCID006386
    • QSPL 135
    • Ultra Thin Praseodymium Nanofoil
    • DTXSID60174094
    • IPZJQDSFZGZEOY-UHFFFAOYSA-N
    • AKOS009159189
    • UN 1978
    • Propane, 99.95%, Messer(R) CANGas
    • NS00005747
    • InChI=1/C3H8/c1-3-2/h3H2,1-2H
    • C20783
    • D05625
    • Q131189
    • 1DDB43B7-5E0D-48E4-8F15-3D3D5116098A
    • 200-827-9

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 259.45
    methanol 190.23
    isopropanol 224.61
    water 0.09
    ethyl acetate 172.07
    n-propanol 264.02
    acetone 222.46
    n-butanol 321.15
    acetonitrile 105.25
    DMF 150.11
    toluene 105.36
    isobutanol 197.43
    1,4-dioxane 265.9
    methyl acetate 129.65
    THF 624.62
    2-butanone 190.87
    n-pentanol 162.9
    sec-butanol 236.28
    n-hexane 290.59
    ethylene glycol 47.12
    NMP 213.86
    cyclohexane 362.44
    DMSO 204.18
    n-butyl acetate 454.98
    n-octanol 162.16
    chloroform 406.36
    n-propyl acetate 134.59
    acetic acid 211.23
    dichloromethane 289.0
    cyclohexanone 340.94
    propylene glycol 91.37
    isopropyl acetate 114.33
    DMAc 104.58
    2-ethoxyethanol 116.07
    isopentanol 236.33
    n-heptane 640.2
    ethyl formate 94.6
    1,2-dichloroethane 193.71
    n-hexanol 511.29
    2-methoxyethanol 222.93
    isobutyl acetate 95.21
    tetrachloromethane 150.67
    n-pentyl acetate 131.31
    transcutol 340.36
    n-heptanol 189.48
    ethylbenzene 60.11
    MIBK 106.65
    2-propoxyethanol 361.88
    tert-butanol 290.98
    MTBE 210.86
    2-butoxyethanol 182.94
    propionic acid 169.9
    o-xylene 60.72
    formic acid 34.37
    diethyl ether 265.21
    m-xylene 68.2
    p-xylene 73.89
    chlorobenzene 125.16
    dimethyl carbonate 38.81
    n-octane 120.96
    formamide 34.65
    cyclopentanone 384.5
    2-pentanone 195.61
    anisole 80.88
    cyclopentyl methyl ether 321.05
    gamma-butyrolactone 309.24
    1-methoxy-2-propanol 191.41
    pyridine 219.37
    3-pentanone 148.66
    furfural 207.77
    n-dodecane 58.26
    diethylene glycol 162.53
    diisopropyl ether 101.71
    tert-amyl alcohol 248.36
    acetylacetone 140.51
    n-hexadecane 63.18
    acetophenone 65.6
    methyl propionate 125.42
    isopentyl acetate 304.77
    trichloroethylene 284.63
    n-nonanol 147.87
    cyclohexanol 304.43
    benzyl alcohol 63.45
    2-ethylhexanol 403.45
    isooctanol 143.23
    dipropyl ether 593.99
    1,2-dichlorobenzene 99.44
    ethyl lactate 58.41
    propylene carbonate 183.16
    n-methylformamide 79.3
    2-pentanol 238.85
    n-pentane 254.22
    1-propoxy-2-propanol 427.79
    1-methoxy-2-propyl acetate 197.11
    2-(2-methoxypropoxy) propanol 132.6
    mesitylene 50.48
    ε-caprolactone 243.48
    p-cymene 114.85
    epichlorohydrin 238.71
    1,1,1-trichloroethane 251.95
    2-aminoethanol 103.37
    morpholine-4-carbaldehyde 167.23
    sulfolane 350.45
    2,2,4-trimethylpentane 75.95
    2-methyltetrahydrofuran 451.47
    n-hexyl acetate 176.9
    isooctane 65.81
    2-(2-butoxyethoxy)ethanol 193.5
    sec-butyl acetate 84.42
    tert-butyl acetate 130.23
    decalin 88.81
    glycerin 97.65
    diglyme 270.55
    acrylic acid 120.08
    isopropyl myristate 102.78
    n-butyric acid 296.79
    acetyl acetate 98.44
    di(2-ethylhexyl) phthalate 69.78
    ethyl propionate 107.22
    nitromethane 140.79
    1,2-diethoxyethane 230.25
    benzonitrile 95.53
    trioctyl phosphate 70.34
    1-bromopropane 288.69
    gamma-valerolactone 279.47
    n-decanol 118.55
    triethyl phosphate 92.22
    4-methyl-2-pentanol 116.37
    propionitrile 146.12
    vinylene carbonate 126.4
    1,1,2-trichlorotrifluoroethane 202.05
    DMS 80.76
    cumene 46.44
    2-octanol 120.81
    2-hexanone 160.09
    octyl acetate 124.04
    limonene 250.36
    1,2-dimethoxyethane 196.82
    ethyl orthosilicate 105.68
    tributyl phosphate 89.43
    diacetone alcohol 139.16
    N,N-dimethylaniline 61.29
    acrylonitrile 117.77
    aniline 110.03
    1,3-propanediol 157.66
    bromobenzene 132.74
    dibromomethane 300.41
    1,1,2,2-tetrachloroethane 277.94
    2-methyl-cyclohexyl acetate 168.92
    tetrabutyl urea 109.4
    diisobutyl methanol 211.12
    2-phenylethanol 129.49
    styrene 74.11
    dioctyl adipate 116.62
    dimethyl sulfate 47.6
    ethyl butyrate 257.84
    methyl lactate 65.09
    butyl lactate 110.11
    diethyl carbonate 130.05
    propanediol butyl ether 140.68
    triethyl orthoformate 183.42
    p-tert-butyltoluene 119.37
    methyl 4-tert-butylbenzoate 97.9
    morpholine 324.77
    tert-butylamine 264.69
    n-dodecanol 101.6
    dimethoxymethane 120.24
    ethylene carbonate 119.24
    cyrene 80.27
    2-ethoxyethyl acetate 105.18
    2-ethylhexyl acetate 272.26
    1,2,4-trichlorobenzene 114.4
    4-methylpyridine 171.75
    dibutyl ether 295.39
    2,6-dimethyl-4-heptanol 211.12
    DEF 157.8
    dimethyl isosorbide 197.41
    tetrachloroethylene 212.57
    eugenol 93.74
    triacetin 106.8
    span 80 210.02
    1,4-butanediol 56.81
    1,1-dichloroethane 229.26
    2-methyl-1-pentanol 128.84
    methyl formate 57.4
    2-methyl-1-butanol 222.22
    n-decane 101.37
    butyronitrile 206.0
    3,7-dimethyl-1-octanol 176.84
    1-chlorooctane 160.8
    1-chlorotetradecane 73.27
    n-nonane 120.2
    undecane 73.66
    tert-butylcyclohexane 88.2
    cyclooctane 141.66
    cyclopentanol 323.27
    tetrahydropyran 485.6
    tert-amyl methyl ether 174.14
    2,5,8-trioxanonane 199.48
    1-hexene 338.79
    2-isopropoxyethanol 90.73
    2,2,2-trifluoroethanol 47.77
    methyl butyrate 145.7

    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